Regressions on trunk at revision 238648 vs revision 238636

[H.J. Lu ia32 -fpic]

New failures:
FAIL: libstdc++-abi/abi_check

New passes:
FAIL: gcc.dg/tree-ssa/pr19210-1.c  (test for warnings, line 12)
FAIL: gcc.dg/tree-ssa/pr19210-1.c  (test for warnings, line 24)
FAIL: gcc.dg/tree-ssa/pr19210-1.c  (test for warnings, line 27)
FAIL: gcc.dg/tree-ssa/pr19210-1.c  (test for warnings, line 9)
FAIL: gcc.dg/tree-ssa/pr19210-2.c  (test for warnings, line 12)
FAIL: gcc.dg/tree-ssa/pr19210-2.c  (test for warnings, line 23)
FAIL: gcc.dg/tree-ssa/pr19210-2.c  (test for warnings, line 26)
FAIL: gcc.dg/tree-ssa/pr19210-2.c  (test for warnings, line 9)