On Linux/x86_64,
dcb9af06212e8bb36e84a1b8498c625c29abeb6f is the first bad commit
commit dcb9af06212e8bb36e84a1b8498c625c29abeb6f
Author: Gwenole Beauchesne <gb.de...@gmail.com>
Date: Mon Jun 2 14:44:55 2025 -0700
c/c++: Handle '#pragma GCC target optimize' early [PR48026]
caused
FAIL: gcc.target/i386/vect-pragma-target-1.c scan-assembler-times
vpaddw.+zmm[0-9]+ 1
FAIL: g++.target/i386/vect-pragma-target-1.C -std=gnu++17
scan-assembler-times vpaddw.+zmm[0-9]+ 1
FAIL: g++.target/i386/vect-pragma-target-1.C -std=gnu++26
scan-assembler-times vpaddw.+zmm[0-9]+ 1
FAIL: g++.target/i386/vect-pragma-target-1.C -std=gnu++98
scan-assembler-times vpaddw.+zmm[0-9]+ 1
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-1429/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-pragma-target-1.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-pragma-target-1.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=g++.target/i386/vect-pragma-target-1.C
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=g++.target/i386/vect-pragma-target-1.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.)
