[r12-5126 Regression] FAIL: gfortran.dg/do_subscript_3.f90 -O (test for excess errors) on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

992644c3511acd58248db784f1ac43e2f053ebcc is the first bad commit
commit 992644c3511acd58248db784f1ac43e2f053ebcc
Author: Jan Hubicka <jh@suse.cz>
Date:   Wed Nov 10 16:00:40 2021 +0100

    Extend modref by side-effect analysis

caused

FAIL: gfortran.dg/do_subscript_3.f90   -O  (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-5126/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="dg.exp=gfortran.dg/do_subscript_3.f90 --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/do_subscript_3.f90 --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/do_subscript_3.f90 --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/do_subscript_3.f90 --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)