[r11-1301 Regression] FAIL: gcc.target/i386/avx512bw-pr95488-1.c scan-assembler-times vpmullw[^\n]*zmm 2 on Linux/x86_64 (-m64 -march=cascadelake)

sunil.k.pandey skpandey@sc.intel.com
Sun Aug 30 02:01:51 GMT 2020


On Linux/x86_64,

54cdb2f5a5b01a482d7cbce30e7b738558eecf59 is the first bad commit
commit 54cdb2f5a5b01a482d7cbce30e7b738558eecf59
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed Jun 3 17:25:47 2020 +0800

    Optimize multiplication for V8QI,V16QI,V32QI under TARGET_AVX512BW.

caused

FAIL: gcc.target/i386/avx512bw-pr95488-1.c scan-assembler-times vpmovwb 2
FAIL: gcc.target/i386/avx512bw-pr95488-1.c scan-assembler-times vpmovzxbw 4
FAIL: gcc.target/i386/avx512bw-pr95488-1.c scan-assembler-times vpmullw[^\n]*zmm 2

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-1301/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/avx512bw-pr95488-1.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)


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