On Linux/x86_64,
94f275432f7ea4781ec7c05fa9d1d81ef6cb3fc1 is the first bad commit
commit 94f275432f7ea4781ec7c05fa9d1d81ef6cb3fc1
Author: Andrew Pinski <quic_apin...@quicinc.com>
Date: Thu Feb 20 16:09:05 2025 -0800
gimple-fold: Improve optimize_memcpy_to_memset to handle STRING_CST
[PR78408]
caused
FAIL: gcc.dg/pr78408-3.c scan-tree-dump-times forwprop1 "after previous" 1
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r16-22/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="dg.exp=gcc.dg/pr78408-3.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr78408-3.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.)
