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* [Bug lto/81847] New: ICE with LTO enabled
@ 2017-08-15 21:18 v at vsamko dot com
2021-11-21 1:04 ` [Bug lto/81847] " pinskia at gcc dot gnu.org
2021-12-07 7:27 ` rguenth at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: v at vsamko dot com @ 2017-08-15 21:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81847
Bug ID: 81847
Summary: ICE with LTO enabled
Product: gcc
Version: 7.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: v at vsamko dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
I'm getting ICE with LTO in add_symbol_to_partition_1 when performing LTO on a
static library. ICE call stack is below.
Unfortunately I can not provide a test case as this only happens when I compile
a rather large proprietary application. When I try to reduce it to a simple
test case, the error becomes non deterministic (e.g. adding an empty .cpp file
sometimes triggers or stops triggering ICE).
If I disable lto partitioning (-flto-partition=none) I don't get ICE any more.
Are there any downsides of disabling LTO partitioning?
I can reproduce this problem with 7.1.0 and 7.2.0, and also with
https://github.com/gcc-mirror/gcc/commit/8388d80a5e86797b3c0822baf6d41c02fa8b41dd
patch applied to 7.2.0 .
If I instrument lto-partition.c:203 to print "node1" just before the assertion
(when it doesn't get added), I get "*.LTHUNK8" and "*.LTHUNK9" printed out a
number of times.
The command line that triggers this ICE is:
g++ -O3 -DNDEBUG -Wl,r file1.o file2.o -o merged.o -nostdlib
Is there any other instrumentation of investigation I can do on my side to help
identify the root of this ICE?
Valentine
--
lto1: internal compiler error: in add_symbol_to_partition_1, at
lto/lto-partition.c:203
0x13101d7 add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:203
0x130fa73 add_references_to_partition
../../gcc-7.2.0/gcc/lto/lto-partition.c:93
0x130fbff add_references_to_partition
../../gcc-7.2.0/gcc/lto/lto-partition.c:106
0x130fede add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:176
0x130ffeb add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:163
0x130fa73 add_references_to_partition
../../gcc-7.2.0/gcc/lto/lto-partition.c:93
0x130fede add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:176
0x130fa73 add_references_to_partition
../../gcc-7.2.0/gcc/lto/lto-partition.c:93
0x130fede add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:176
0x130ffda add_symbol_to_partition_1
../../gcc-7.2.0/gcc/lto/lto-partition.c:161
0x13111a9 lto_balanced_map(int, int)
../../gcc-7.2.0/gcc/lto/lto-partition.c:550
0x1309947 do_whole_program_analysis
../../gcc-7.2.0/gcc/lto/lto.c:3125
0x1309947 lto_main()
../../gcc-7.2.0/gcc/lto/lto.c:3320
>From gcc-bugs-return-572163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 16:54:26 2017
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/81847] ICE with LTO enabled
Date: Tue, 15 Aug 2017 21:21:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Try -flto-partition=one which might allow this to be reduced further.
>From gcc-bugs-return-572164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 17:03:24 2017
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From: "v at vsamko dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/81847] ICE with LTO enabled
Date: Tue, 15 Aug 2017 21:23:00 -0000
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--- Comment #2 from Valentine <v at vsamko dot com> ---
(In reply to Andrew Pinski from comment #1)
> Try -flto-partition=one which might allow this to be reduced further.
Thanks, just tried -flto-partition=one, still the same ICE. Other
-flto-partition options didn't help either, the only thing that fixes this ICE
for me is the "none" option.
>From gcc-bugs-return-572165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 17:06:54 2017
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/81847] ICE with LTO enabled
Date: Tue, 15 Aug 2017 22:23:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Valentine from comment #2)
> (In reply to Andrew Pinski from comment #1)
> > Try -flto-partition=one which might allow this to be reduced further.
>
> Thanks, just tried -flto-partition=one, still the same ICE. Other
> -flto-partition options didn't help either, the only thing that fixes this
> ICE for me is the "none" option.
Right, the whole point of my saying:
>Try -flto-partition=one which might allow this to be reduced further.
Was that the deterministic of the ICE becomes very deterministic now and that
even adding another .cpp file, it will still crash :).
See https://gcc.gnu.org/wiki/A_guide_to_testcase_reduction#Reducing_LTO_bugs
for other tricks of reducing the testcase to something which you can provide.
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--- Comment #16 from Vincent <vincent.lextrait at gmail dot com> ---
Still there in 7.2.0.
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Subject: [Bug libquadmath/81848] New: Add PowerPC support to libquadmath
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81848
Bug ID: 81848
Summary: Add PowerPC support to libquadmath
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: libquadmath
Assignee: meissner at gcc dot gnu.org
Reporter: meissner at gcc dot gnu.org
CC: dje at gcc dot gnu.org, jsm28 at gcc dot gnu.org,
meissner at gcc dot gnu.org, segher at gcc dot gnu.org,
wschmidt at gcc dot gnu.org
Target Milestone: ---
CC: dje at gcc dot gnu.org, jsm28 at gcc dot gnu.org,
meissner at gcc dot gnu.org, segher at gcc dot gnu.org,
wschmidt at gcc dot gnu.org
Assignee: meissner at gcc dot gnu.org
Libquadmath needs just a few fixes in order to be built once PowerPC GCC
enables __float128 by default:
1) The configure script and quadmath.h need minor changes to allow declaring
__float128 complex on PowerPC (because TF/TC were already taken, we need to use
KC for the __float128 complex type).
2) math/cbrtq.c and math/j0q.c have constants declared long double, when the
constant should have declared __float128. On the PowerPC, due to GCC internal
issues, it was problematical if you combined long double and __float128 in the
same expression, so the compiler gives an error.
3) math/sqrtq.c calls sqrtl for the initial approximation. I have some changes
that allow the PowerPC to compile this file.
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |wilco at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #8 from Wilco <wilco at gcc dot gnu.org> ---
Fixed
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Subject: [Bug libquadmath/81848] New: Add PowerPC support to libquadmath
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81848
Bug ID: 81848
Summary: Add PowerPC support to libquadmath
Product: gcc
Version: 8.0
Status: ASSIGNED
Severity: enhancement
Priority: P3
Component: libquadmath
Assignee: meissner at gcc dot gnu.org
Reporter: meissner at gcc dot gnu.org
CC: dje at gcc dot gnu.org, jsm28 at gcc dot gnu.org,
meissner at gcc dot gnu.org, segher at gcc dot gnu.org,
wschmidt at gcc dot gnu.org
Target Milestone: ---
CC: dje at gcc dot gnu.org, jsm28 at gcc dot gnu.org,
meissner at gcc dot gnu.org, segher at gcc dot gnu.org,
wschmidt at gcc dot gnu.org
Assignee: meissner at gcc dot gnu.org
Status: ASSIGNED
Last reconfirmed: 2017-08-15
Ever confirmed: 1
Libquadmath needs just a few fixes in order to be built once PowerPC GCC
enables __float128 by default:
1) The configure script and quadmath.h need minor changes to allow declaring
__float128 complex on PowerPC (because TF/TC were already taken, we need to use
KC for the __float128 complex type).
2) math/cbrtq.c and math/j0q.c have constants declared long double, when the
constant should have declared __float128. On the PowerPC, due to GCC internal
issues, it was problematical if you combined long double and __float128 in the
same expression, so the compiler gives an error.
3) math/sqrtq.c calls sqrtl for the initial approximation. I have some changes
that allow the PowerPC to compile this file.
>From gcc-bugs-return-572170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 18:57:19 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/81849] New: Size of automatic array argument specified by host-assosiated variable.
Date: Tue, 15 Aug 2017 23:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81849
Bug ID: 81849
Summary: Size of automatic array argument specified by
host-assosiated variable.
Product: gcc
Version: 7.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: nospam2x at iae dot nl
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Following program is rejected by gfortran, not by lf95 or by g95.
program p
implicit none
integer :: n=3
print *, f()
contains
function f() result(R)
real :: R(n)
R = 7
end function
end program
This program should be accepted (see discussion in comp.lang.fortran in thread
"Size of result array error"). But gfortran reports:
!> gfortran s.f90
s.f90:7.17:
real :: R(n)
1
Error: Variable 'n' cannot appear in the expression at (1)
>From gcc-bugs-return-572171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 19:45:04 2017
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Subject: [Bug web/81846] ViewVC Exception
Date: Tue, 15 Aug 2017 23:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81846
Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
All the missing or corrupted revprops files from last night's filesystem
problems have now been restored from backup.
>From gcc-bugs-return-572172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 20:40:35 2017
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From: "daniel.santos at pobox dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/81850] New: [mingw/cygwin] -mabi=sysv ignored
Date: Tue, 15 Aug 2017 23:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81850
Bug ID: 81850
Summary: [mingw/cygwin] -mabi=sysv ignored
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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In ix86_option_override_internal (i386.c), we check to see if
opts_set->x_ix86_abi is uninitialized by seeing if it's zero:
if (!opts_set->x_ix86_abi)
opts->x_ix86_abi = DEFAULT_ABI;
But zero is a valid enum value (i386-opt.h):
/* Available call abi. */
enum calling_abi
{
SYSV_ABI = 0,
MS_ABI = 1
};
>From gcc-bugs-return-572173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 20:54:39 2017
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/81851] New: missing -Wduplicated-branches on if and return statements with no else
Date: Tue, 15 Aug 2017 23:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81851
Bug ID: 81851
Summary: missing -Wduplicated-branches on if and return
statements with no else
Product: gcc
Version: 8.0
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The -Wduplicated-branches warning triggers when the true statement and the
false statement in an if statement are the same, including when both are a
return statement. But the warning doesn't trigger for the equivalent code with
the else statement, even though it's very common to leave out the else part
when the block controlled by the if statement ends in a return.
This could be viewed more as an enhancement request than a bug since the
documentation doesn't suggest a warning in the latter case should be expected,
but since such code is pervasive I'd be more inclined to see it as a bug.
Either way, handling this case would make the warning obviously even more
useful than it already is.
$ cat b.c && gcc -O2 -S -Wduplicated-branches b.c
int f (int i)
{
if (i == 0) // -Wduplicated-branches (good)
return 0;
else
return 0;
}
int g (int i)
{
if (i == 0) // no warning
return 0;
return 0;
}
b.c: In function ‘f’:
b.c:3:6: warning: this condition has identical branches [-Wduplicated-branches]
if (i == 0) // -Wduplicated-branches (good)
^
>From gcc-bugs-return-572174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 21:10:59 2017
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81852] New: Feature request: __cpp_threadsafe_static_init
Date: Tue, 15 Aug 2017 23:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81852
Bug ID: 81852
Summary: Feature request: __cpp_threadsafe_static_init
Product: gcc
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Since the recent update of "Feature-testing recommendations for C++",
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0096r4.html#recs.cpp11
the feature macro "__cpp_threadsafe_static_init" has been recommended for C++
language level c++11 on. This is extremely useful to have for code that has to
program defensively against the possibility that thread-safe static locale
initialization has been deactivated (via -fno-threadsafe-statics). With that
feature macro available, portable code can be written that always provides a
thread-safe static initialization, for example by means of std::call_once as
the following excerpt demonstrates:
Thingy& get_thing()
{
#ifndef __cpp_threadsafe_static_init
[...]
static std::once_flag flag;
std::call_once(flag, init::get);
return init::get();
#else
static Thingy result;
return result;
#endif
}
Current clang HEAD 6.0.0 (https://github.com/llvm-mirror/clang.git 43) has
already provided support for this.
A test-case would be that given the compiler flags
$ g++ prog.cc -Wall -Wextra -std=c++11 -pedantic
the following would be well-formed:
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
#ifndef __cpp_threadsafe_static_init
# error "__cpp_threadsafe_static_init not defined"
#endif
int main()
{
}
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
while given the compiler flags
$ g++ prog.cc -Wall -Wextra -std=c++11 -pedantic "-fno-threadsafe-statics"
the same code should be ill-formed:
prog.cc:2:3: error: #error "__cpp_threadsafe_static_init not defined"
# error "__cpp_threadsafe_static_init not defined"
^~~~~
>From gcc-bugs-return-572175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 21:19:22 2017
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From: "t.poechtrager at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81853] New: [C++14] "using namespace" is not a constant expression in function-like macro
Date: Wed, 16 Aug 2017 04:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81853
Bug ID: 81853
Summary: [C++14] "using namespace" is not a constant expression
in function-like macro
Product: gcc
Version: 7.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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$ g++ --version
g++ (GCC) 7.1.1 20170630
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
---------------------------------------------------------------------------
$ cat test.cpp
namespace test {
constexpr int test_fun() { return 42; }
}
#define test_macro() \
({ \
using namespace test; \
test_fun(); \
})
int main()
{
constexpr int test_var = test_macro();
return test_var;
}
---------------------------------------------------------------------------
$ g++ test.cpp
test.cpp: In function ‘int main()’:
test.cpp:8:19: error: statement is not a constant expression
using namespace test; \
^
test.cpp:14:30: note: in expansion of macro ‘test_macro’
constexpr int test_var = test_macro();
^~~~~~~~~~
---------------------------------------------------------------------------
Clang accepts this since 3.4:
$ clang++ test.cpp -std=c++14 && ./a.out ; echo $?
42
>From gcc-bugs-return-572176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 21:21:54 2017
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From: "jsm28 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78459] [7/8 Regression] [SH] ICE in maybe_record_trace_start building glibc string tests
Date: Wed, 16 Aug 2017 04:40:00 -0000
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--- Comment #4 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
At some point this ICE disappeared, both on mainline and GCC 7 branch. I
haven't bisected to see when it disappeared (quite possibly before the
branchpoint).
>From gcc-bugs-return-572178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 22:23:32 2017
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/81854] New: weak alias of an incompatible symbol accepted
Date: Wed, 16 Aug 2017 07:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81854
Bug ID: 81854
Summary: weak alias of an incompatible symbol accepted
Product: gcc
Version: 8.0
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GCC helpfully rejects function declarations that alias a variable but fails to
complain about similarly incorrect declarations that alias functions with an
incompatible type.
$ cat b.c && gcc -O2 -Wall -Wextra -Wpedantic b.c
const char* __attribute__ ((weak, alias ("foo")))
bar (void); // error (good)
int foo;
const char* __attribute__ ((weak, alias ("foobar")))
baz (void); // accepted (bad)
void foobar (int *p) { *p = 0; }
b.c:2:1: error: ‘bar’ alias in between function and variable is not supported
bar (void); // error (good)
^~~
b.c:4:5: warning: ‘foo’ aliased declaration
int foo;
^~~
>From gcc-bugs-return-572177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 21:23:18 2017
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/81851] missing -Wduplicated-branches on if and return statements with no else
Date: Wed, 16 Aug 2017 07:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81851
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Definitely not a bug, I never intended that the warning detects the latter
case. And it's not an easy enhancement, either.
