[Bug target/60205] New: No ABU warning for AVX-512

[Bug target/60205] New: No ABU warning for AVX-512

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

            Bug ID: 60205
           Summary: No ABU warning for AVX-512
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: kirill.yukhin at intel dot com

[hjl@gnu-6 avx512-1]$ cat w.i
typedef long long __m512i __attribute__ ((__vector_size__ (64),
__may_alias__));
typedef long long __m256i __attribute__ ((__vector_size__ (32),
__may_alias__));

__m256i
foo1 (__m256i x, __m256i y, __m256i z)
{
  return z;
}

__m512i
foo2 (__m512i x, __m512i y, __m512i z)
{
  return z;
}
[hjl@gnu-6 avx512-1]$ make w.s
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -mavx512f -O2 -S w.i
[hjl@gnu-6 avx512-1]$ make clean
rm -f *.s *.o *.i.* *.c.*
[hjl@gnu-6 avx512-1]$ cat w.i
typedef long long __m512i __attribute__ ((__vector_size__ (64),
__may_alias__));
typedef long long __m256i __attribute__ ((__vector_size__ (32),
__may_alias__));

__m256i
foo1 (__m256i x, __m256i y, __m256i z)
{
  return z;
}

__m512i
foo2 (__m512i x, __m512i y, __m512i z)
{
  return z;
}
[hjl@gnu-6 avx512-1]$ /export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/  -O2 -S w.i
w.i: In function ‘foo1’:
w.i:6:1: warning: AVX vector return without AVX enabled changes the ABI
 {
 ^
w.i:5:1: note: The ABI for passing parameters with 32-byte alignment has
changed in GCC 4.6
 foo1 (__m256i x, __m256i y, __m256i z)
 ^
w.i:5:1: warning: AVX vector argument without AVX enabled changes the ABI
[hjl@gnu-6 avx512-1]$ 

I am expecting similar warnings for AVX-512.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idY535

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #17 from Jeffrey A. Law <law at redhat dot com> ---
Should be fixed by Vlad's trunk commit.

[Bug target/60205] No ABI warning for AVX-512

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 32158
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32158&action=edit
Proposed patch

Patch that implements AVX512F warnings.
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Subject: [Bug target/60205] No ABI warning for AVX-512
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2014-02-18
           Assignee|unassigned at gcc dot gnu.org      |ubizjak at gmail dot com
   Target Milestone|---                         |4.9.0
     Ever confirmed|0                           |1
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Subject: [Bug java/60261] New: [4.9 Regression] Weird java install with --enable-version-specific-runtime-libs
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`261

            Bug ID: 60261
           Summary: [4.9 Regression] Weird java install with
                    --enable-version-specific-runtime-libs
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
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I get in

/usr/lib64/gcc/x86_64-suse-linux/
4.9  gcj-4.9-15  lib64  logging.properties  security

/usr/lib64/gcc/x86_64-suse-linux/4.9/
ecj.jar  include  jvgenmain        libgcj.la  libgcj.spec   libgij.so
ecj1     jc1      libgcj-tools.so  libgcj.so  libgcj_bc.so  pkgconfig

/usr/lib64/gcc/x86_64-suse-linux/gcj-4.9-15/
libjavamath.la  libjavamath.so

/usr/lib64/gcc/x86_64-suse-linux/lib64/gcj-4.9-15
classmap.db  libjvm.la  libjvm.so

not sure what happens without --enable-version-specific-runtime-libs.

Behaved "more sanely" with 4.8, everything under /usr/lib64/gcj-4.8-14/
(I also have --program-suffix=4.x)

[Bug target/60205] No ABI warning for AVX-512

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2014-02/msg01053.htm
                   |                            |l

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch at [1].

[1] http://gcc.gnu.org/ml/gcc-patches/2014-02/msg01053.html
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Subject: [Bug target/59794] [4.7/4.8 Regression] i386 backend fails to detect MMX/SSE/AVX ABI changes
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59794

--- Comment #14 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to David Abdurachmanov from comment #13)
> Could we get this under -Wno-abi/-Wabi?
> 
> We have 256-bit vectors [__vector(4) double], but no AVX available/enabled.
> We understand the affect on ABI compatibility and would like to disable such
> warnings.

This looks like a good suggestion to me. These warnings should be
enabled/disabled with -W{no-}psabi, since they in fact are psABI warnings.

The patch could be as simple as adding OPT_Wpsabi as the first argument to:

warning (0, "AVX vector return without AVX enabled changes the ABI");

-Wpsabi is enabled by default, so there would be no user-visible default
changes.

