On Linux/x86_64,
af7b84d0d02ffa23e4843e9555a888c9e80bd9b5 is the first bad commit
commit af7b84d0d02ffa23e4843e9555a888c9e80bd9b5
Author: Richard Biener <[email protected]>
Date: Wed May 14 16:45:08 2025 +0200
Enhance -fopt-info-vec vectorized loop diagnostic
caused
FAIL: gcc.target/i386/vect-epilogues-4.c scan-tree-dump-times vect "loop
vectorized using 64 byte vectors" 2
FAIL: gcc.target/i386/vect-epilogues-5.c scan-tree-dump-times vect "loop
vectorized using 64 byte vectors" 2
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r16-645/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/vect-epilogues-4.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-4.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-4.c
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-4.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-5.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-5.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-5.c
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-epilogues-5.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.)
