On Linux/x86_64,

af60b0ec79e9c5d7116122b185e44927aca5aa07 is the first bad commit
commit af60b0ec79e9c5d7116122b185e44927aca5aa07
Author: H.J. Lu <hjl.to...@gmail.com>
Date:   Fri Jan 1 05:30:34 2021 -0800

    x86: Cast to unsigned short first for _mm_extract_pi16

caused

FAIL: gcc.target/i386/sse2-mmx-pextrw.c execution test

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-6464/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/sse2-mmx-pextrw.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/sse2-mmx-pextrw.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/sse2-mmx-pextrw.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="i386.exp=gcc.target/i386/sse2-mmx-pextrw.c 
--target_board='unix{-m64\ -march=cascadelake}'"

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