On Linux/x86_64,
08b8341f209be7c7e301853bdbbcad4f8e1695f5 is the first bad commit
commit 08b8341f209be7c7e301853bdbbcad4f8e1695f5
Author: Konstantinos Eleftheriou <konstantinos.elefther...@vrull.eu>
Date: Thu Sep 5 15:59:59 2024 +0200
match: Change (A * B) + (-C) to (B - C/A) * A, if C multiple of A [PR109393]
caused
FAIL: gcc.dg/pr109393.c scan-tree-dump-times optimized "return 1;" 3
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-3862/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/pr109393.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr109393.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.)
