On Linux/x86_64,
6ddb30f941a44bd528904558673ab35394565f08 is the first bad commit
commit 6ddb30f941a44bd528904558673ab35394565f08
Author: liuhongt <hongtao....@intel.com>
Date: Fri Aug 20 15:30:40 2021 +0800
Optimize (a & b) | (c & ~b) to vpternlog instruction.
caused
FAIL: gcc.target/i386/avx2-shiftqihi-constant-1.c scan-assembler-times
vpand[^\n]*%ymm 3
FAIL: gcc.target/i386/avx2-shiftqihi-constant-1.c scan-assembler-times
vpxor[^\n]*%ymm 1
FAIL: gcc.target/i386/sse2-shiftqihi-constant-1.c scan-assembler-times
pxor[^\n]*%xmm 1
with GCC configured with
To reproduce:
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx2-shiftqihi-constant-1.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/avx2-shiftqihi-constant-1.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/sse2-shiftqihi-constant-1.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/sse2-shiftqihi-constant-1.c
--target_board='unix{-m64\ -march=cascadelake}'"
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