>From gcc-bugs-return-572184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 23:51:59 2017
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Subject: [Bug target/67712] [SH] __builtin_strncmp causes code bloat
Date: Wed, 16 Aug 2017 07:34:00 -0000
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--- Comment #2 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Tue Aug 15 23:43:11 2017
New Revision: 251109
URL: https://gcc.gnu.org/viewcvs?rev=251109&root=gcc&view=rev
Log:
Limit SH strncmp inline expansion (PR target/78460).
GCC mainline built for sh4-linux-gnu runs out of memory building a
glibc test, which calls strncmp with very large constant size
argument, resulting in the SH inline strncmp expansion trying to
inline a fully unrolled expansion of strncmp for that size.
This patch limits that fully unrolled expansion to the case of less
than 32 bytes. This is explicitly *not* trying to be optimal in any
way (very likely a lower threshold makes sense), just to limit enough
to avoid the out-of-memory issue in the glibc testsuite.
I have *not* run the GCC testsuite for SH. I have verified that this
allows the glibc testsuite to build OK, with both GCC mainline and GCC
7 branch (and that the included test builds quickly with patched GCC,
runs out of memory with unpatched GCC).
PR target/78460
PR target/67712
gcc:
* config/sh/sh-mem.cc (sh_expand_cmpnstr): Only unroll for
constant count if that count is less than 32.
gcc/testsuite:
* gcc.c-torture/compile/string-large-1.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/compile/string-large-1.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/sh/sh-mem.cc
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 23:51:12 2017
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Subject: [Bug target/78460] [7/8 Regression] [SH] OOM building glibc string tst-cmp.c
Date: Wed, 16 Aug 2017 07:34:00 -0000
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--- Comment #7 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Tue Aug 15 23:43:11 2017
New Revision: 251109
URL: https://gcc.gnu.org/viewcvs?rev=251109&root=gcc&view=rev
Log:
Limit SH strncmp inline expansion (PR target/78460).
GCC mainline built for sh4-linux-gnu runs out of memory building a
glibc test, which calls strncmp with very large constant size
argument, resulting in the SH inline strncmp expansion trying to
inline a fully unrolled expansion of strncmp for that size.
This patch limits that fully unrolled expansion to the case of less
than 32 bytes. This is explicitly *not* trying to be optimal in any
way (very likely a lower threshold makes sense), just to limit enough
to avoid the out-of-memory issue in the glibc testsuite.
I have *not* run the GCC testsuite for SH. I have verified that this
allows the glibc testsuite to build OK, with both GCC mainline and GCC
7 branch (and that the included test builds quickly with patched GCC,
runs out of memory with unpatched GCC).
PR target/78460
PR target/67712
gcc:
* config/sh/sh-mem.cc (sh_expand_cmpnstr): Only unroll for
constant count if that count is less than 32.
gcc/testsuite:
* gcc.c-torture/compile/string-large-1.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/compile/string-large-1.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/sh/sh-mem.cc
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 23:52:16 2017
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Subject: [Bug target/67712] [SH] __builtin_strncmp causes code bloat
Date: Wed, 16 Aug 2017 07:34:00 -0000
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--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
The patch committed limits the unrolling, but not necessarily as much as
desirable (given the bug is about an 8-byte case and the limit is 32 bytes).
>From gcc-bugs-return-572179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 22:27:48 2017
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/81854] weak alias of an incompatible symbol accepted
Date: Wed, 16 Aug 2017 07:34:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The following (otherwise untested) patch detects the problem in the test case.
diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c
index 6072c56..635170a 100644
--- a/gcc/cgraphunit.c
+++ b/gcc/cgraphunit.c
@@ -1350,11 +1350,24 @@ handle_alias_pairs (void)
if (TREE_CODE (p->decl) == FUNCTION_DECL
&& target_node && is_a <cgraph_node *> (target_node))
{
- cgraph_node *src_node = cgraph_node::get (p->decl);
- if (src_node && src_node->definition)
- src_node->reset ();
- cgraph_node::create_alias (p->decl, target_node->decl);
- alias_pairs->unordered_remove (i);
+ tree t1 = TREE_TYPE (p->decl);
+ tree t2 = TREE_TYPE (target_node->decl);
+ if (!gimple_canonical_types_compatible_p (t1, t2, false))
+ {
+ error ("%q+D alias between functions of incompatible types",
+ p->decl);
+ warning (0, "%q+D aliased declaration",
+ target_node->decl);
+ alias_pairs->unordered_remove (i);
+ }
+ else
+ {
+ cgraph_node *src_node = cgraph_node::get (p->decl);
+ if (src_node && src_node->definition)
+ src_node->reset ();
+ cgraph_node::create_alias (p->decl, target_node->decl);
+ alias_pairs->unordered_remove (i);
+ }
}
else if (VAR_P (p->decl)
&& target_node && is_a <varpool_node *> (target_node))
>From gcc-bugs-return-572182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 23:43:55 2017
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Subject: [Bug target/67712] [SH] __builtin_strncmp causes code bloat
Date: Wed, 16 Aug 2017 07:34:00 -0000
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--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Tue Aug 15 23:42:23 2017
New Revision: 251108
URL: https://gcc.gnu.org/viewcvs?rev=251108&root=gcc&view=rev
Log:
Limit SH strncmp inline expansion (PR target/78460).
GCC mainline built for sh4-linux-gnu runs out of memory building a
glibc test, which calls strncmp with very large constant size
argument, resulting in the SH inline strncmp expansion trying to
inline a fully unrolled expansion of strncmp for that size.
This patch limits that fully unrolled expansion to the case of less
than 32 bytes. This is explicitly *not* trying to be optimal in any
way (very likely a lower threshold makes sense), just to limit enough
to avoid the out-of-memory issue in the glibc testsuite.
I have *not* run the GCC testsuite for SH. I have verified that this
allows the glibc testsuite to build OK, with both GCC mainline and GCC
7 branch (and that the included test builds quickly with patched GCC,
runs out of memory with unpatched GCC).
PR target/78460
PR target/67712
gcc:
* config/sh/sh-mem.cc (sh_expand_cmpnstr): Only unroll for
constant count if that count is less than 32.
gcc/testsuite:
* gcc.c-torture/compile/string-large-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/string-large-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sh/sh-mem.cc
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 22:34:13 2017
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/81824] Warn for missing attributes with function aliases
Date: Wed, 16 Aug 2017 07:34:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=81854
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The challenge here is that the alias target may not be in scope at the point of
the alias declaration, so while the test case in comment #0 could be detected
by enhancing the handle_alias_attribute function in c-family/c-attribs.c, one
where the declaration order is reversed as in the following could not be:
void foo (void) __attribute__ ((nothrow, weak, alias ("__foo")));
void __foo (void) { }
Bug 81854 suggests that there is a way to detect this in handle_alias_pairs()
in cgraphunit.c.
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Subject: [Bug target/78460] [7/8 Regression] [SH] OOM building glibc string tst-cmp.c
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--- Comment #6 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Tue Aug 15 23:42:23 2017
New Revision: 251108
URL: https://gcc.gnu.org/viewcvs?rev=251108&root=gcc&view=rev
Log:
Limit SH strncmp inline expansion (PR target/78460).
GCC mainline built for sh4-linux-gnu runs out of memory building a
glibc test, which calls strncmp with very large constant size
argument, resulting in the SH inline strncmp expansion trying to
inline a fully unrolled expansion of strncmp for that size.
This patch limits that fully unrolled expansion to the case of less
than 32 bytes. This is explicitly *not* trying to be optimal in any
way (very likely a lower threshold makes sense), just to limit enough
to avoid the out-of-memory issue in the glibc testsuite.
I have *not* run the GCC testsuite for SH. I have verified that this
allows the glibc testsuite to build OK, with both GCC mainline and GCC
7 branch (and that the included test builds quickly with patched GCC,
runs out of memory with unpatched GCC).
PR target/78460
PR target/67712
gcc:
* config/sh/sh-mem.cc (sh_expand_cmpnstr): Only unroll for
constant count if that count is less than 32.
gcc/testsuite:
* gcc.c-torture/compile/string-large-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/string-large-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sh/sh-mem.cc
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/79483] [7 Regression] [graphite] ICE: verify_ssa failed (error: definition in block 31 does not dominate use in block 28)
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Subject: [Bug fortran/80965] [7/8 Regression] ICE with class argument and -O2 optimization
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Subject: [Bug target/68256] Defining TARGET_USE_CONSTANT_BLOCKS_P causes go bootstrap failure on aarch64.
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Subject: [Bug tree-optimization/79534] [7/8 Regression] tree-ifcombine aarch64 performance regression with trunk@245151
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Subject: [Bug libfortran/79540] [7/8 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
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Subject: [Bug middle-end/81818] aarch64 uses 2-3x memory and 2x time of arm at -Os, -O2, -O3
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looking for memory leaks in the backend might be interesting. Note you can
build GCC with --enable-gather-detailed-mem-stats and use -fmem-report to get
an idea where memory is allocated (and freed).
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Subject: [Bug target/67712] [SH] __builtin_strncmp causes code bloat
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--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
The patch committed limits the unrolling, but not necessarily as much as
desirable (given the bug is about an 8-byte case and the limit is 32 bytes).
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Subject: [Bug c++/81843] New: ICE on valid C++11 code with variadic templates: in tsubst_pack_expansion, at cp/pt.c:11524
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Bug ID: 81843
Summary: ICE on valid C++11 code with variadic templates: in
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$ g++-trunk -v
Using built-in specs.
COLLECT_GCC=g++-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 8.0.0 20170814 (experimental) [trunk revision 251096] (GCC)
$
$ g++-6.2 -c -std=c++11 small.cpp
$ clang++-4.0.0 -c -std=c++11 small.cpp
$ icc -c -std=c++11 small.cpp
$
$ g++-trunk -c -std=c++11 small.cpp
small.cpp: In instantiation of ‘struct C<>::D<A<B<int, int> > >’:
small.cpp:9:34: required from here
small.cpp:5:34: internal compiler error: in tsubst_pack_expansion, at
cp/pt.c:11524
template < typename > struct D {};
^
0x863095 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
../../gcc-source-trunk/gcc/cp/pt.c:11524
0x863a1a tsubst_template_args
../../gcc-source-trunk/gcc/cp/pt.c:11749
0x8638b1 tsubst_template_args
../../gcc-source-trunk/gcc/cp/pt.c:11768
0x864064 tsubst_aggr_type
../../gcc-source-trunk/gcc/cp/pt.c:11981
0x864195 tsubst_aggr_type
../../gcc-source-trunk/gcc/cp/pt.c:11965
0x85d9cd tsubst_decl
../../gcc-source-trunk/gcc/cp/pt.c:12809
0x865f56 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc-source-trunk/gcc/cp/pt.c:13389
0x893aa6 instantiate_class_template_1
../../gcc-source-trunk/gcc/cp/pt.c:10608
0x893aa6 instantiate_class_template(tree_node*)
../../gcc-source-trunk/gcc/cp/pt.c:10892
0x8ee9a2 complete_type(tree_node*)
../../gcc-source-trunk/gcc/cp/typeck.c:136
0x7375c7 start_decl_1(tree_node*, bool)
../../gcc-source-trunk/gcc/cp/decl.c:5128
0x75e228 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc-source-trunk/gcc/cp/decl.c:5091
0x81ef30 cp_parser_init_declarator
../../gcc-source-trunk/gcc/cp/parser.c:19543
0x821d6f cp_parser_simple_declaration
../../gcc-source-trunk/gcc/cp/parser.c:13059
0x822c3a cp_parser_block_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12877
0x82af34 cp_parser_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12774
0x829936 cp_parser_declaration_seq_opt
../../gcc-source-trunk/gcc/cp/parser.c:12650
0x829c54 cp_parser_translation_unit
../../gcc-source-trunk/gcc/cp/parser.c:4387
0x829c54 c_parse_file()
../../gcc-source-trunk/gcc/cp/parser.c:38894
0x971f55 c_common_parse_file()
../../gcc-source-trunk/gcc/c-family/c-opts.c:1106
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$
-----------------------------------------------------------------
template < typename > struct A;
template < typename, typename > struct B;
template < typename ... S > struct C
{
template < typename > struct D {};
template < typename ... T > struct D < A < B < S, T > ... > >;
};
C <>::D < A < B < int, int > > > c;
>From gcc-bugs-return-572192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 07:31:33 2017
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Subject: [Bug target/81819] [7 Regression][RX] internal compiler error: in rx_is_restricted_memory_address, at config/rx/rx.c:311
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-572189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 04:40:01 2017
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From: "lanxingcan at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81855] [mingw-w64] dllexport-ed explicit template instantiation has no symbol in DLL when the compile unit has non-template symbol
Date: Wed, 16 Aug 2017 07:35:00 -0000
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--- Comment #1 from Xingcan Lan <lanxingcan at gmail dot com> ---
Update:
Even if I seperate the them into two compile unit. and link them into one DLL
together, symbols for `Template<void>` is also missing.
So maybe it's a bug of binutils?
>From gcc-bugs-return-572188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 04:30:03 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81855] New: [mingw-w64] dllexport-ed explicit template instantiation has no symbol in DLL when the compile unit has non-template symbol
Date: Wed, 16 Aug 2017 07:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81855
Bug ID: 81855
Summary: [mingw-w64] dllexport-ed explicit template
instantiation has no symbol in DLL when the compile
unit has non-template symbol
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lanxingcan at gmail dot com
Target Milestone: ---
I'm cross building a library for Windows, but encounterd an issue about
dllexport and explicit template instantiation.
I tested with MinGW-W64 GCC/7.1.0 cross compiler on either macOS serria (from
homebrew/core/mingw-w64) as well as Fedora 26 (from stock repository).
Here is a small reproducible.
test.cpp:
```cpp
template<typename T>
struct __declspec(dllexport) Template
{
~Template() noexcept(false) { throw 1; }
};
extern template struct __declspec(dllexport) Template<void>;
template struct Template<void>;
#ifdef WITH_NON_TEMPLATE
struct __declspec(dllexport) NonTemplate
{
~NonTemplate();
};
NonTemplate::~NonTemplate() = default;
#endif
```
Compiles with:
x86_64-w64-mingw32-g++ test.cpp -shared -o libtest1.dll
-Wl,--out-implib,libtest1.dll.a
x86_64-w64-mingw32-g++ test.cpp -DWITH_NON_TEMPLATE -shared -o libtest2.dll
-Wl,--out-implib,libtest2.dll.a
Check exported symbol in libtest1.dll :
```
$ x86_64-w64-mingw32-objdump -d libtest1.dll.a | x86_64-w64-mingw32-c++filt
In archive libtest1.dll.a:
d000005.o: file format pe-x86-64
d000002.o: file format pe-x86-64
d000004.o: file format pe-x86-64
Disassembly of section .text:
0000000000000000 <Template<void>::~Template()>:
0: ff 25 00 00 00 00 jmpq *0x0(%rip) # 6
<Template<void>::~Template()+0x6>
6: 90 nop
7: 90 nop
d000003.o: file format pe-x86-64
Disassembly of section .text:
0000000000000000 <Template<void>::~Template()>:
0: ff 25 00 00 00 00 jmpq *0x0(%rip) # 6
<Template<void>::~Template()+0x6>
6: 90 nop
7: 90 nop
```
Check exported symbol in libtest2.dll:
```
$ x86_64-w64-mingw32-objdump -d libtest2.dll.a | x86_64-w64-mingw32-c++filt
In archive libtest2.dll.a:
d000005.o: file format pe-x86-64
d000002.o: file format pe-x86-64
d000004.o: file format pe-x86-64
Disassembly of section .text:
0000000000000000 <NonTemplate::~NonTemplate()>:
0: ff 25 00 00 00 00 jmpq *0x0(%rip) # 6
<NonTemplate::~NonTemplate()+0x6>
6: 90 nop
7: 90 nop
d000003.o: file format pe-x86-64
Disassembly of section .text:
0000000000000000 <NonTemplate::~NonTemplate()>:
0: ff 25 00 00 00 00 jmpq *0x0(%rip) # 6
<NonTemplate::~NonTemplate()+0x6>
6: 90 nop
7: 90 nop
```
the symbols for `Template<void>` is anyway missing in libtest2.dll.
