[r10-8599 Regression] FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vmovdq[au]8[\t ] 6 on Linux/x86_64 (-m64 -march=cascadelake)

sunil.k.pandey skpandey@sc.intel.com
Sun Aug 30 18:46:08 GMT 2020


On Linux/x86_64,

f098bc87dcae5646d11a351cfb55d0e1124c7f60 is the first bad commit
commit f098bc87dcae5646d11a351cfb55d0e1124c7f60
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Jul 20 10:13:58 2020 +0800

    Using UNSPEC for vector compare to mask register.

caused

FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vmovdq[au]16[\t ] 6
FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vmovdq[au]32[\t ] 6
FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vmovdq[au]64[\t ] 6
FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vmovdq[au]8[\t ] 6
FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vpcmp[bwdq][\t ] 4
FAIL: gcc.target/i386/pr92865-1.c scan-assembler-times vpcmpu[bwdq][\t ] 4

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-10/releases/gcc-10/r10-8599/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/pr92865-1.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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