HJ, what is your opinion?
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Subject: [Bug target/59794] [4.7/4.8 Regression] i386 backend fails to detect MMX/SSE/AVX ABI changes
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59794

--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #14)
> The patch could be as simple as adding OPT_Wpsabi as the first argument to:
> 
> warning (0, "AVX vector return without AVX enabled changes the ABI");
> 
> -Wpsabi is enabled by default, so there would be no user-visible default
> changes.
> 
> HJ, what is your opinion?

It works for me.
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Subject: [Bug target/59794] [4.7/4.8 Regression] i386 backend fails to detect MMX/SSE/AVX ABI changes
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If we go that route, I'd say it would need to be
  if (warning (OPT_Wpsabi, "...")))
    warnedavx = true;
rather than
  warnedavx = true;
  warning (OPT_Wpsabi, "...");
so that if some functions have -Wpsabi warning disabled and other enabled, if
we decide to first warn on the one with the warning disabled, we warn on those
that have it enabled.

[Bug target/60205] No ABI warning for AVX-512

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

--- Comment #3 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Feb 18 18:55:35 2014
New Revision: 207851

URL: http://gcc.gnu.org/viewcvs?rev=207851&root=gcc&view=rev
Log:
    PR target/60205
    * config/i386/i386.h (struct ix86_args): Add warn_avx512f.
    * config/i386/i386.c (init_cumulative_args): Initialize warn_avx512f.
    (type_natural_mode): Warn ABI change when %zmm register is not
    available for AVX512F vector value passing.

testsuite/ChangeLog:

    PR target/60205
    * gcc.target/i386/pr60205-1.c: New test.
    * gcc.target/i386/pr60205-2.c: Ditto.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr60205-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr60205-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.h
    trunk/gcc/testsuite/ChangeLog

[Bug target/60205] No ABI warning for AVX-512

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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Subject: [Bug ipa/60266] New: [4.9 Regression] ICE: in ipa_get_parm_lattices, at ipa-cp.c:261 during LibreOffice LTO build
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`266

            Bug ID: 60266
           Summary: [4.9 Regression] ICE: in ipa_get_parm_lattices, at
                    ipa-cp.c:261 during LibreOffice LTO build
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: jamborm at gcc dot gnu.org

markus@x4 ~S % cat minimal
/var/tmp/libreoffice/workdir/CxxObject/dbaccess/source/ui/app/AppController.o
/var/tmp/libreoffice/workdir/CxxObject/dbaccess/source/ui/misc/TableCopyHelper.o
/var/tmp/libreoffice/workdir/CxxObject/dbaccess/source/ui/misc/uiservices.o
/var/tmp/libreoffice/workdir/CxxObject/dbaccess/source/ui/uno/copytablewizard.o

markus@x4 ~S % g++ -shared -flto -O2 @minimal
lto1: internal compiler error: in ipa_get_parm_lattices, at ipa-cp.c:261
0x50c7ac ipa_get_parm_lattices
        ../../gcc/gcc/ipa-cp.c:261
0xc41714 ipa_get_parm_lattices
        ../../gcc/gcc/ipa-cp.c:261
0xc41714 propagate_constants_accross_call
        ../../gcc/gcc/ipa-cp.c:1441
0xc44228 propagate_constants_topo
        ../../gcc/gcc/ipa-cp.c:2229
0xc44228 ipcp_propagate_stage
        ../../gcc/gcc/ipa-cp.c:2325
0xc44228 ipcp_driver
        ../../gcc/gcc/ipa-cp.c:3701
0xc44228 execute
        ../../gcc/gcc/ipa-cp.c:3800
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: /usr/x86_64-pc-linux-gnu/gcc-bin/4.9.0/g++ returned 1 exit status
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0/../../../../x86_64-pc-linux-gnu/bin/ld:
fatal error: lto-wrapper failed
collect2: error: ld returned 1 exit status

I will try to reduce this further tomorrow.

[Bug target/60205] No ABI warning for AVX-512

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60205

--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
*** Bug 59797 has been marked as a duplicate of this bug. ***
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59797

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Dup.

*** This bug has been marked as a duplicate of bug 60205 ***
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/57320] [4.9 Regression] Shrink-wrapping leaves unreachable blocks in the CFG
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW320

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This has been fixed by r204211 on the trunk, any reason to keep this PR open?

Note that Steven's patch has been approved, but never committed:
http://gcc.gnu.org/ml/gcc-patches/2013-05/msg01020.html