I'm confusing its behavior and believe it's a bug.
>From gcc-bugs-return-572187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 15 23:53:49 2017
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--- Comment #8 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Fixed for GCC 7.3 and GCC 8.
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Subject: [Bug rtl-optimization/60818] ICE in validate_condition_mode on powerpc*-linux-gnu*
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Subject: [Bug c++/70277] Improve code generation for large initializer lists
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Subject: [Bug testsuite/78421] [7/8 Regression] vect-strided-a-u8-i2-gap.c fails on armeb
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Subject: [Bug middle-end/80929] [6/7/8 Regression] Division with constant no more optimized to mult highpart
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Subject: [Bug libstdc++/77691] [7/8 regression] experimental/memory_resource/resource_adaptor.cc FAILs
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Subject: [Bug target/80725] [7 Regression] s390x ICE on alsa-lib
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Subject: [Bug fortran/78238] [7/8 Regression] [OOP] ICE: verify_gimple failed, with -fdefault-integer-8
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Subject: [Bug tree-optimization/71751] [7/8 Regression] Segmentation fault in ssa_default_def
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Subject: [Bug middle-end/81812] [7/8 Regression] Empty virtual function fails to compile
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Subject: [Bug target/79451] [7/8 Regression] ICE in expand_expr_real_2, at expr.c:9021 w/ -O3 -floop-nest-optimize
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Subject: [Bug target/81228] [7/8 Regression] ICE in gen_vec_cmpv2dfv2di, at config/aarch64/aarch64-simd.md:2508
Date: Wed, 16 Aug 2017 07:36:00 -0000
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Subject: [Bug c/80778] [7/8 Regression] gcc.dg/auto-type-1.c ICEs with -flto
Date: Wed, 16 Aug 2017 07:37:00 -0000
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Subject: [Bug fortran/80657] [7/8 Regression] Loop in character function declaration
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Subject: [Bug c++/79104] [DR 696] wrong semantics for odr-use of constant variable from lambda
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Subject: [Bug target/68543] [AArch64] Implement overflow arithmetic standard names {u,}{add,sub,mul}v4<mode> and/or negv3<mode>
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Subject: [Bug c++/71169] [7/8 Regression] ICE on invalid C++ code in pop_nested_class (cp/class.c:7785)
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Subject: [Bug c++/80559] [7/8 Regression] Segmentation fault on invalid initialiser list template arguments
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Subject: [Bug middle-end/46555] [5/6/7/8 Regression] PHI RTL expansion leads to CSiBE regression
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Subject: [Bug target/80837] [7/8 regression] x86 accessing a member of a 16-byte atomic object generates terrible code: splitting/merging the bytes
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Subject: [Bug target/80881] [7/8 Regression] null pointer access in libgomp.h
Date: Wed, 16 Aug 2017 07:37:00 -0000
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Subject: [Bug tree-optimization/62630] [5/6/7/8 Regression] gcc.dg/graphite/vect-pr43423.c XFAILed
Date: Wed, 16 Aug 2017 07:37:00 -0000
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Subject: [Bug c/32643] [5/6/7/8 Regression] Wrong error message with unsigned char a = uchar&512
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Subject: [Bug go/78980] runtime/internal/atomic FAILs on 32-bit SPARC
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Subject: [Bug tree-optimization/79621] Missed path isolation opportunity
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Subject: [Bug middle-end/81782] [7/8 Regression] Yet another -Wmaybe-uninitialized false positive with empty array
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Subject: [Bug tree-optimization/80641] [7/8 Regression] Warning with std::vector resize in loop
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Subject: [Bug libstdc++/81076] __byte_operand<cv T> is not SFINAE-friendly
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Subject: [Bug c++/81575] [7/8 Regression] ICE on C++ code: in cp_build_addr_expr_1, at cp/typeck.c:5793
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Subject: [Bug lto/81004] [7/8 Regression] linking failed with -flto and static libboost_program_options
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Subject: [Bug bootstrap/80867] gnat bootstrap broken on powerpc64le-linux-gnu with -O3
Date: Wed, 16 Aug 2017 07:37:00 -0000
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Subject: [Bug target/77346] [7 Regression] ICE in push_reload, at reload.c:1350
Date: Wed, 16 Aug 2017 07:38:00 -0000
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Subject: [Bug tree-optimization/81181] [7 Regression] ICE in compute_antic, at tree-ssa-pre.c:2410
Date: Wed, 16 Aug 2017 07:38:00 -0000
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Subject: [Bug fortran/78983] [7/8 Regression] ICE with CAF-DT with allocatable member
Date: Wed, 16 Aug 2017 07:38:00 -0000
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Subject: =?UTF-8?B?W0J1ZyBsaWJzdGRjKysvODEzNTldIFs3IFJlZ3Jlc3Npb25dIGJvZ3VzIGVy?= =?UTF-8?B?cm9yOiBjb25zdHJ1Y3RvciByZXF1aXJlZCBiZWZvcmUgbm9uLXN0YXRpYyBk?= =?UTF-8?B?YXRhIG1lbWJlciBmb3Ig4oCYRm9vOjpCYXI6OnRlc3TigJkgaGFzIGJlZW4g?= =?UTF-8?B?cGFyc2Vk?Date: Wed, 16 Aug 2017 07:38:00 -0000
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Subject: [Bug sanitizer/81601] [7/8 Regression] incorrect Warray-bounds warning with -fsanitize
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Subject: [Bug tree-optimization/80520] [7/8 Regression] Performance regression from missing if-conversion
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Subject: [Bug libstdc++/81017] Class with vector of unique_ptr and std::function does not compile
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Subject: [Bug tree-optimization/33562] [5/6 Regression] aggregate DSE disabled
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Subject: [Bug fortran/79929] [7/8 Regression] Bogus Warning: '__builtin_memset': specified size 4294967291 exceeds maximum object size 2147483647
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Subject: [Bug libgomp/70805] libgomp.c/for-5.c and libgomp.c++/for-13.C FAIL
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Subject: [Bug target/71555] ICE: compilation "never" finishes with -O -mtune=sandybridge -mavx512bw
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Subject: [Bug c++/79488] [7/8 Regression] ICE from lambda that has invalid return type
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Subject: [Bug fortran/71935] [5/6/7/8 Regression] ICE is_c_interoperable(): gfc_simplify_expr failed
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Subject: [Bug libstdc++/79162] [7/8 Regression] [C++17] ambiguity in string assignment due to string_view overload
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Subject: [Bug fortran/80774] [7/8 Regression] ICE in gfc_conv_descriptor_data_get, at fortran/trans-array.c
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Subject: [Bug tree-optimization/81723] [7 Regression] fortran build doesn't terminate on 64bit targets
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Subject: [Bug rtl-optimization/70902] GCC freezes while compiling for 'skylake-avx512' target
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Subject: [Bug c++/81061] [7/8 Regression] ICE modifying read-only variable
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Subject: [Bug c/79855] params.def: missing period in PARAM_MAX_STORES_TO_MERGE
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Subject: [Bug tree-optimization/71625] missing strlen optimization on different array initialization style
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Subject: [Bug tree-optimization/81240] [7/8 Regression] ICE in dfs_enumerate_from
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Subject: [Bug c++/81722] [7/8 Regression] memory hog building c++ on i686-linux-gnu
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Subject: [Bug target/80479] [7/8 Regression] strcmp() produces valgrind errors on ppc64le
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Subject: [Bug target/78633] [7/8 Regression] [SH] libgcc/fp-bit.c:944:1: error: invalid rtl sharing found in the insn
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Subject: [Bug target/81456] [7/8 Regression] x86-64 optimizer makes wrong decision when optimizing for size
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Subject: [Bug target/79975] SEGV in cc1 compiling gcc.dg/rtl/x86_64/final.c
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Subject: [Bug c++/80763] [7/8 Regression] -O3 causes error: inline clone in same comdat group list
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Subject: [Bug tree-optimization/81373] [7/8 Regression] Graphite ICE in ssa_default_def at gcc/tree-dfa.c:305
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Subject: [Bug c++/81013] [7/8 Regression] ICE with invalid union in class hierarchy
Date: Wed, 16 Aug 2017 07:41:00 -0000
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Subject: [Bug c++/80449] [7/8 Regression] ICE reporting failed partial class template specialization class template argument deduction
Date: Wed, 16 Aug 2017 07:41:00 -0000
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Subject: [Bug fortran/80120] [7/8 Regression] Incorrect error with associate construct and character array
Date: Wed, 16 Aug 2017 07:41:00 -0000
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Subject: [Bug tree-optimization/80726] [7/8 Regression] Destructor not inlined anymore (regression)
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug rtl-optimization/70681] [6/7/8 Regression] FAIL: gcc.dg/ira-shrinkwrap-prep-2.c gcc.dg/pr10474.c on arm and powerpc
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Subject: [Bug rtl-optimization/78652] Add testcase for LRA generates wrong code by inheriting changed register
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Subject: [Bug tree-optimization/80213] [7/8 Regression] ICE in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:704
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug target/79742] ARM sched pipeline selection problems
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Subject: [Bug ada/79542] [7/8 regression] ICE in add_gnat_descriptive_type_attribute
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Subject: [Bug jit/66054] bootstrap comparison failure with --enable-host-shared
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Subject: [Bug libstdc++/68210] nothrow operator fails to call default new
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug testsuite/81056] [7/8 Regression] FAIL: 17_intro/names.cc (test for excess errors)
Date: Wed, 16 Aug 2017 07:42:00 -0000
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Subject: [Bug rtl-optimization/71118] [5/6/7/8 Regression] ftois instruction not emitted for float -> int bitcast
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Subject: [Bug c++/81054] [7/8 Regression] ICE with volatile variable in constexpr function
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Subject: [Bug fortran/69834] [OOP] Collision in derived type hashes
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Subject: [Bug c/69602] [6/7/8 Regression] over-ambitious logical-op warning on EAGAIN vs EWOULDBLOCK
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Subject: [Bug target/48863] A Bug When Assembler Instructions with C Expression Operands in arm-elf-gcc 4.5
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Subject: [Bug c++/80956] [7/8 Regression] ICE with abstract class vector
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Subject: [Bug ada/79441] [7/8 regression] gnat.dg/pack9.adb fails
Date: Wed, 16 Aug 2017 07:43:00 -0000
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Subject: [Bug libstdc++/70940] pmr::resource_adaptor requires optional allocator requirements and incorrectly aligns returned pointers.
Date: Wed, 16 Aug 2017 07:43:00 -0000
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Subject: [Bug middle-end/79989] [7/8 Regression][CHKP] ICE in assign_temp, at function.c:968
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Subject: [Bug rtl-optimization/79438] [7/8 Regression] ICE during RA w/ -O3 (or -Ofast) -funroll-loops for 32-bit BE SPE target
Date: Wed, 16 Aug 2017 07:43:00 -0000
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Subject: [Bug target/81613] [7/8 regression] FAIL: gfortran.dg/intrinsic_modulo_1.f90 -O3 -g execution test
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Subject: [Bug middle-end/80926] [7/8 Regression] longjmp not treated as noreturn during CFG build
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Subject: [Bug tree-optimization/71351] [7/8 Regression] ICE: Segmentation fault (graphite)
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Subject: [Bug c++/71832] [7/8 Regression] ICE on invalid C++11 code with incorrect decltype use for non-type template parameter: Segmentation fault
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Subject: [Bug target/78459] [7/8 Regression] [SH] ICE in maybe_record_trace_start building glibc string tests
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Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
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Subject: [Bug c++/78163] ref-qualified function type incorrectly accepted in function parameter type
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Subject: [Bug middle-end/78098] error: interrupt service routine can't be called directly
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Subject: [Bug c++/81016] [7/8 Regression] ICE: segfault with template struct specialisation
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Subject: [Bug c++/81525] [7 Regression] Invalid codegen with constexpr variable template
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Subject: [Bug target/81295] bootstrap broken on powerpc-linux-gnu with --enable-default-pie
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Subject: [Bug target/81481] [7/8 Regression] Spills %xmm to stack in glibc strspn SSE 4.2 variant
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Subject: [Bug fortran/78557] [7/8 Regression] [OOP] ICE in trans-expr.c with -fcheck=mem
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Subject: [Bug c++/71450] [5/6 Regression] ICE on invalid C++11 code on x86_64-linux-gnu: in tree check: expected record_type or union_type or qual_union_type, have template_type_parm in lookup_base, at cp/search.c:203
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c/81566] [5/6/7/8 Regression] invalid attribute aligned accepted on functions
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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|invalid attribute aligned |invalid attribute aligned
|accepted on functions |accepted on functions
>From gcc-bugs-return-572305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 07:54:05 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78643] [5/6/7/8 Regression] ICE in convert_move, at expr.c:230
Date: Wed, 16 Aug 2017 07:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/45397] [5/6 Regression] Issues with integer narrowing conversions
Date: Wed, 16 Aug 2017 07:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/81837] Internal compiler error (cp/typeck2.c:1264)
Date: Wed, 16 Aug 2017 07:56:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, all releases ICE.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/81572] New: [7/8 Regression] gcc-7 regression: unnecessary vector regmove on compare
Date: Wed, 16 Aug 2017 08:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81572
Bug ID: 81572
Summary: [7/8 Regression] gcc-7 regression: unnecessary vector
regmove on compare
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: target
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Reporter: zoltan at hidvegi dot com
Target Milestone: 7.3
Target: powerpc64le-unknown-linux-gnu
Keywords: missed-optimization
Target Milestone: 7.3
Summary: [7/8 Regression] gcc-7 regression: unnecessary vector
regmove on compare
Created attachment 41843
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41843&action=edit
gcc-7 -O2 generates unnecessary vector regmove
This sequence generate an unnecessary regmove with gcc-7 that did not happen
with gcc-6. The gcc-7 code is like this:
xxlor 32,34,34
xxlandc 35,34,35
vcmpequb. 2,0,3
mfcr 3,2
rlwinm 3,3,25,1
blr
gcc-6 does not generate the xxlor 32,34,34 move.
