[r11-4070 Regression] FAIL: gcc.dg/pr97488.c (test for excess errors) on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

2d2f4ffc97a8510e72a99ee106159aeae2627a42 is the first bad commit
commit 2d2f4ffc97a8510e72a99ee106159aeae2627a42
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Mon Oct 19 06:18:46 2020 -0400

    Gracefully handle right shifts larger than the precision.

caused

FAIL: gcc.dg/pr97488.c (test for excess errors)

with GCC configured with

Configured with: ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-4070/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=gcc.dg/pr97488.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr97488.c --target_board='unix{-m32\ -march=cascadelake}'"

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