[r15-3356 Regression] FAIL: gcc.target/i386/avx10_2-bf-vector-fma-1.c (test for excess errors) on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

6d294fb8ac9baf2624446deaa4c995b7a7719823 is the first bad commit
commit 6d294fb8ac9baf2624446deaa4c995b7a7719823
Author: Levy Hsu <admin@levyhsu.com>
Date:   Mon Sep 2 10:24:46 2024 +0800

    i386: Support vectorized BF16 FMA with AVX10.2 instructions

caused

FAIL: gcc.target/i386/avx10_2-bf-vector-fma-1.c (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-3356/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/avx10_2-bf-vector-fma-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/avx10_2-bf-vector-fma-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.)