[r13-8480 Regression] FAIL: gcc.dg/tree-ssa/andnot-2.c scan-tree-dump-not forwprop3 "_expr" on Linux/x86_64

[r13-8480 Regression] FAIL: gcc.dg/tree-ssa/andnot-2.c scan-tree-dump-not forwprop3 "_expr" on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

a9a425df628ab80374cc6a132d39e470bc78c8bc is the first bad commit
commit a9a425df628ab80374cc6a132d39e470bc78c8bc
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Feb 23 16:06:05 2024 +0100

    middle-end/114070 - folding breaking VEC_COND expansion

caused

FAIL: gcc.dg/tree-ssa/andnot-2.c scan-tree-dump-not forwprop3 "_expr"

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/gcc-13/releases/gcc-13/r13-8480/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="tree-ssa.exp=gcc.dg/tree-ssa/andnot-2.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/andnot-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.)