[r14-9692 Regression] FAIL: gcc.target/i386/pr101950-2.c scan-assembler-times \txor[ql]\t 2 on Linux/x86_64

[r14-9692 Regression] FAIL: gcc.target/i386/pr101950-2.c scan-assembler-times \txor[ql]\t 2 on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

839bc42772ba7af66af3bd16efed4a69511312ae is the first bad commit
commit 839bc42772ba7af66af3bd16efed4a69511312ae
Author: Segher Boessenkool <segher@kernel.crashing.org>
Date:   Wed Mar 27 14:09:52 2024 +0000

    combine: Don't combine if I2 does not change

caused

FAIL: gcc.target/i386/pr101950-2.c scan-assembler-times \txor[ql]\t 2

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-9692/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/pr101950-2.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/pr101950-2.c --target_board='unix{-m64\ -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.)