[r12-3899 Regression] FAIL: gcc.dg/strlenopt-13.c scan-tree-dump-times strlen1 "memcpy \\(" 7 on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

d06dc8a2c73735e9496f434787ba4c93ceee5eea is the first bad commit
commit d06dc8a2c73735e9496f434787ba4c93ceee5eea
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Sep 27 13:36:12 2021 +0200

    middle-end/102450 - avoid type_for_size for non-existing modes

caused

FAIL: gcc.dg/out-of-bounds-1.c  (test for warnings, line 12)
FAIL: gcc.dg/pr78408-1.c scan-tree-dump-times fab1 "after previous" 17
FAIL: gcc.dg/strlenopt-13.c scan-tree-dump-times strlen1 "memcpy \\(" 7

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-3899/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/out-of-bounds-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/out-of-bounds-1.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr78408-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr78408-1.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/strlenopt-13.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/strlenopt-13.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)