On Linux/x86_64,
acba8b3d8dec0124c8b3a7e112b3a784a5091214 is the first bad commit
commit acba8b3d8dec0124c8b3a7e112b3a784a5091214
Author: Kugan Vivekanandarajah <kvivekana...@nvidia.com>
Date: Thu Oct 31 07:23:10 2024 +1100
[PATCH] Fix SLP when ifcvt versioned loop is not vectorized
caused
FAIL: gcc.dg/vect/bb-slp-77.c -flto -ffat-lto-objects scan-tree-dump-times
slp1 "optimized: basic block" 1
FAIL: gcc.dg/vect/bb-slp-77.c scan-tree-dump-times slp1 "optimized: basic
block" 1
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-4787/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="vect.exp=gcc.dg/vect/bb-slp-77.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-77.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-77.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-77.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.)
