Regressions on master at commit r11-2915 vs commit r11-2898 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: gcc.dg/tree-ssa/scev-3.c scan-tree-dump-times ivopts "&a" 1
FAIL: gcc.dg/tree-ssa/scev-4.c scan-tree-dump-times ivopts "&a" 1
FAIL: gcc.dg/tree-ssa/scev-5.c scan-tree-dump-times ivopts "&a" 1
FAIL: g++.dg/tree-prof/indir-call-prof.C scan-tree-dump-times optimized "Function do_not_sanitize" 1

New passes:
FAIL: gcc.dg/tree-prof/crossmodule-indircall-1.c execution,    -g -DFOR_AUTOFDO_TESTING