On Linux/x86_64,

fae0c626250563c1619cc10c6af18a0c4cae5a97 is the first bad commit
commit fae0c626250563c1619cc10c6af18a0c4cae5a97
Author: Andrew Pinski <[email protected]>
Date:   Sat Dec 6 01:11:29 2025 -0800

    final_cleanup: Call make_forwarders_with_degenerate_phis [PR46555]

caused

FAIL: gcc.target/i386/pr90178.c scan-assembler-times xorl[\\t ]*\\%eax,[\\t 
]*%eax 1

with GCC configured with

../../gcc/configure 
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-5975/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/pr90178.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr90178.c --target_board='unix{-m32\ 
-march=cascadelake}'"

(Please directly reply to this email for question about this report.)
(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.)

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