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Subject: [Bug c++/81843] [8 Regression] ICE on valid C++11 code with variadic templates: in tsubst_pack_expansion, at cp/pt.c:11524
Date: Wed, 16 Aug 2017 08:05:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Summary|ICE on valid C++11 code |[8 Regression] ICE on valid
|with variadic templates: in |C++11 code with variadic
|tsubst_pack_expansion, at |templates: in
|cp/pt.c:11524 |tsubst_pack_expansion, at
| |cp/pt.c:11524
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r249755.
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Subject: [Bug c/61240] [5/6/7/8 Regression] Incorrect warning "integer overflow in expression" on pointer-pointer subtraction
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug lto/81487] [mingw32] ld.exe: error: asprintf failed
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/81197] [7/8 Regression] ICE with structured binding and lifetime-extended temporaries
Date: Wed, 16 Aug 2017 08:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Version|unknown |7.1.1
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Subject: [Bug middle-end/80295] [7/8 Regression] ICE in __builtin_update_setjmp_buf expander
Date: Wed, 16 Aug 2017 08:40:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug libstdc++/81751] [5/6/7 Regression]__basic_file::sync() may flush _all_ files
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/81753] Building of cross-compiler for powerpc-darwin7 is broken
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Aug 16 07:51:55 2017
New Revision: 251118
URL: https://gcc.gnu.org/viewcvs?rev=251118&root=gcc&view=rev
Log:
Fix building of cross compiler (PR target/81753).
2017-08-16 Martin Liska <mliska@suse.cz>
PR target/81753
* config.gcc: Respect previously set extra_objs in case
of darwin target.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config.gcc
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Subject: [Bug fortran/81770] [5/6/7 Regression] Bogus warning: Pointer in pointer assignment might outlive the pointer target
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Subject: [Bug c++/79590] ICE (internal compiler error) in nothrow_spec_p with generic lambda and `noexcept(noexcept(...))` expression
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Subject: [Bug c++/81671] [7 Regression] std::nullptr_t incompatible to std::nullptr_t
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Subject: [Bug target/81803] [7/8 regression] miscompilation at -O1 on mips64el
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Subject: [Bug driver/81829] [7 Regression] /usr/bin/gcc-{ar,nm,ranlib} segfault without arguments
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Subject: [Bug target/81753] Building of cross-compiler for powerpc-darwin7 is broken
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug demangler/81835] cxxabi.h has invalid link in comment.
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--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Aug 16 07:51:13 2017
New Revision: 251117
URL: https://gcc.gnu.org/viewcvs?rev=251117&root=gcc&view=rev
Log:
PR81815: Invalid conditional reduction
We weren't checking whether the phi in a conditional reduction was
used by the condition itself (which isn't a case we handle).
2017-08-11 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/81835
* tree-vect-loop.c (vect_is_simple_reduction): Simply checks for
the phi SSA_NAME. Check that the condition in a COND_EXPR does
not depend on the phi.
gcc/testsuite/
PR tree-optimization/81835
* gcc.dg/vect/pr81815.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr81815.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c
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Subject: [Bug tree-optimization/81834] loop with increment conditional on IV is not optimized out
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81834
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |rguenth at gcc dot gnu.org
Summary|Simple loop with single |loop with increment
|variable is not optimized |conditional on IV is not
|out |optimized out
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There's a chicken-and-egg issue in optimization -- proving that i < 1000 is
always
true for the increment requires the number of iterations to be known and that
requires this condition to be simplified.
optimistic VRP should be able to figure this out together with SCEV but SCEV
isn't fed with the intermediate VRP info nor does VRP query SCEV during
iteration at the right point.
Quite an arcane case though...
clang doesn't get it either.
>From gcc-bugs-return-572319-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:05:21 2017
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
Date: Wed, 16 Aug 2017 10:14:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
it has to be a constant literal.
>From gcc-bugs-return-572318-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:04:18 2017
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/81841] New: THREADPRIVATE (OpenMP) wrongly rejected in BLOCK DATA
Date: Wed, 16 Aug 2017 10:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81841
Bug ID: 81841
Summary: THREADPRIVATE (OpenMP) wrongly rejected in BLOCK DATA
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: openmp, rejects-valid
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dibr-bugzilla at daswigwam dot de
Target Milestone: ---
Keywords: openmp, rejects-valid
I believe the fix for Bug 44350 introduced an error present since. Code like:
block data
implicit none
integer :: int2
real :: flt2
common /c_block_2/ int2, flt2
!$OMP THREADPRIVATE(/c_block_2/)
data int2, flt2 /2, 2.2/
end block data
is rejected by gfortran (gcc version 4.9.2 (Debian 4.9.2-10)) with an error:
!$OMP THREADPRIVATE(/c_block_2/)
1
Error: !$OMP THREADPRIVATE statement is not allowed inside of BLOCK DATA at (1)
when compiled with 'gfortran -fopenmp -c'. Same error with gcc version 5.4.0
(GCC) or gcc version 6.2.0 (GCC). Looking at the latest sources of parse.c, I
suspect it's still failing for the latest version (hence the picked version in
the bug report).
Works with gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC)
See also http://forum.openmp.org/forum/viewtopic.php?f=3&t=1866 and
https://gcc.gnu.org/ml/fortran/2015-02/msg00086.html
I tried the suggestion in the OpenMP forum, adding another exception to the
check introduced into parse.c with r204185, so adding:
case ST_OMP_THREADPRIVATE:
to
else if (gfc_current_state () == COMP_BLOCK_DATA)
/* Fortran 2008, C1116. */
switch (st)
Gfortran then obviously does compile the code and not issue the error. A simple
test program seems to behave correctly and identical to ifort, xlf, and
pgfortran. A 'patch' against the git/trunk version would be:
index 9ac50f0..1a815a9 100644
--- a/gcc/fortran/parse.c
+++ b/gcc/fortran/parse.c
@@ -3694,6 +3694,7 @@ loop:
case ST_EQUIVALENCE:
case ST_IMPLICIT:
case ST_IMPLICIT_NONE:
+ case ST_OMP_THREADPRIVATE:
case ST_PARAMETER:
case ST_STRUCTURE_DECL:
case ST_TYPE:
I've not extensively tested the OpenMP behaviour though, only a few simple
tests. I also haven't checked if more OpenMP statements should be allowed.
>From gcc-bugs-return-572320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:05:58 2017
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Subject: [Bug c++/81843] [8 Regression] ICE on valid C++11 code with variadic templates: in tsubst_pack_expansion, at cp/pt.c:11524
Date: Wed, 16 Aug 2017 10:16:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |8.0
Target Milestone|--- |8.0
>From gcc-bugs-return-572321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:17:54 2017
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Subject: [Bug fortran/81827] Large compile time with derived-type rrays
Date: Wed, 16 Aug 2017 10:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |rguenth at gcc dot gnu.org
Version|unknown |7.1.1
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Those are "only" 2000 allocations, right? (level4)
Wow, there's a lot of code emitted so I must miss sth ;) Also it seems it does
re-allocation, thus if there's data alread there it allocates new one and
copies the old data?
I see 2156 malloc calls in .original, with optimization everything vanishes.
level5 is really bad, memory use jumps from 400MB (level4) to > 8GB and
1150s compile-time (at -O1).
tree PTA :1140.61 (99%) usr 1.69 (60%) sys1142.47 (99%) wall
35451 kB ( 4%) ggc
oh well ;)
Note that -O0 is a bit better (5GB, 61s), as expected RA takes most time
integrated RA : 15.84 (26%) usr 0.56 (30%) sys 16.39 (26%) wall
395411 kB (21%) ggc
LRA non-specific : 30.18 (49%) usr 0.19 (10%) sys 30.34 (48%) wall
15218 kB ( 1%) ggc
>From gcc-bugs-return-572322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:26:50 2017
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From: "christian.tremel at itsv dot at" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/81856] New: AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
Date: Wed, 16 Aug 2017 10:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81856
Bug ID: 81856
Summary: AIX: Makefile:20538: recipe for target 'stage1-bubble'
failed
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: christian.tremel at itsv dot at
Target Milestone: ---
AIX 7.1
XLC 13.1
build script:
root@aixbuildhost: /usr/local/src/gnutoolchain/gcc-7.2.0/gcc-build-7.2 # cat
build.sh
#!/usr/bin/bash
gmake clean
gmake distclean
export CONFIG_SHELL=/opt/freeware/bin/bash
export CONFIGURE_ENV_ARGS=/opt/freeware/bin/bash
# work around strange libtool error, see details at:
# https://www.ibm.com/developerworks/forums/thread.jspa?messageID=14145662
export RM="/usr/bin/rm -f"
export AR="/usr/bin/ar"
# use maximum amount of memory (heap) available to 32-bit programs
# seems not to be taken into account though
export LDR_CNTRL=MAXDATA=0x80000000
export CC="xlc_r"
export CXX="xlC_r"
export BOOT_CFLAGS="-O2 -I/opt/freeware/include"
export CFLAGS="-O2 -I/opt/freeware/include"
export CXXFLAGS="-O2 -I/opt/freeware/include"
export LIBCFLAGS="-O2 -I/opt/freeware/include"
export LIBCXXFLAGS="-O2 -I/opt/freeware/include"
export LDFLAGS="-L/opt/freeware/lib -Wl,-bbigtoc
-Wl,-blibpath:/opt/freeware/lib/gcc/powerpc-ibm-aix7.1.0.0/4.9.4:/opt/freeware/lib:/usr/lib:/lib
-Wl,-bmaxdata:0x80000000"
../configure
--with-as=/usr/bin/as \
--with-ld=/usr/bin/ld \
--prefix=/usr/local/gcc7 \
--disable-werror \
--enable-languages="c,c++,fortran,objc" \
--enable-version-specific-runtime-libs \
--disable-nls \
--enable-decimal-float=dpd \
--with-cloog=no \
--with-ppl=no \
--enable-__cxa_atexit \
--disable-libstdcxx-pch \
--with-included-gettext \
--enable-bootstrap
ulimit -d unlimited
ulimit -s unlimited
gmake -j 4 bootstrap
error:
Links are now set up to build a native compiler for powerpc-ibm-aix7.1.3.0.
checking for exported symbols... objdump: conftest: not a dynamic object
yes
checking for -rdynamic... objdump: conftest: not a dynamic object
no
checking for library containing dlopen... none required
checking for -fPIC -shared... no
checking for -fno-PIE option... yes
checking for -no-pie option... no
checking linker -z bndplt option... no
checking linker --push-state/--pop-state options... no
configure: updating cache ./config.cache
configure: creating ./config.status
config.status: creating as
config.status: creating collect-ld
config.status: creating nm
config.status: creating Makefile
config.status: creating ada/gcc-interface/Makefile
config.status: creating ada/Makefile
config.status: creating auto-host.h
config.status: executing depdir commands
mkdir .deps
config.status: executing gccdepdir commands
mkdir build
mkdir build/.deps
mkdir ada/.deps
mkdir brig
mkdir brig/.deps
mkdir c
mkdir c/.deps
mkdir cp
mkdir cp/.deps
mkdir fortran
mkdir fortran/.deps
mkdir go
mkdir go/.deps
mkdir jit
mkdir jit/.deps
mkdir lto
mkdir lto/.deps
mkdir objc
mkdir objc/.deps
mkdir objcp
mkdir objcp/.deps
mkdir c-family
mkdir c-family/.deps
mkdir common
mkdir common/.deps
config.status: executing default commands
gmake[2]: Leaving directory
'/usr/local/src/gnutoolchain/gcc-7.2.0/gcc-build-7.2'
Makefile:20538: recipe for target 'stage1-bubble' failed
gmake[1]: *** [stage1-bubble] Error 2
gmake[1]: Leaving directory
'/usr/local/src/gnutoolchain/gcc-7.2.0/gcc-build-7.2'
Makefile:20858: recipe for target 'bootstrap' failed
gmake: *** [bootstrap] Error 2
>From gcc-bugs-return-572323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 08:40:41 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-08-16
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
The log excerpt does not contain the error. Please attach the full log.
>From gcc-bugs-return-572324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 09:06:57 2017
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Subject: [Bug c++/81852] Feature request: __cpp_threadsafe_static_init
Date: Wed, 16 Aug 2017 10:44:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
>From gcc-bugs-return-572325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 09:09:09 2017
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/81827] Large compile time with derived-type rrays
Date: Wed, 16 Aug 2017 10:44:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
4.9.4 seems "fine" (well, it doesn't allocate recursively but just
zero-initializes everything...)
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
Date: Wed, 16 Aug 2017 10:49:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
The full build log, not just an excerpt.
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From: "christian.tremel at itsv dot at" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
Date: Wed, 16 Aug 2017 10:49:00 -0000
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--- Comment #2 from christian.tremel at itsv dot at ---
hmmm..not sure which logfile you are after. theres is nothing in config.log
that points to that bubble error.
root@aixbuildhost: /usr/local/src/gnutoolchain/gcc-7.2.0/gcc-build-7.2 # grep
-r stage1-bubble *
Makefile:.PHONY: stage1-bubble
Makefile:stage1-bubble::
Makefile:stage2-bubble:: stage1-bubble
Makefile:stageprofile-bubble:: stage1-bubble
Makefile:stageautoprofile-bubble:: stage1-bubble
Makefile: $(MAKE) $(RECURSE_FLAGS_TO_PASS) stage1-bubble
>From gcc-bugs-return-572328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 09:23:01 2017
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Subject: [Bug libstdc++/81017] Class with vector of unique_ptr and std::function does not compile
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/81852] Feature request: __cpp_threadsafe_static_init
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug libstdc++/68210] nothrow operator fails to call default new
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From: "abominable-snowman at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/81857] New: istreambuf_iterator not work as input iterator
Date: Wed, 16 Aug 2017 10:59:00 -0000
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Bug ID: 81857
Summary: istreambuf_iterator not work as input iterator
Product: gcc
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istreambuf_iterator not increment g-pointer of istream, so character will be
extracted twice (or more, under some occasion), so it not work as single-pass
input iterator:
std::stringstream s;
char b[] = "c2ee3d09-43b3-466d-b490-db35999a22cf";
char r[] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
// 012345678901234567890123456789012345
s << b;
EXAM_CHECK( !s.fail() ); // pass
std::copy_n( std::istreambuf_iterator<char>(s), 36, r );
EXAM_CHECK( !s.fail() ); // pass
EXAM_CHECK( memcmp(b, r, 36) == 0 ); // pass
EXAM_CHECK( s.tellg() == 35 ); // pass ?!
char c = 'q';
std::copy_n( std::istreambuf_iterator<char>(s), 1, &c );
EXAM_CHECK( !s.fail() ); // pass ?!
EXAM_CHECK( c == 'f' ); // pass ?!
EXAM_CHECK( s.tellg() == 35 ); // pass ?!
