[r15-2011 Regression] FAIL: gcc.target/i386/pr31985.c scan-assembler-times movl 4 on Linux/x86_64

[haochen.jiang via Gcc-regression]

On Linux/x86_64,

a6f551d079de1d151b272bcdd3d42316857c9d4e is the first bad commit
commit a6f551d079de1d151b272bcdd3d42316857c9d4e
Author: Jeff Law 
Date:   Fri Jul 12 13:11:33 2024 -0600

[PR rtl-optimization/115876] Fix one of two ubsan reported issues in new 
ext-dce.cc code

caused

FAIL: gcc.target/i386/ashldi3-1.c scan-assembler-times xorl 2
FAIL: gcc.target/i386/pr31985.c scan-assembler-times movl 4

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-2011/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/ashldi3-1.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/ashldi3-1.c --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr31985.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr31985.c --target_board='unix{-m32\ 
-march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
at haochen dot jiang at intel.com.)
(If you met problems with cascadelake related, disabling AVX512F in command 
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)

Re: [r15-2011 Regression] FAIL: gcc.target/i386/pr31985.c scan-assembler-times movl 4 on Linux/x86_64

[Andreas Schwab via Gcc-regression]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115876#c7

-- 
Andreas Schwab, SUSE Labs, sch...@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

Regressions on master at commit r15-2048 vs commit r15-2047 on Linux/i686

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-2048 vs commit r15-2047 on Linux/i686
New failures:

New passes:
FAIL: gcc.target/i386/ashldi3-1.c scan-assembler-times xorl 2

Regressions on native/master at commit r15-2051 vs commit r15-2047 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-2051 vs commit r15-2047 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.target/i386/ashldi3-1.c scan-assembler-times xorl 2
FAIL: gcc.target/i386/pr31985.c scan-assembler-times movl 4

Regressions on master at commit r15-2052 vs commit r15-2048 on Linux/i686

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-2052 vs commit r15-2048 on Linux/i686
New failures:

New passes:
FAIL: b2test_buildid
FAIL: b2test_buildidfull