[r12-382 Regression] FAIL: gcc.dg/tree-ssa/ssa-dse-26.c scan-tree-dump-times dse1 "Deleted dead store: y = " 1 on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

ed3c43224cc4e378dbab066122bc63536ccb1276 is the first bad commit
commit ed3c43224cc4e378dbab066122bc63536ccb1276
Author: Richard Biener <rguenther@suse.de>
Date:   Mon May 3 09:17:55 2021 +0200

    Perform reverse program order walk for GIMPLE DSE

caused

FAIL: gcc.dg/tree-ssa/ssa-dse-26.c scan-tree-dump-times dse1 "Deleted dead store: x = " 1
FAIL: gcc.dg/tree-ssa/ssa-dse-26.c scan-tree-dump-times dse1 "Deleted dead store: y = " 1

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-382/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="tree-ssa.exp=gcc.dg/tree-ssa/ssa-dse-26.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ssa-dse-26.c --target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)