Regressions on trunk at revision 200151 vs revision 200147

[H.J. Lu Intel64 LTO/FDO]

New failures:
FAIL: gcc.dg/guality/pr48437.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 14 i == 0
FAIL: gcc.dg/guality/pr48437.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 14 i == 0
FAIL: gcc.dg/guality/pr48437.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 14 i == 0
FAIL: gcc.dg/guality/pr48437.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 14 i == 0
FAIL: gcc.dg/lto/pr56297 c_lto_pr56297_0.o-c_lto_pr56297_1.o link,  -flto -fno-common  (internal compiler error)
FAIL: gcc.dg/lto/pr56297 c_lto_pr56297_0.o-c_lto_pr56297_1.o link,  -flto -fno-common  (internal compiler error)

New passes:
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++11  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++11  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++98  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++98  scan-tree-dump-times ivopts "PHI <[pb]" 1