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #4 from christian.tremel at itsv dot at ---
Created attachment 41985
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41985&action=edit
build.log
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Subject: [Bug c++/81858] New: Wrong strict-aliasing warning
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Bug ID: 81858
Summary: Wrong strict-aliasing warning
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: joerg.richter@pdv-fs.de
Target Milestone: ---
cat > t.cc <<EOF
struct Bar
{
bool val;
};
struct Baz : Bar
{
char buf[1];
};
template<class T> struct Quux
{
void foo() const
{
Baz baz;
if( !baz.val )
{
}
}
};
EOF
g++ -O2 -c t.cc -Wall
t.cc: In member function 'void Quux<T>::foo() const':
t.cc:16:16: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
if( !baz.val )
^~~
>From gcc-bugs-return-572335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:14:53 2017
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Subject: =?UTF-8?B?W0J1ZyBjKysvODA1OTNdIFs3IFJlZ3Jlc3Npb25dIEdDQyA3LCBhbGlnbmVk?= =?UTF-8?B?X3N0b3JhZ2UgYW5kIOKAnGRlcmVmZXJlbmNpbmcgdHlwZS1wdW5uZWQgcG9p?= =?UTF-8?B?bnRlciB3aWxsIGJyZWFrIHN0cmljdC1hbGlhc2luZyBydWxlc+KAnQ==?Date: Wed, 16 Aug 2017 11:27:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |joerg.richter@pdv-fs.de
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 81858 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-572334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:14:36 2017
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81858] Wrong strict-aliasing warning
Date: Wed, 16 Aug 2017 11:27:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is already fixed in GCC 7.2, which was released this week.
*** This bug has been marked as a duplicate of bug 80593 ***
>From gcc-bugs-return-572336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:17:02 2017
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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/81859] New: valgrind error from warn_about_normalization
Date: Wed, 16 Aug 2017 11:41:00 -0000
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Bug ID: 81859
Summary: valgrind error from warn_about_normalization
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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For the C testsuite file c-c++-common/cpp/normalize-3.c,
a valgrind build of trunk gcc revision 251105 does this:
c-c++-common/cpp/normalize-3.c:5:1: error: unknown type name ‘ª’
\u00AA
^~~~~~
==24049== Conditional jump or move depends on uninitialised value(s)
==24049== at 0x4C31B98: strlen (vg_replace_strmem.c:458)
==24049== by 0x112A520: pp_format(pretty_printer*, text_info*)
(pretty-print.
c:676)
==24049== by 0x112322E: diagnostic_report_diagnostic(diagnostic_context*,
dia
gnostic_info*) (diagnostic.c:974)
==24049== by 0x61977A: c_cpp_error(cpp_reader*, int, int, rich_location*,
cha
r const*, __va_list_tag (*) [1]) (c-common.c:6128)
==24049== by 0x1139A20: cpp_diagnostic_with_line(cpp_reader*, int, int,
unsig
ned int, unsigned int, char const*, __va_list_tag (*) [1]) (errors.c:174)
==24049== by 0x1139DE8: cpp_warning_with_line(cpp_reader*, int, unsigned
int,
unsigned int, char const*, ...) (errors.c:210)
==24049== by 0x1142B97: warn_about_normalization(cpp_reader*, cpp_token
const
*, normalize_state const*) [clone .isra.11] [clone .part.12] (lex.c:1310)
==24049== by 0x114521C: warn_about_normalization (lex.c:2916)
Revision 250947 doesn't have this problem, so it looks new to me.
>From gcc-bugs-return-572337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:25:35 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
Date: Wed, 16 Aug 2017 11:47:00 -0000
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
Looks like xlC_r is not a C++ compiler.
>From gcc-bugs-return-572338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:31:21 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #6 from christian.tremel at itsv dot at ---
well, it is.
root@aixbuildhost: /root # cat hello.cpp
#include <iostream>
int main()
{
std::cout << "It's me,Maria !\n";
}
root@aixbuildhost: /root # vi hello.cpp
root@aixbuildhost: /root # xlC_r -o /root/hello /root/hello.cpp
root@aixbuildhost: /root # ./hello
It's me,Mario !
>From gcc-bugs-return-572339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:40:18 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #7 from christian.tremel at itsv dot at ---
Created attachment 41986
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41986&action=edit
build_gcc.log
to rule out potential xlc quirks, i took a run with an older version of gcc.
also fails at same stage.
build script used:
#!/usr/bin/bash
gmake clean
gmake distclean
export CONFIG_SHELL="/opt/freeware/bin/bash"
export CONFIGURE_ENV_ARGS="/opt/freeware/bin/bash"
# work around strange libtool error, see details at:
# https://www.ibm.com/developerworks/forums/thread.jspa?messageID=14145662
export RM="/usr/bin/rm -f"
export AR="/usr/bin/ar"
# use maximum amount of memory (heap) available to 32-bit programs
# seems not to be taken into account though
export LDR_CNTRL="MAXDATA=0x80000000"
export CC="gcc"
export CXX="g++"
export BOOT_CFLAGS="-O2 -I/opt/freeware/include"
export CFLAGS="-O2 -I/opt/freeware/include"
export CXXFLAGS="-O2 -I/opt/freeware/include"
export LIBCFLAGS="-O2 -I/opt/freeware/include"
export LIBCXXFLAGS="-O2 -I/opt/freeware/include"
export LDFLAGS="-L/opt/freeware/lib -Wl,-bbigtoc
-Wl,-blibpath:/opt/freeware/lib/gcc/powerpc-ibm-aix7.1.0.0/4.9.4:/opt/freeware/lib:/usr/lib:/lib
-Wl,-bmaxdata:0x80000000"
../configure \
--with-as=/usr/bin/as \
--with-ld=/usr/bin/ld \
--prefix=/usr/local/gcc7 \
--disable-werror \
--enable-languages="c,c++,fortran,objc" \
--enable-version-specific-runtime-libs \
--disable-nls \
--enable-decimal-float=dpd \
--with-cloog=no \
--with-ppl=no \
--enable-__cxa_atexit \
--disable-libstdcxx-pch \
--with-included-gettext \
--enable-bootstrap
ulimit -d unlimited
ulimit -s unlimited
gmake -j 4 bootstrap
>From gcc-bugs-return-572340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:44:12 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
Your g++ is broken.
configure: error: in `/usr/local/src/gnutoolchain/gcc-7.2.0/gcc-build-7.2/gcc':
configure: error: cannot compute sizeof (long long)
See `config.log' for more details.
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Subject: [Bug middle-end/81818] aarch64 uses 2-3x memory and 2x time of arm at -Os, -O2, -O3
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--- Comment #6 from Andrew Roberts <andrewm.roberts at sky dot com> ---
Looks like this info got purged by the bugzilla failure, here it is again:
Ok, I've done some more digging.
Looking at the optimization options enabled by -O2 vs -O1, I built the test
program at -O1 and enabled each optimization in turn, on both ARM and AARCH64.
It looks like -fgcse is using the most memory of all the optimizations.
On ARM "-O1 -fgcse" is using MORE memory than "-O2".
This suggests to me that on ARM the gcse optimization is not being run for -O2
due to some cost benefit analysis or something. Where as it is on AARCH64. Is
there anyway to get some info out of gcc to prove this?
On AARCH64 -fgcse results in a huge compile time increase due to the additional
memory usage causing massive swapping. ARM compile time increased by 14%, but
AARCH compile time increased by 400%. When there is enough RAM to avoid
swapping -fgcse looks ok (2Gb on odroid-c2).
Tested using: gcc version 8.0.0 20170806 (experimental) (GCC) on
Raspberry PI 3 1Gb RAM (both armv7l and aarch64).
For ARM:
Optimization Level: -O1 -falign-functions
Time=1:20.76 Mem=320040 PageFaults=0
Optimization Level: -O1 -falign-jumps
Time=1:21.10 Mem=319940 PageFaults=0
Optimization Level: -O1 -falign-labels
Time=1:21.00 Mem=320028 PageFaults=0
Optimization Level: -O1 -falign-loops
Time=1:20.62 Mem=320028 PageFaults=0
Optimization Level: -O1 -fcaller-saves
Time=1:20.45 Mem=319884 PageFaults=0
Optimization Level: -O1 -fcode-hoisting
Time=1:22.01 Mem=320832 PageFaults=0
Optimization Level: -O1 -fcrossjumping
Time=1:21.28 Mem=320164 PageFaults=0
Optimization Level: -O1 -fcse-follow-jumps
Time=1:20.47 Mem=320000 PageFaults=0
Optimization Level: -O1 -fdevirtualize
Time=1:42.07 Mem=320032 PageFaults=0
Optimization Level: -O1 -fdevirtualize-speculatively
Time=1:20.44 Mem=320008 PageFaults=0
Optimization Level: -O1 -fexpensive-optimizations
Time=1:22.92 Mem=321752 PageFaults=0
Optimization Level: -O1 -fgcse
Time=1:34.12 Mem=556640 PageFaults=0 <================
Optimization Level: -O1 -fhoist-adjacent-loads
Time=1:20.45 Mem=319940 PageFaults=0
Optimization Level: -O1 -findirect-inlining
Time=1:21.31 Mem=320020 PageFaults=0
Optimization Level: -O1 -finline-small-functions
Time=1:32.36 Mem=319992 PageFaults=0
Optimization Level: -O1 -fipa-bit-cp
Time=1:21.13 Mem=320008 PageFaults=0
Optimization Level: -O1 -fipa-cp
Time=1:19.94 Mem=322140 PageFaults=0
Optimization Level: -O1 -fipa-icf
Time=1:21.50 Mem=319940 PageFaults=0
Optimization Level: -O1 -fipa-icf-functions
Time=1:20.93 Mem=320060 PageFaults=0
Optimization Level: -O1 -fipa-icf-variables
Time=1:20.48 Mem=320044 PageFaults=0
Optimization Level: -O1 -fipa-ra
Time=1:20.58 Mem=320284 PageFaults=0
Optimization Level: -O1 -fipa-sra
Time=1:12.69 Mem=310648 PageFaults=0
Optimization Level: -O1 -fipa-vrp
Time=1:20.45 Mem=319836 PageFaults=0
Optimization Level: -O1 -fisolate-erroneous-paths-dereference
Time=1:20.61 Mem=320024 PageFaults=0
Optimization Level: -O1 -flra-remat
Time=1:20.56 Mem=319944 PageFaults=0
Optimization Level: -O1 -foptimize-sibling-calls
Time=1:20.69 Mem=320012 PageFaults=0
Optimization Level: -O1 -foptimize-strlen
Time=1:21.10 Mem=320024 PageFaults=0
Optimization Level: -O1 -fpartial-inlining
Time=1:21.19 Mem=319888 PageFaults=0
Optimization Level: -O1 -fpeephole2
Time=1:20.75 Mem=319888 PageFaults=0
Optimization Level: -O1 -freorder-functions
Time=1:20.63 Mem=319884 PageFaults=0
Optimization Level: -O1 -frerun-cse-after-loop
Time=1:21.96 Mem=320984 PageFaults=0
Optimization Level: -O1 -fschedule-insns2
Time=1:24.68 Mem=343916 PageFaults=0
Optimization Level: -O1 -fschedule-insns
Time=1:52.77 Mem=324696 PageFaults=0
Optimization Level: -O1 -fstore-merging
Time=1:20.47 Mem=320208 PageFaults=0
Optimization Level: -O1 -fstrict-aliasing
Time=1:20.86 Mem=319880 PageFaults=0
Optimization Level: -O1 -fthread-jumps
Time=1:20.31 Mem=319900 PageFaults=0
Optimization Level: -O1 -ftree-pre
Time=1:21.38 Mem=320696 PageFaults=0
Optimization Level: -O1 -ftree-switch-conversion
Time=1:20.51 Mem=320004 PageFaults=0
Optimization Level: -O1 -ftree-tail-merge
Time=1:21.13 Mem=320040 PageFaults=0
Optimization Level: -O1 -ftree-vrp
Time=1:21.01 Mem=323032 PageFaults=0
For AARCH64:
Optimization Level: -O1 -falign-functions
Time=2:22.49 Mem=393844 PageFaults=150
Optimization Level: -O1 -falign-jumps
Time=2:20.70 Mem=393952 PageFaults=0
Optimization Level: -O1 -falign-labels
Time=2:21.09 Mem=393880 PageFaults=0
Optimization Level: -O1 -falign-loops
Time=2:20.68 Mem=393956 PageFaults=0
Optimization Level: -O1 -fcaller-saves
Time=2:20.98 Mem=393968 PageFaults=0
Optimization Level: -O1 -fcode-hoisting
Time=2:22.60 Mem=395656 PageFaults=0
Optimization Level: -O1 -fcrossjumping
Time=2:21.69 Mem=393956 PageFaults=0
Optimization Level: -O1 -fcse-follow-jumps
Time=2:21.12 Mem=393968 PageFaults=0
Optimization Level: -O1 -fdevirtualize
Time=2:58.68 Mem=393412 PageFaults=0
Optimization Level: -O1 -fdevirtualize-speculatively
Time=2:20.83 Mem=393968 PageFaults=0
Optimization Level: -O1 -fexpensive-optimizations
Time=2:23.44 Mem=394100 PageFaults=0
Optimization Level: -O1 -fgcse
Time=9:41.73 Mem=784488 PageFaults=9534 <====================
Optimization Level: -O1 -fhoist-adjacent-loads
Time=2:21.55 Mem=393716 PageFaults=14
Optimization Level: -O1 -findirect-inlining
Time=2:29.22 Mem=393856 PageFaults=0
Optimization Level: -O1 -finline-small-functions
Time=2:45.25 Mem=393252 PageFaults=0
Optimization Level: -O1 -fipa-bit-cp
Time=2:21.23 Mem=393800 PageFaults=0
Optimization Level: -O1 -fipa-cp
Time=2:20.63 Mem=390500 PageFaults=0
Optimization Level: -O1 -fipa-icf
Time=2:21.53 Mem=393796 PageFaults=0
Optimization Level: -O1 -fipa-icf-functions
Time=2:21.97 Mem=393892 PageFaults=0
Optimization Level: -O1 -fipa-icf-variables
Time=2:23.48 Mem=393804 PageFaults=0
Optimization Level: -O1 -fipa-ra
Time=2:21.18 Mem=394920 PageFaults=0
Optimization Level: -O1 -fipa-sra
Time=2:07.81 Mem=378276 PageFaults=0
Optimization Level: -O1 -fipa-vrp
Time=2:21.15 Mem=393812 PageFaults=0
Optimization Level: -O1 -fisolate-erroneous-paths-dereference
Time=2:21.33 Mem=393812 PageFaults=0
Optimization Level: -O1 -flra-remat
Time=2:20.67 Mem=393800 PageFaults=0
Optimization Level: -O1 -foptimize-sibling-calls
Time=2:21.33 Mem=393704 PageFaults=0
Optimization Level: -O1 -foptimize-strlen
Time=2:29.38 Mem=393716 PageFaults=0
Optimization Level: -O1 -fpartial-inlining
Time=2:20.68 Mem=393868 PageFaults=0
Optimization Level: -O1 -fpeephole2
Time=2:26.58 Mem=409308 PageFaults=4
Optimization Level: -O1 -freorder-functions
Time=2:21.28 Mem=393824 PageFaults=0
Optimization Level: -O1 -frerun-cse-after-loop
Time=2:22.67 Mem=395444 PageFaults=0
Optimization Level: -O1 -fschedule-insns2
Time=2:26.74 Mem=409168 PageFaults=0
Optimization Level: -O1 -fschedule-insns
Time=3:29.72 Mem=395320 PageFaults=0
Optimization Level: -O1 -fstore-merging
Time=2:20.61 Mem=393968 PageFaults=0
Optimization Level: -O1 -fstrict-aliasing
Time=2:21.11 Mem=393860 PageFaults=0
Optimization Level: -O1 -fthread-jumps
Time=2:20.56 Mem=393784 PageFaults=0
Optimization Level: -O1 -ftree-pre
Time=2:23.19 Mem=395344 PageFaults=0
Optimization Level: -O1 -ftree-switch-conversion
Time=2:29.38 Mem=393728 PageFaults=0
Optimization Level: -O1 -ftree-tail-merge
Time=2:20.86 Mem=393836 PageFaults=0
Optimization Level: -O1 -ftree-vrp
Time=2:22.31 Mem=389336 PageFaults=0
Comparing -O1, -O1 -fgcse and -O2
ARM (1Gb RAM):
gcc -O1 -c testmap.cpp
Time=2:25.26 Mem=318976 PageFaults=0
gcc -O1 -fgcse -c testmap.cpp
Time=2:42.04 Mem=554872 PageFaults=123
gcc -O2 -c testmap.cpp
Time=2:31.89 Mem=262828 PageFaults=11 <== Is this really running all -O2
opts?
