Regressions on trunk at revision 181189 vs revision 181155

[H.J. Lu Intel64 Core 2/i7]

New failures:
FAIL: g++.dg/tm/pr45940-3.C (internal compiler error)
FAIL: g++.dg/tm/pr45940-3.C (test for excess errors)
FAIL: g++.dg/tm/pr45940-4.C (internal compiler error)
FAIL: g++.dg/tm/pr45940-4.C (test for excess errors)
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f11: va_list escapes 0, needs to save (3|12|24) GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f12: va_list escapes 0, needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f13: va_list escapes 0, needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f14: va_list escapes 0, needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f1: va_list escapes 0, needs to save 0 GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f2: va_list escapes 0, needs to save [148] GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f3: va_list escapes 0, needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f6: va_list escapes 0, needs to save (3|12|24) GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-4.c scan-tree-dump stdarg "f3: va_list escapes 0, needs to save [148] GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-4.c scan-tree-dump stdarg "f4: va_list escapes 0, needs to save [148] GPR units"
FAIL: libgomp.graphite/force-parallel-7.c execution test
FAIL: libgomp.graphite/force-parallel-7.c execution test
FAIL: libgomp.graphite/force-parallel-8.c execution test
FAIL: libgomp.graphite/force-parallel-8.c execution test

New passes: