Regressions on trunk at revision 247627 vs revision 247577

[H.J. Lu]

New failures:
FAIL: gcc.dg/guality/pr41616-1.c   -O3 -g  execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O3 -g  execution test
FAIL: gcc.dg/pr78138.c (test for excess errors)
FAIL: gcc.dg/pr78138.c (test for excess errors)
FAIL: gcc.dg/pr78138.c  (test for warnings, line 23)
FAIL: gcc.dg/pr78138.c  (test for warnings, line 23)
FAIL: gcc.dg/pr79214.c (test for excess errors)
FAIL: gcc.dg/pr79214.c (test for excess errors)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 25)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 25)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 30)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 30)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 35)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 35)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 40)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 40)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 45)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 45)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 52)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 52)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 59)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 59)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 66)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 66)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 73)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 73)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 80)
FAIL: gcc.dg/pr79214.c  (test for warnings, line 80)
FAIL: gcc.dg/pr79222.c (test for excess errors)
FAIL: gcc.dg/pr79222.c (test for excess errors)
FAIL: gcc.dg/pr79222.c  (test for warnings, line 12)
FAIL: gcc.dg/pr79222.c  (test for warnings, line 12)
FAIL: gcc.dg/pr79223.c (test for excess errors)
FAIL: gcc.dg/pr79223.c (test for excess errors)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 26)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 26)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 31)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 31)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 36)
FAIL: gcc.dg/pr79223.c  (test for warnings, line 36)
FAIL: gcc.dg/tree-ssa/builtins-folding-gimple-ub.c (test for excess errors)
FAIL: gcc.dg/tree-ssa/builtins-folding-gimple-ub.c (test for excess errors)
FAIL: gfortran.dg/alloc_comp_auto_array_2.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gfortran.dg/alloc_comp_auto_array_2.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/mvbits_7.f90   -O0   (test for warnings, line 28)
FAIL: gfortran.dg/mvbits_7.f90   -O0   (test for warnings, line 28)

New passes:
FAIL: gcc.dg/guality/pr54970.c   -Os  line 31 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 36 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 a[0] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 p[-2] == 4
FAIL: gcc.dg/guality/pr54970.c   -Os  line 45 q[-1] == 4
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40