On Linux/x86_64,

2f9529fc62bcd7e5796c5c8c11879c9ba2ca133f is the first bad commit
commit 2f9529fc62bcd7e5796c5c8c11879c9ba2ca133f
Author: Hongyu Wang <hongyu.w...@intel.com>
Date:   Thu Sep 23 13:52:16 2021 +0800

    AVX512FP16: Adjust builtin for mask complex fma

caused

FAIL: gcc.target/i386/avx512fp16-vfcmaddcsh-1a.c scan-assembler-times 
vblendvps[ 
\\t]+[^{\n]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+(?:\n|[
 \\t]+#) 2
FAIL: gcc.target/i386/avx512fp16-vfmaddcsh-1a.c scan-assembler-times vblendvps[ 
\\t]+[^{\n]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+[^\n\r]*%xmm[0-9]+(?:\n|[
 \\t]+#) 2

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-4387/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/avx512fp16-vfcmaddcsh-1a.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512fp16-vfcmaddcsh-1a.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512fp16-vfmaddcsh-1a.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512fp16-vfmaddcsh-1a.c 
--target_board='unix{-m64\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
at skpgkp2 at gmail dot com)

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