[Bug target/96856] New: [r11-571 Regression] FAIL: gcc.target/i386/pr92645-4.c scan-tree-dump-times optimized "VEC_PACK_TRUNC" 1

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96856

            Bug ID: 96856
           Summary: [r11-571 Regression] FAIL: gcc.target/i386/pr92645-4.c
                    scan-tree-dump-times optimized "VEC_PACK_TRUNC" 1
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: crazylht at gmail dot com
  Target Milestone: ---
            Target: x86_64-*-* i?86-*-*

On Linux/x86_64,

e740f3d73144abbca1ad98a04825c6bd63314a0b is the first bad commit commit
e740f3d73144abbca1ad98a04825c6bd63314a0b
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed May 20 15:53:14 2020 +0800

    Add missing vector truncmn2 expanders [PR92658]

caused

FAIL: gcc.target/i386/pr92645-4.c scan-tree-dump-times optimized
"BIT_FIELD_REF" 2
FAIL: gcc.target/i386/pr92645-4.c scan-tree-dump-times optimized
"VEC_PACK_TRUNC" 1

with GCC configured with

../../gcc/configure
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-571/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/pr92645-4.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)