AARCH64 (1Gb RAM):
gcc -O1 -c testmap.cpp
Time=3:10.68 Mem=397248 PageFaults=3
gcc -O1 -fgcse -c testmap.cpp
Time=5:15.26 Mem=771276 PageFaults=166
gcc -O2 -c testmap.cpp
Time=11:06.06 Mem=820744 PageFaults=4266
AARCH64 (2Gb RAM, odroid-c2, different clock speed etc):
gcc -O1 -c ../testmap.cpp
Time=1:47.58 Mem=394896 PageFaults=0
gcc -O1 -fgcse -c ../testmap.cpp
Time=3:10.06 Mem=765460 PageFaults=0
gcc -O2 -c ../testmap.cpp
Time=3:05.06 Mem=906624 PageFaults=0
>From gcc-bugs-return-572342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:49:34 2017
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Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Fixed in 6.5 and 7.2+.
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #9 from christian.tremel at itsv dot at ---
this is one more reason why i prefer the native ibm compilers.
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Subject: [Bug middle-end/81818] aarch64 uses 2-3x memory and 2x time of arm at -Os, -O2, -O3
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--- Comment #7 from Andrew Roberts <andrewm.roberts at sky dot com> ---
I'll try the memory testing on both arm and aarch64.
I've also tried -fopt-info-all-optall, I was hoping this would provide some
info on what was happening, but it only seems to give any output under -O3.
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
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--- Comment #2 from Aleksandr Slobodeniuk <alenuke at yandex dot ru> ---
Sorry, I didn't really specify the standard (and mess c with c++).
C11 standard.
6.8.4.2 The switch statement.
> 3 The expression of each case label shall be an integer constant expression
> and no two of the case constant expressions in the same switch statement
> shall have the same value after conversion.
So, by C11 standard case label shall be a constant expression.
Fields of const-qualified structs and unions, that were initialized with const
literals ARE *constant expressions*, isn't it?
-----------------
Yes, the standard also says that uninitialized part of union is undefined, but
that's not that case if we have fields with the same size.
-----------------
Sorry for wasting your time.
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
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--- Comment #3 from Aleksandr Slobodeniuk <alenuke at yandex dot ru> ---
(In reply to Richard Biener from comment #1)
> it has to be a constant literal.
Sorry, I didn't really specify the standard (and mess c with c++).
C11 standard.
6.8.4.2 The switch statement.
> 3 The expression of each case label shall be an integer constant expression
> and no two of the case constant expressions in the same switch statement
> shall have the same value after conversion.
So, by C11 standard case label shall be a constant expression.
Fields of const-qualified structs and unions, that were initialized with const
literals ARE *constant expressions*, isn't it?
-----------------
Yes, the standard also says that uninitialized part of union is undefined, but
that's not that case if we have fields with the same size.
-----------------
Sorry for wasting your time.
>From gcc-bugs-return-572347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 10:59:49 2017
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
Date: Wed, 16 Aug 2017 13:36:00 -0000
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--- Comment #4 from Aleksandr Slobodeniuk <alenuke at yandex dot ru> ---
> Fields of const-qualified structs and unions, that were initialized with
> const literals ARE *constant expressions*, isn't it?
Maybe that's the answer:
C11 standard.
6.6 Constant expressions.
> 6 Aninteger constant expression117) shall have integer type and shall only
> have operands that are integer constants, enumeration constants, character
> constants, sizeof expressions whose results are integer constants,
> _Alignof expressions, and floating constants that are the immediate
> operands of casts. Cast operators in an integer constant expression
> shall only convert arithmetic types to integer types, except as part of
> an operand to the sizeof or _Alignof operator.
>From gcc-bugs-return-572348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 11:01:22 2017
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
Date: Wed, 16 Aug 2017 13:51:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Aleksandr Slobodeniuk from comment #3)
> Fields of const-qualified structs and unions, that were initialized with
> const literals ARE *constant expressions*, isn't it?
No. See 6.6 p6
>From gcc-bugs-return-572349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 11:18:15 2017
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From: "abominable-snowman at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/81857] New: istreambuf_iterator not work as input iterator
Date: Wed, 16 Aug 2017 14:02:00 -0000
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Bug ID: 81857
Summary: istreambuf_iterator not work as input iterator
Product: gcc
Version: 6.4.0
Status: UNCONFIRMED
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CC: abominable-snowman at yandex dot ru
istreambuf_iterator not increment g-pointer of istream, so character will be
extracted twice (or more, under some occasion), so it not work as single-pass
input iterator:
std::stringstream s;
char b[] = "c2ee3d09-43b3-466d-b490-db35999a22cf";
char r[] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
// 012345678901234567890123456789012345
s << b;
EXAM_CHECK( !s.fail() ); // pass
std::copy_n( std::istreambuf_iterator<char>(s), 36, r );
EXAM_CHECK( !s.fail() ); // pass
EXAM_CHECK( memcmp(b, r, 36) == 0 ); // pass
EXAM_CHECK( s.tellg() == 35 ); // pass ?!
char c = 'q';
std::copy_n( std::istreambuf_iterator<char>(s), 1, &c );
EXAM_CHECK( !s.fail() ); // pass ?!
EXAM_CHECK( c == 'f' ); // pass ?!
EXAM_CHECK( s.tellg() == 35 ); // pass ?!
>From gcc-bugs-return-572350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 11:20:40 2017
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Subject: [Bug c/64609] No -Wbool-compare warning on "(a = 0 && 0) <= 4"
Date: Wed, 16 Aug 2017 14:03:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
It's because we get rid of that && 0 prior calling maybe_warn_bool_compare.
But we warn for
int
fn1 (int a, int b)
{
return ((a && b) <= 4);
}
warning: comparison of constant ‘4’ with boolean expression is always true
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Subject: [Bug c/81845] const union's field doesn't interpret as const in switch/case
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Aleksandr Slobodeniuk from comment #0)
> What's funny is that I didn't find any compiler, that could compile it.
That usually means it's not a bug then.
>From gcc-bugs-return-572352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 11:27:45 2017
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Subject: [Bug middle-end/81695] [5/6/7 Regression] internal compiler error: in size_binop_loc, at fold-const.c:1768
Date: Wed, 16 Aug 2017 14:08:00 -0000
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--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Aug 16 11:26:41 2017
New Revision: 251119
URL: https://gcc.gnu.org/viewcvs?rev=251119&root=gcc&view=rev
Log:
PR middle/81695
* fold-const.c (fold_indirect_ref_1): Restore original behavior
regarding size_zero_node.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
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Subject: [Bug target/48863] A Bug When Assembler Instructions with C Expression Operands in arm-elf-gcc 4.5
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|7.3 |6.3
--- Comment #10 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
This was really fixed for 6.3 ...
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Subject: [Bug c/81859] [8 Regression] valgrind error from warn_about_normalization
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
Summary|valgrind error from |[8 Regression] valgrind
|warn_about_normalization |error from
| |warn_about_normalization
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Subject: [Bug other/81096] [8 regression] test case ttest in libbacktrace fails starting with its introduction in r249111
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81096
Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |wilco at gcc dot gnu.org
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--- Comment #4 from Wilco <wilco at gcc dot gnu.org> ---
Confirmed. It works fine for me with ttest_CFLAGS = -pthread -funwind-tables so
the issue is that it doesn't also add $(AM_CFLAGS) like btest_CFLAGS does.
>From gcc-bugs-return-572355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:00:00 2017
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From: "wielkiegie at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/81860] New: Call to undefined inline function involving inheriting constructors
Date: Wed, 16 Aug 2017 14:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81860
Bug ID: 81860
Summary: Call to undefined inline function involving inheriting
constructors
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 41987
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41987&action=edit
Minimized test case that reproduces the issue
It seems that gcc forgets to emit or inline an empty inline constructor when
the following are used:
1. An empty template class A with empty constructor A() {} that is the one that
is missed
2. A class B with a template constructor (doesn't matter what is templated)
that accepts an object of class A with a default argument A() and stores it
inside of itself
3. A class C that derives from class B and uses inheriting constructors
Attached is a test-case for this.
$ g++ test-case3.cpp
/tmp/ccoFntWy.o: In function `main':
test-case3.cpp:(.text+0x11): undefined reference to `A<unsigned int>::A()'
collect2: error: ld returned 1 exit status
The problem does occur on gcc 7 and the newest snapshot (tested on godbolt). It
does not occur on gcc 6 and gcc 5. As such, it's a regression that first occurs
in gcc 7.
>From gcc-bugs-return-572357-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:06:57 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/81861] New: ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 14:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81861
Bug ID: 81861
Summary: ASan pr64820.c testcase segfaults with LTO and
-fstack-protector-strong
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
After r250965 the ASan's pr64820.c tescase fails with:
ASAN:DEADLYSIGNAL
=================================================================
==15720==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc
0x0000004009e5 bp 0x7fff5fca17c0 sp 0x7fff5fca17c0 T0)
==15720==The signal is caused by a READ memory access.
==15720==Hint: address points to the zero page.
#0 0x4009e4 in Func1
/home/max/workspace/downloads/gcc/gcc/testsuite/c-c++-common/asan/pr64820.c:13
#1 0x40080a in main
/home/max/workspace/downloads/gcc/gcc/testsuite/c-c++-common/asan/pr64820.c:23
#2 0x2b7622799f44 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#3 0x40085a
(/home/max/build/master/gcc/testsuite/gcc/pr64820.exe+0x40085a)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/home/max/workspace/downloads/gcc/gcc/testsuite/c-c++-common/asan/pr64820.c:13
in Func1
==15720==ABORTING
The code in resuting binary looks like this:
0000000000400910 <Func1>:
400910: 41 54 push %r12
400912: 55 push %rbp
400913: 53 push %rbx
400914: 48 81 ec 60 10 00 00 sub $0x1060,%rsp
40091b: 8b 05 5f 06 20 00 mov 0x20065f(%rip),%eax #
600f80 <__TMC_END__>
400921: 48 89 e3 mov %rsp,%rbx
400924: 48 89 dd mov %rbx,%rbp
400927: 85 c0 test %eax,%eax
400929: 0f 85 8a 00 00 00 jne 4009b9 <Func1+0xa9>
40092f: 48 89 da mov %rbx,%rdx
400932: 48 8d 7b 20 lea 0x20(%rbx),%rdi
400936: 48 c7 03 b3 8a b5 41 movq $0x41b58ab3,(%rbx)
40093d: 48 c1 ea 03 shr $0x3,%rdx
400941: 48 c7 43 08 08 0b 40 movq $0x400b08,0x8(%rbx)
400948: 00
400949: 48 c7 43 10 10 09 40 movq $0x400910,0x10(%rbx)
400950: 00
400951: c7 82 00 80 ff 7f f1 movl $0xf1f1f1f1,0x7fff8000(%rdx)
400958: f1 f1 f1
40095b: c7 82 04 82 ff 7f f3 movl $0xf3f3f3f3,0x7fff8204(%rdx)
400962: f3 f3 f3
Segfault here==> 400965: 48 8b 04 25 00 00 00 mov 0x0,%rax
40096c: 00
40096d: 48 89 84 24 58 10 00 mov %rax,0x1058(%rsp)
400974: 00
400975: 31 c0 xor %eax,%eax
400977: e8 84 ff ff ff callq 400900 <Ident>
>From gcc-bugs-return-572358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:14:56 2017
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Subject: [Bug target/77953] [MIPS] ice: insn does not satisfy its constraints - __bswapsi2
Date: Wed, 16 Aug 2017 14:17:00 -0000
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--- Comment #2 from James Cowgill <james410 at cowgill dot org.uk> ---
This appears to be fixed with GCC 7. It is still broken on the GCC 6 branch
though (using 6.4).
>From gcc-bugs-return-572359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:21:33 2017
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Subject: [Bug bootstrap/81856] AIX: Makefile:20538: recipe for target 'stage1-bubble' failed
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--- Comment #10 from christian.tremel at itsv dot at ---
tried out the 6.4 source, same errors.
>From gcc-bugs-return-572360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:27:16 2017
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Subject: [Bug c/81859] [8 Regression] valgrind error from warn_about_normalization
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-16
CC| |marxin at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r251029.
>From gcc-bugs-return-572361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:27:39 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/81861] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 14:28:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
You didn't specify compile flags, but using:
-O2 -fstack-protector-strong -fsanitize=address, I get:
51: c7 82 00 80 ff 7f f1 movl $0xf1f1f1f1,0x7fff8000(%rdx)
58: f1 f1 f1
5b: c7 82 04 82 ff 7f f3 movl $0xf3f3f3f3,0x7fff8204(%rdx)
62: f3 f3 f3
65: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax
6c: 00 00
6e: 48 89 84 24 58 10 00 mov %rax,0x1058(%rsp)
75: 00
76: 31 c0 xor %eax,%eax
The insn in question is:
#(insn:TI 35 19 40 3 (parallel [
# (set (mem/v/f/c:DI (plus:DI (reg/f:DI 7 sp)
# (const_int 4184 [0x1058])) [2 D.2177+0 S8 A64])
# (unspec:DI [
# (mem/f:DI (const_int 40 [0x28]) [4
MEM[(<address-space-1> long unsigned int *)40B]+0 S8 A64 AS1])
# ] UNSPEC_SP_SET))
# (set (reg:DI 0 ax [97])
# (const_int 0 [0]))
# (clobber (reg:CC 17 flags))
# ]) "pr64820.c":13 1002 {stack_protect_set_di}
# (expr_list:REG_UNUSED (reg:CC 17 flags)
# (expr_list:REG_UNUSED (reg:DI 0 ax [97])
# (nil))))
movq %fs:40, %rax # 35 stack_protect_set_di [length = 16]
movq %rax, 4184(%rsp)
xorl %eax, %eax
Maybe LTO doesn't handle address spaces correctly?
