On Linux/x86_64,
94de7e225c1fda079052c3f0725c926437d56c94 is the first bad commit
commit 94de7e225c1fda079052c3f0725c926437d56c94
Author: liuhongt <hongtao....@intel.com>
Date: Thu Apr 22 15:33:16 2021 +0800
Optimize __builtin_shuffle when it's used to zero the upper bits of the
dest. [PR target/94680]
caused
FAIL: gcc.target/i386/avx-pr94680.c scan-assembler-not pxor
FAIL: gcc.target/i386/avx-pr94680.c scan-assembler-times (?n)vmov[a-z0-9]*[
\\t]*%xmm[0-9] 12
with GCC configured with
../../gcc/configure
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-760/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/avx-pr94680.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx-pr94680.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)
