[r16-2649 Regression] FAIL: gcc.target/i386/pr82524.c scan-assembler [ \t]notb on Linux/x86_64

"haochen.jiang" <[email protected]>
Newsgroups gmane.comp.gcc.patches,gmane.comp.gcc.regression
Message-ID <[email protected]>
On Linux/x86_64,

0340177d54d08b6375391ba164a878e6a596275e is the first bad commit
commit 0340177d54d08b6375391ba164a878e6a596275e
Author: Andrew Pinski <[email protected]>
Date:   Tue Jul 29 21:49:16 2025 -0700

    simplify-rtx: Add `(subreg (not a))` simplification for word_mode [PR121308]

caused

FAIL: gcc.target/i386/pr82524.c scan-assembler-not mov[sz]bl
FAIL: gcc.target/i386/pr82524.c scan-assembler [ \t]notb

with GCC configured with

../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-2649/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/pr82524.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/pr82524.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.)
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