Regressions on trunk at revision 244291 vs revision 244260

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

New failures:
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 133)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 133)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 138)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 138)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 140)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 140)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 141)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 141)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 145)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 145)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 182)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 182)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 193)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 193)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 195)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 195)
FAIL: gcc.dg/attr-alloc_size-4.c argument 2 (test for warnings, line 195)
FAIL: gcc.dg/attr-alloc_size-4.c argument 2 (test for warnings, line 195)
FAIL: gcc.dg/pr78973-2.c ilp32 (test for warnings, line 16)
FAIL: gcc.dg/pr78973-2.c ilp32 (test for warnings, line 16)
FAIL: gcc.dg/pr78973.c  (test for warnings, line 12)
FAIL: gcc.dg/pr78973.c  (test for warnings, line 12)
FAIL: gcc.dg/tree-ssa/flatten-3.c scan-assembler cycle[123][: \t\n]

New passes:
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 131)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 131)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 137)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 137)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 139)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 139)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 175)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 175)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 186)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 186)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 188)
FAIL: gcc.dg/attr-alloc_size-4.c  (test for warnings, line 188)
FAIL: gcc.dg/attr-alloc_size-4.c argument 2 (test for warnings, line 188)
FAIL: gcc.dg/attr-alloc_size-4.c argument 2 (test for warnings, line 188)