Regressions on trunk at revision 272518 vs revision 272500

[H.J. Lu (Intel64 -fpic -mcmodel=medium -mcmodel=large)]

New failures:
FAIL: gcc.dg/Warray-bounds-41.c  (test for warnings, line 17)
FAIL: gcc.dg/Warray-bounds-41.c  (test for warnings, line 17)

New passes:
FAIL: gcc.dg/Warray-bounds-41.c  (test for warnings, line 16)
FAIL: gcc.dg/Warray-bounds-41.c  (test for warnings, line 16)