>From gcc-bugs-return-572362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:31:47 2017
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From: "dsanders11 at ucsbalum dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/81862] New: [C++11][constexpr] Constructor Parenthesized Initialization of Member Array Crash
Date: Wed, 16 Aug 2017 14:33:00 -0000
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Bug ID: 81862
Summary: [C++11][constexpr] Constructor Parenthesized
Initialization of Member Array Crash
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
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Priority: P3
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Created attachment 41988
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41988&action=edit
Reproduce case
Crash when using a parenthesized initialization of a member array with a
constexpr constructor.
Whittled the reproduce case down as much as I could, all parts of the reproduce
case source seem relevant to causing the crash. Switching to the standard
initialization of the member array without parentheses fixes the crash.
Crash error:
main.cpp:46:46: internal compiler error: in verify_ctor_sanity, at
cp/constexpr.c:2635
constexpr Foo<int, bool> foobar(32, false);
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Subject: [Bug target/81863] New: [7 regression] -mword-relocations is unreliable
Date: Wed, 16 Aug 2017 14:44:00 -0000
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Bug ID: 81863
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Product: gcc
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Created attachment 41989
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41989&action=edit
preprocessed linux/mm/shmem.c file, compressed
I ran into a few files in the linux kernel that while building with
-mword-relocations still produce 16-bit relocations, leading to a link error
with -fpie, e.g.
arm-linux-gnueabi-ld: mm/page_alloc.o: relocation R_ARM_THM_MOVW_ABS_NC against
`vm_zone_stat' can not be used when making a shared object; recompile with
-fPIC
With the attached source file:
$ arm-linux-gnueabi-gcc-7.1.1 -Wall mm/shmem.i -O2 -march=armv7-a -c
-Wno-unused -Wno-pointer-sign -fno-strict-aliasing -mword-relocations
$ objdump -dr mm/shmem.o | grep R_ARM_MOVW
326c: R_ARM_MOVW_ABS_NC vm_committed_as
34b8: R_ARM_MOVW_ABS_NC vm_committed_as
357c: R_ARM_MOVW_ABS_NC vm_committed_as
>From gcc-bugs-return-572364-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:36:08 2017
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Subject: [Bug tree-optimization/81861] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 15:02:00 -0000
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> Maybe LTO doesn't handle address spaces correctly?
Er, asan, not LTO.
>From gcc-bugs-return-572365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 13:51:10 2017
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Subject: [Bug tree-optimization/81861] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 15:12:00 -0000
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--- Comment #3 from Maxim Ostapenko <m.ostapenko at samsung dot com> ---
(In reply to Uroš Bizjak from comment #1)
> You didn't specify compile flags, but using:
>
> -O2 -fstack-protector-strong -fsanitize=address, I get:
Sorry, here they are:
$ /home/max/build/master/gcc/xgcc -B/home/max/build/master/gcc/
/home/max/workspace/downloads/gcc/gcc/testsuite/c-c++-common/asan/pr64820.c
-B/home/max/build/master/x86_64-unknown-linux-gnu/./libsanitizer/
-B/home/max/build/master/x86_64-unknown-linux-gnu/./libsanitizer/asan/
-L/home/max/build/master/x86_64-unknown-linux-gnu/./libsanitizer/asan/.libs
-fsanitize=address -g
-I/home/max/workspace/downloads/gcc/gcc/testsuite/../../libsanitizer/include
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects -fstack-protector-strong -lm -o
./pr64820.exe
$ /home/max/build/master/gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=/home/max/build/master/gcc/xgcc
Target: x86_64-unknown-linux-gnu
Configured with: /home/max/workspace/downloads/gcc/configure --enable-multilib
--enable-checking --target=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--prefix=/home/max/install/master --disable-bootstrap --enable-languages=c,c++
CFLAGS='-g -g3 -O0' CXXFLAGS='-g -g3 -O0' : (reconfigured)
/home/max/workspace/downloads/gcc/configure --enable-multilib --enable-checking
--target=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--build=x86_64-unknown-linux-gnu --prefix=/home/max/install/master
--disable-bootstrap CFLAGS='-g -g3 -O0' CXXFLAGS='-g -g3 -O0'
build_alias=x86_64-unknown-linux-gnu host_alias=x86_64-unknown-linux-gnu
target_alias=x86_64-unknown-linux-gnu --enable-languages=c,c++,lto --no-create
--no-recursion : (reconfigured) /home/max/workspace/downloads/gcc/configure
--enable-multilib --enable-checking --target=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--prefix=/home/max/install/master --disable-bootstrap CFLAGS='-g -g3 -O0'
CXXFLAGS='-g -g3 -O0' build_alias=x86_64-unknown-linux-gnu
host_alias=x86_64-unknown-linux-gnu target_alias=x86_64-unknown-linux-gnu
--enable-languages=c,c++,lto --no-create --no-recursion : (reconfigured)
/home/max/workspace/downloads/gcc/configure --enable-multilib --enable-checking
--target=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--build=x86_64-unknown-linux-gnu --prefix=/home/max/install/master
--disable-bootstrap CFLAGS='-g -g3 -O0' CXXFLAGS='-g -g3 -O0'
build_alias=x86_64-unknown-linux-gnu host_alias=x86_64-unknown-linux-gnu
target_alias=x86_64-unknown-linux-gnu --enable-languages=c,c++,lto --no-create
--no-recursion : (reconfigured) /home/max/workspace/downloads/gcc/configure
--enable-multilib --enable-checking --target=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--prefix=/home/max/install/master --disable-bootstrap CFLAGS='-g -g3 -O0'
CXXFLAGS='-g -g3 -O0' build_alias=x86_64-unknown-linux-gnu
host_alias=x86_64-unknown-linux-gnu target_alias=x86_64-unknown-linux-gnu
--enable-languages=c,c++,lto --no-create --no-recursion : (reconfigured)
/home/max/workspace/downloads/gcc/configure --enable-multilib --enable-checking
--target=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--build=x86_64-unknown-linux-gnu --prefix=/home/max/install/master
--disable-bootstrap CFLAGS='-g -g3 -O0' CXXFLAGS='-g -g3 -O0'
build_alias=x86_64-unknown-linux-gnu host_alias=x86_64-unknown-linux-gnu
target_alias=x86_64-unknown-linux-gnu --enable-languages=c,c++,lto --no-create
--no-recursion : (reconfigured) /home/max/workspace/downloads/gcc/configure
--enable-multilib --enable-checking --target=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--prefix=/home/max/install/master --disable-bootstrap CFLAGS='-g -g3 -O0'
CXXFLAGS='-g -g3 -O0' build_alias=x86_64-unknown-linux-gnu
host_alias=x86_64-unknown-linux-gnu target_alias=x86_64-unknown-linux-gnu
--enable-languages=c,c++,lto --no-create --no-recursion
Thread model: posix
gcc version 8.0.0 20170808 (experimental) (GCC)
>
> 51: c7 82 00 80 ff 7f f1 movl $0xf1f1f1f1,0x7fff8000(%rdx)
> 58: f1 f1 f1
> 5b: c7 82 04 82 ff 7f f3 movl $0xf3f3f3f3,0x7fff8204(%rdx)
> 62: f3 f3 f3
> 65: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax
> 6c: 00 00
> 6e: 48 89 84 24 58 10 00 mov %rax,0x1058(%rsp)
> 75: 00
> 76: 31 c0 xor %eax,%eax
>
> The insn in question is:
>
> #(insn:TI 35 19 40 3 (parallel [
> # (set (mem/v/f/c:DI (plus:DI (reg/f:DI 7 sp)
> # (const_int 4184 [0x1058])) [2 D.2177+0 S8 A64])
> # (unspec:DI [
> # (mem/f:DI (const_int 40 [0x28]) [4
> MEM[(<address-space-1> long unsigned int *)40B]+0 S8 A64 AS1])
> # ] UNSPEC_SP_SET))
> # (set (reg:DI 0 ax [97])
> # (const_int 0 [0]))
> # (clobber (reg:CC 17 flags))
> # ]) "pr64820.c":13 1002 {stack_protect_set_di}
> # (expr_list:REG_UNUSED (reg:CC 17 flags)
> # (expr_list:REG_UNUSED (reg:DI 0 ax [97])
> # (nil))))
> movq %fs:40, %rax # 35 stack_protect_set_di [length = 16]
> movq %rax, 4184(%rsp)
> xorl %eax, %eax
>
> Maybe LTO doesn't handle address spaces correctly?
>From gcc-bugs-return-572366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:02:59 2017
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Subject: [Bug lto/81861] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 15:16:00 -0000
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----------------------------------------------------------------------------
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Last reconfirmed| |2017-08-16
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Ever confirmed|0 |1
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Yep, something is wrong with LTO:
/hdd/uros/gcc-build/gcc/xgcc -B
/hdd/uros/gcc-build/x86_64-pc-linux-gnu/libsanitizer/ -B
/hdd/uros/gcc-build/x86_64-pc-linux-gnu/libsanitizer/asan/ -B
/hdd/uros/gcc-build/x86_64-pc-linux-gnu/libsanitizer/asan/.libs -B
/hdd/uros/gcc-build/gcc -fstack-protector-strong -fsanitize=address -O2 -flto
-save-temps pr64820.c
produces ccbxiIwG.ltrans0.s with:
movl $-235802127, 2147450880(%rdx)
movl $-202116109, 2147451396(%rdx)
>> movq 0, %rax
movq %rax, 4184(%rsp)
xorl %eax, %eax
Confirmed as LTO problem.
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Subject: [Bug fortran/81827] Large compile time with derived-type rrays
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testing a patch changing level 5 at -O1 from
> /usr/bin/time /space/rguenther/install/gcc-7.2/bin/gfortran -S t.f90 -O
1139.91user 1.99system 19:02.37elapsed 99%CPU (0avgtext+0avgdata
8035048maxresident)k
40816inputs+144outputs (49major+2004165minor)pagefaults 0swaps
to
> /usr/bin/time /abuild/rguenther/obj2/gcc/f951 t.f90 -O -quiet
126.42user 1.18system 2:26.94elapsed 86%CPU (0avgtext+0avgdata
2433296maxresident)k
0inputs+176outputs (0major+638570minor)pagefaults 0swaps
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Subject: [Bug lto/81861] [8.0 Regression] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 15:38:00 -0000
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Subject: [Bug lto/81861] [8.0 Regression] ASan pr64820.c testcase segfaults with LTO and -fstack-protector-strong
Date: Wed, 16 Aug 2017 15:49:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
CC Richi.
>From gcc-bugs-return-572370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:09:56 2017
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Subject: [Bug tree-optimization/81354] [5/6 Regression] Segmentation fault in SSA Strength Reduction using -O3
Date: Wed, 16 Aug 2017 15:55:00 -0000
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--- Comment #12 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Aug 16 14:09:15 2017
New Revision: 251120
URL: https://gcc.gnu.org/viewcvs?rev=251120&root=gcc&view=rev
Log:
[gcc]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* gimple-ssa-strength-reduction.c (create_add_on_incoming_edge):
Insert on edges rather than explicitly creating landing pads.
(analyze_candidates_and_replace): Commit edge inserts.
[gcc/testsuite]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* g++.dg/torture/pr81354.C: New file.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/torture/pr81354.C
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/gimple-ssa-strength-reduction.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:12:33 2017
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Subject: [Bug c/81859] [8 Regression] valgrind error from warn_about_normalization
Date: Wed, 16 Aug 2017 16:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, r251029 still needs tweaking. It needs to use strnlen(s, n) to safely
determine the length of s, not strlen(s), to avoid reading past the end of s if
it's not nul-terminated.
>From gcc-bugs-return-572372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:13:33 2017
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Subject: [Bug middle-end/81818] aarch64 uses 2-3x memory and 2x time of arm at -Os, -O2, -O3
Date: Wed, 16 Aug 2017 16:21:00 -0000
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--- Comment #8 from Andrew Roberts <andrewm.roberts at sky dot com> ---
I've tried building gcc-8-20170806 and gcc-8-20170813 with
--enable-gather-detailed-mem-stats
This fails on x86-64, arm and aarch64 with the same error.
The recently released 7.2.0 build ok on x86-64 at least, still testing the
rest.
Shall I file a separate bug report for gcc-8?
The error is:
/home/aroberts/gcc/gcc-build/./gcc/xgcc -B/home/aroberts/gcc/gcc-build/./gcc/
-xc -nostdinc /dev/null -S -o /dev/null
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
xgcc: internal compiler error: Segmentation fault (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[2]: *** [Makefile:1952: s-selftest-c] Error 4
rm fsf-funding.pod gcov.pod gpl.pod cpp.pod gfdl.pod gcc.pod gcov-dump.pod
gfortran.pod gcov-tool.pod
make[2]: Leaving directory '/home/aroberts/gcc/gcc-build/gcc'
make[1]: *** [Makefile:4305: all-gcc] Error 2
make[1]: Leaving directory '/home/aroberts/gcc/gcc-build'
make: *** [Makefile:918: all] Error 2
>From gcc-bugs-return-572373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:14:10 2017
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Subject: [Bug tree-optimization/81354] [5/6 Regression] Segmentation fault in SSA Strength Reduction using -O3
Date: Wed, 16 Aug 2017 16:35:00 -0000
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--- Comment #13 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Aug 16 14:11:26 2017
New Revision: 251121
URL: https://gcc.gnu.org/viewcvs?rev=251121&root=gcc&view=rev
Log:
[gcc]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* gimple-ssa-strength-reduction.c (create_add_on_incoming_edge):
Insert on edges rather than explicitly creating landing pads.
(analyze_candidates_and_replace): Commit edge inserts.
[gcc/testsuite]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* g++.dg/torture/pr81354.C: New file.
Added:
branches/gcc-6-branch/gcc/testsuite/g++.dg/torture/pr81354.C
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/gimple-ssa-strength-reduction.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:16:19 2017
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Subject: [Bug tree-optimization/81354] [5/6 Regression] Segmentation fault in SSA Strength Reduction using -O3
Date: Wed, 16 Aug 2017 16:36:00 -0000
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--- Comment #14 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Aug 16 14:13:27 2017
New Revision: 251122
URL: https://gcc.gnu.org/viewcvs?rev=251122&root=gcc&view=rev
Log:
[gcc]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* gimple-ssa-strength-reduction.c (create_add_on_incoming_edge):
Insert on edges rather than explicitly creating landing pads.
