On Linux/x86_64,
a71f90c5a7ae2942083921033cb23dcd63e70525 is the first bad commit
commit a71f90c5a7ae2942083921033cb23dcd63e70525
Author: Levy Hsu <ad...@levyhsu.com>
Date: Thu May 9 16:50:56 2024 +0800
x86: Add 3-instruction subroutine vector shift for V16QI in
ix86_expand_vec_perm_const_1 [PR107563]
caused
FAIL: g++.target/i386/pr107563-a.C scan-assembler-times por 1
FAIL: g++.target/i386/pr107563-a.C scan-assembler-times psllw 1
FAIL: g++.target/i386/pr107563-a.C scan-assembler-times psraw 1
FAIL: g++.target/i386/pr107563-b.C scan-assembler-times por 1
FAIL: g++.target/i386/pr107563-b.C scan-assembler-times psllw 1
FAIL: g++.target/i386/pr107563-b.C scan-assembler-times psrlw 1
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-499/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=g++.target/i386/pr107563-a.C --target_board='unix{-m64\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=g++.target/i386/pr107563-b.C --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=g++.target/i386/pr107563-b.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.)
