Regressions on trunk at revision 240542 vs revision 240511

[H.J. Lu ia32]

New failures:
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c Glibc %p (test for warnings, line 108)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c (nil) (test for warnings, line 96)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1223)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1273)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1384)

New passes:
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1222)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1272)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c  (test for warnings, line 1383)