[r12-3425 Regression] FAIL: gcc.target/i386/vect-rebuild.c scan-assembler-not unpck on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

60eec23b5eda0f350e572586eee738eab0804a74 is the first bad commit
commit 60eec23b5eda0f350e572586eee738eab0804a74
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed Sep 8 16:19:37 2021 +0800

    Optimize vec_extract for 256/512-bit vector when index exceeds the lower 128 bits.

caused

FAIL: gcc.target/i386/vect-rebuild.c scan-assembler-not unpck
FAIL: gcc.target/i386/vect-rebuild.c scan-assembler-times \tv?extractf128[ \t] 1

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-3425/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-rebuild.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/vect-rebuild.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)