(analyze_candidates_and_replace): Commit edge inserts.
[gcc/testsuite]
2017-08-16 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-08-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/81354
* g++.dg/torture/pr81354.C: New file.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr81354.C
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/gimple-ssa-strength-reduction.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-572375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:17:56 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/81818] aarch64 uses 2-3x memory and 2x time of arm at -Os, -O2, -O3
Date: Wed, 16 Aug 2017 16:46:00 -0000
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--- Comment #9 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to Andrew Roberts from comment #8)
> I've tried building gcc-8-20170806 and gcc-8-20170813 with
> --enable-gather-detailed-mem-stats
>
> This fails on x86-64, arm and aarch64 with the same error.
>
> Shall I file a separate bug report for gcc-8?
>
Yes please. One bug report per issue.
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/81814] Incorrect behaviour at -O0 (conditional operator)
Date: Wed, 16 Aug 2017 16:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81814
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I wonder if I could just
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -3401,14 +3401,14 @@ operand_equal_for_comparison_p (tree arg0, tree arg1,
tree other)
primarg1 = get_narrower (arg1, &unsignedp1);
primother = get_narrower (other, &unsignedpo);
+ tree type = TREE_TYPE (arg0);
correct_width = TYPE_PRECISION (TREE_TYPE (arg1));
if (unsignedp1 == unsignedpo
+ && TYPE_PRECISION (TREE_TYPE (primarg1)) == TYPE_PRECISION (type)
&& TYPE_PRECISION (TREE_TYPE (primarg1)) < correct_width
&& TYPE_PRECISION (TREE_TYPE (primother)) < correct_width)
{
- tree type = TREE_TYPE (arg0);
-
/* Make sure shorter operand is extended the right way
to match the longer operand. */
primarg1 = fold_convert (signed_or_unsigned_type_for
so far it seems to work.
>From gcc-bugs-return-572377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:23:05 2017
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From: "Rolf.Woehrmann@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/61373] neon registers restored incorrectly with -mapcs-frame -O -fno-omit-frame-pointer
Date: Wed, 16 Aug 2017 17:22:00 -0000
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Rolf.Woehrmann@t-online.de changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Rolf.Woehrmann@t-online.de
--- Comment #4 from Rolf.Woehrmann@t-online.de ---
Hi
this problem of generating wrong restore code for neon registers is still
happening in 7.2.0 when using the -mapcs-frame option.
Since this is just wrong code generation which should never happen, I highly
recommend to either emit a warning when using neon with -mapcs-frame option
(like together with -mfpu=neon-xyz) or simply fix the code generation bug.
I ran into this problem and spent aka wasted the last 3 days to find this out.
A simple warning at least should have avoided this. In most of the cases we
could remove -mapcs-frame if we only knew.
Gret Thanks
Rolf
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From: "andrewm.roberts at sky dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/81864] New: building gcc 8 with --enable-gather-detailed-mem-stats fails on x86-64, arm and aarch64 under gnu linux
Date: Wed, 16 Aug 2017 17:38:00 -0000
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Bug ID: 81864
Summary: building gcc 8 with --enable-gather-detailed-mem-stats
fails on x86-64, arm and aarch64 under gnu linux
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: andrewm.roberts at sky dot com
Target Milestone: ---
Building gcc gcc-8-20170806 with --enable-gather-detailed-mem-stats fails:
On x64, arm and aarch64.
gcc-7.2.0 (release version) builds ok (at least on x64) with same options.
gcc-8.0.0 20170813 also fails on all.
on x64:
/home/aroberts/gcc/gcc-build/./gcc/xgcc -B/home/aroberts/gcc/gcc-build/./gcc/
-xc -nostdinc /dev/null -S -o /dev/null
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
xgcc: internal compiler error: Segmentation fault (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[2]: *** [Makefile:1952: s-selftest-c] Error 4
rm fsf-funding.pod gcov.pod gpl.pod cpp.pod gfdl.pod gcc.pod gcov-dump.pod
gfortran.pod gcov-tool.pod
make[2]: Leaving directory '/home/aroberts/gcc/gcc-build/gcc'
make[1]: *** [Makefile:4305: all-gcc] Error 2
make[1]: Leaving directory '/home/aroberts/gcc/gcc-build'
make: *** [Makefile:918: all] Error 2
/home/aroberts/gcc/gcc-build/./gcc/xgcc -v -save-temps
-B/home/aroberts/gcc/gcc-build/./gcc/ -xc -nostdinc /dev/null -S -o /dev/null
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
Reading specs from /home/aroberts/gcc/gcc-build/./gcc/specs
COLLECT_GCC=/home/aroberts/gcc/gcc-build/./gcc/xgcc
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-8.0.0/configure --prefix=/usr/local/gcc-8.0.0
--program-suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-initfini-array --enable-gnu-indirect-function --with-isl
--enable-languages=c,c++,fortran,lto --disable-libgcj --enable-lto
--enable-multilib --with-tune=generic --with-arch_32=i686
--host=x86_64-unknown-linux-gnu --build=x86_64-unknown-linux-gnu
--with-ld=/usr/local/bin/ld --with-gnu-ld --with-as=/usr/local/bin/as
--with-gnu-as --disable-bootstrap --enable-gather-detailed-mem-stats
Thread model: posix
gcc version 8.0.0 20170806 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-B'
'/home/aroberts/gcc/gcc-build/./gcc/' '-nostdinc' '-S' '-o' '/dev/null'
'-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests' '-mtune=generic'
'-march=x86-64'
/home/aroberts/gcc/gcc-build/./gcc/cc1 -E -quiet -nostdinc -v -iprefix
/home/aroberts/gcc/gcc-build/gcc/../lib/gcc/x86_64-unknown-linux-gnu/8.0.0/
-isystem /home/aroberts/gcc/gcc-build/./gcc/include -isystem
/home/aroberts/gcc/gcc-build/./gcc/include-fixed /dev/null -mtune=generic
-march=x86-64 -fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
-fpch-preprocess -o null.i
xgcc: internal compiler error: Segmentation fault (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Host OS:
Fedora 26 - x64
host gcc:
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin
--enable-initfini-array --with-isl --enable-libmpx
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 7.1.1 20170622 (Red Hat 7.1.1-3) (GCC)
host ld:
ld -v
GNU ld (GNU Binutils) 2.29
uname -a
Linux ryzen 4.12.5-300.fc26.x86_64 #1 SMP Mon Aug 7 15:27:25 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux
cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 1
model name : AMD Ryzen 7 1700 Eight-Core Processor
stepping : 1
microcode : 0x8001126
cpu MHz : 1550.000
cache size : 512 KB
physical id : 0
siblings : 16
core id : 0
cpu cores : 8
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf
pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx
f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse
3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext
perfctr_l2 mwaitx hw_pstate vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx
smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf arat npt
lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists
pausefilter pfthreshold avic overflow_recov succor smca
bugs : fxsave_leak sysret_ss_attrs null_seg
bogomips : 5988.80
TLB size : 2560 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate eff_freq_ro [13] [14]
On arm:
Host OS: Arch Linux ARM, on Raspberry Pi3
/home/alarm/gcc/gcc-build/./gcc/xgcc -v -B/home/alarm/gcc/gcc-build/./gcc/ -xc
-nostdinc /dev/null -S -o /dev/null
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
Reading specs from /home/alarm/gcc/gcc-build/./gcc/specs
COLLECT_GCC=/home/alarm/gcc/gcc-build/./gcc/xgcc
Target: armv7l-unknown-linux-gnueabihf
Configured with: ../gcc-8.0.0/configure --prefix=/usr/local/gcc-8.0.0
--program-suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-gnu-indirect-function --enable-lto --with-isl
--enable-languages=c,c++,fortran --disable-libgcj --enable-clocale=gnu
--disable-libstdcxx-pch --enable-install-libiberty --disable-multilib
--disable-libssp --host=armv7l-unknown-linux-gnueabihf
--build=armv7l-unknown-linux-gnueabihf --with-arch=armv7-a --with-float=hard
--with-fpu=vfpv3-d16 --disable-bootstrap --enable-gather-detailed-mem-stats
Thread model: posix
gcc version 8.0.0 20170806 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-B' '/home/alarm/gcc/gcc-build/./gcc/' '-nostdinc'
'-S' '-o' '/dev/null' '-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests'
'-mfloat-abi=hard' '-mfpu=vfpv3-d16' '-mtls-dialect=gnu' '-marm'
'-march=armv7-a+fp'
/home/alarm/gcc/gcc-build/./gcc/cc1 -quiet -nostdinc -v -iprefix
/home/alarm/gcc/gcc-build/gcc/../lib/gcc/armv7l-unknown-linux-gnueabihf/8.0.0/
-isystem /home/alarm/gcc/gcc-build/./gcc/include -isystem
/home/alarm/gcc/gcc-build/./gcc/include-fixed /dev/null -quiet -dumpbase null
-mfloat-abi=hard -mfpu=vfpv3-d16 -mtls-dialect=gnu -marm -march=armv7-a+fp
-auxbase-strip /dev/null -version
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests -o /dev/null
xgcc: internal compiler error: Segmentation fault (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
On aarch64:
Host OS: Arch Linux ARM, on Raspberry Pi3
/home/alarm/gcc/gcc-build/./gcc/xgcc -v -B/home/alarm/gcc/gcc-build/./gcc/ -xc
-nostdinc /dev/null -S -o /dev/null
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests
Reading specs from /home/alarm/gcc/gcc-build/./gcc/specs
COLLECT_GCC=/home/alarm/gcc/gcc-build/./gcc/xgcc
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc-8.0.0/configure --prefix=/usr/local/gcc-8.0.0
--program-suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-gnu-indirect-function --enable-lto --with-isl
--enable-languages=c,c++,fortran --disable-libgcj --enable-clocale=gnu
--disable-libstdcxx-pch --enable-install-libiberty --disable-multilib
--enable-shared --enable-clocale=gnu --with-arch-directory=aarch64
--enable-multiarch --disable-libssp --host=aarch64-unknown-linux-gnu
--build=aarch64-unknown-linux-gnu --with-arch=armv8-a --disable-bootstrap
--enable-gather-detailed-mem-stats
Thread model: posix
gcc version 8.0.0 20170806 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-B' '/home/alarm/gcc/gcc-build/./gcc/' '-nostdinc'
'-S' '-o' '/dev/null' '-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests'
'-march=armv8-a' '-mlittle-endian' '-mabi=lp64'
/home/alarm/gcc/gcc-build/./gcc/cc1 -quiet -nostdinc -v -imultiarch
aarch64-linux-gnu -iprefix
/home/alarm/gcc/gcc-build/gcc/../lib/gcc/aarch64-unknown-linux-gnu/8.0.0/
-isystem /home/alarm/gcc/gcc-build/./gcc/include -isystem
/home/alarm/gcc/gcc-build/./gcc/include-fixed /dev/null -quiet -dumpbase null
-march=armv8-a -mlittle-endian -mabi=lp64 -auxbase-strip /dev/null -version
-fself-test=../../gcc-8.0.0/gcc/testsuite/selftests -o /dev/null
xgcc: internal compiler error: Segmentation fault (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-572379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:33:39 2017
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Subject: [Bug tree-optimization/81354] [5/6 Regression] Segmentation fault in SSA Strength Reduction using -O3
Date: Wed, 16 Aug 2017 17:42:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Now fixed everywhere.
>From gcc-bugs-return-572380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 14:45:00 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/81488] [8 Regression] gcc goes off the limits allocating memory in gimple-ssa-strength-reduction.c
Date: Wed, 16 Aug 2017 18:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81488
--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Doesn't reproduce for powerpc64le on current trunk. I'll try a cross.
>From gcc-bugs-return-572381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 15:02:53 2017
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/81832] [8 Regression] ICE in expand_LOOP_DIST_ALIAS, at internal-fn.c:2273
Date: Wed, 16 Aug 2017 18:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81832
--- Comment #2 from amker at gcc dot gnu.org ---
Author: amker
Date: Wed Aug 16 15:02:03 2017
New Revision: 251123
URL: https://gcc.gnu.org/viewcvs?rev=251123&root=gcc&view=rev
Log:
PR tree-optimization/81832
* tree-ssa-loop-ch.c (should_duplicate_loop_header_p): Don't
copy loop header which has IFN_LOOP_DIST_ALIAS call.
gcc/testsuite
* gcc.dg/tree-ssa/pr81832.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr81832.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-ch.c
>From gcc-bugs-return-572382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 16 15:12:35 2017
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From: Eric Gallager <egall@gwmail.gwu.edu>
Date: Wed, 16 Aug 2017 18:59:00 -0000
Message-ID: <CAMfHzOsuRRY24BkP2RK5enfKdeL68nD1gBn0R0L4zkdKASL4mA@mail.gmail.com>
Subject: Re: [Bug web/?????] New: Fwd: failure notice: Bugzilla down.
To: Jonathan Wakely <jwakely.gcc@gmail.com>
Cc: Martin Sebor <msebor@gmail.com>, gcc-bugs@gcc.gnu.org, GCC Mailing List <gcc@gcc.gnu.org>, rguenth@gcc.gnu.org
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On 8/15/17, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> On 15 August 2017 at 04:10, Martin Sebor wrote:
>> On 08/14/2017 04:22 PM, Eric Gallager wrote:
>>>
>>> I'm emailing this manually to the list because Bugzilla is down and I
>>> can't file a bug on Bugzilla about Bugzilla being down. The error
>>> message looks like this:
>
>
> Even if it were possible, there wouldn't be any point in filing a bug
> that bugzilla's down, and so not much point emailing gcc-bugs either
> (since that's for bugzilla mail). Using gcc@ seems like the right
> list to me.
>
> N.B. since the server is being restored from a backup all of
> yesterday's changes to bugzilla have been lost, including all Richi's
> 7.2 release changes, and Eric's housekeeping.
>
> I don't suggest redoing all that work until all services are fully
> restored, in case it's lost again.
>
I see Richi redid all his 7.2 release changes; does that imply that
the server restore is now complete?
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug lto/81847] ICE with LTO enabled
2017-08-15 21:18 [Bug lto/81847] New: ICE with LTO enabled v at vsamko dot com
@ 2021-11-21 1:04 ` pinskia at gcc dot gnu.org
2021-12-07 7:27 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-11-21 1:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81847
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |7.5.0
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This seems be to fixed in GCC 8.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug lto/81847] ICE with LTO enabled
2017-08-15 21:18 [Bug lto/81847] New: ICE with LTO enabled v at vsamko dot com
2021-11-21 1:04 ` [Bug lto/81847] " pinskia at gcc dot gnu.org
@ 2021-12-07 7:27 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-12-07 7:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81847
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Known to work| |8.1.0
Status|NEW |RESOLVED
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed then.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-12-07 7:27 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-11-21 1:04 ` [Bug lto/81847] " pinskia at gcc dot gnu.org
2021-12-07 7:27 ` rguenth at gcc dot gnu.org
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