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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/67630] ymm and zmm register aren't preserved in interrupt handler
Date: Sun, 20 Sep 2015 10:36:00 -0000 [thread overview]
Message-ID: <bug-67630-4-Fl6LeLvQ1n@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-67630-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67630
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #2)
> Created attachment 36349 [details]
> A patch
@@ -867,10 +867,12 @@
case MODE_V16SF:
case MODE_V8SF:
case MODE_V4SF:
- if (TARGET_AVX
- && (misaligned_operand (operands[0], <MODE>mode)
- || misaligned_operand (operands[1], <MODE>mode)))
- return "vmovups\t{%1, %0|%0, %1}";
+ /* We must handle SSE since ix86_emit_save_reg_using_mov
+ generates the normal *mov<mode>_internal pattern for
+ interrupt handler. */
+ if (misaligned_operand (operands[0], <MODE>mode)
+ || misaligned_operand (operands[1], <MODE>mode))
+ return "%vmovups\t{%1, %0|%0, %1}";
else
return "%vmovaps\t{%1, %0|%0, %1}";
You should use
if ((TARGET_AVX || cfun->machine->is_interrupt)
&& (misaligned_operand (operands[0], <MODE>mode)
|| misaligned_operand (operands[1], <MODE>mode)))
return "%vmovups\t{%1, %0|%0, %1}";
Your patch gives legacy SSE targets ability to load/store unaligned operands
outside interrupt handler for no reason. Legacy SSE is different to AVX, the
latter also allows unaligned 16byte operands in arithmetic/logic VEX-prefixed
insns. This is the reason we have to relax alignment requirements on V4SFmode
load/stores for AVX targets.
>From gcc-bugs-return-497604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Sep 20 13:04:38 2015
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From: "dimhen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/67647] New: [6 regression] boostrap FAIL with --disable-libstdcxx-dual-abi
Date: Sun, 20 Sep 2015 13:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67647
Bug ID: 67647
Summary: [6 regression] boostrap FAIL with
--disable-libstdcxx-dual-abi
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: dimhen at gmail dot com
Target Milestone: ---
r227942 FAIL
r227792 PASS
~/src/gcc_current/configure --prefix=/usr/local/gcc_current
--enable-languages=c,c++,lto --enable-plugin --disable-multilib
make PASS
~/src/gcc_current/configure --prefix=/usr/local/gcc_current
--enable-languages=c,c++,lto --enable-plugin --disable-multilib
--disable-libstdcxx-dual-abi
make FAIL
/home/dimhen/build/gcc_current/./prev-gcc/xg++
-B/home/dimhen/build/gcc_current/./prev-gcc/
-B/usr/local/gcc_current/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/dimhen/src/gcc_current/libstdc++-v3/libsupc++
-L/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-c -g -O2 -gtoggle -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
-DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild
-I/home/dimhen/src/gcc_current/gcc -I/home/dimhen/src/gcc_current/gcc/build
-I/home/dimhen/src/gcc_current/gcc/../include
-I/home/dimhen/src/gcc_current/gcc/../libcpp/include \
-o build/inchash.o /home/dimhen/src/gcc_current/gcc/inchash.c
In file included from
/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/string:52:0,
from /home/dimhen/src/gcc_current/gcc/system.h:201,
from /home/dimhen/src/gcc_current/gcc/genconstants.c:28:
/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:3304:7:
error: expected initializer before ‘capacity’
capacity() const _GLIBCXX_NOEXCEPT
^
/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:3325:15:
error: variable or field ‘reserve’ declared void
reserve(size_type __res_arg = 0);
^
/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:3325:15:
error: ‘size_type’ was not declared in this scope
/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:
In function ‘void std::clear()’:
[...]
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From: "dimhen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/67647] [6 regression] boostrap FAIL with --disable-libstdcxx-dual-abi
Date: Sun, 20 Sep 2015 13:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idg647
--- Comment #1 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
Fedora 22 / x64
prev parent reply other threads:[~2015-09-20 10:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 17:03 [Bug other/67630] New: " hjl.tools at gmail dot com
2015-09-18 17:29 ` [Bug other/67630] " hjl.tools at gmail dot com
2015-09-18 22:52 ` hjl.tools at gmail dot com
2015-09-19 22:35 ` hjl.tools at gmail dot com
2015-09-20 10:36 ` ubizjak at gmail dot com [this message]
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