Regressions on trunk at revision 241326 vs revision 241300

[H.J. Lu ia32 Core i7]

New failures:
FAIL: gcc.dg/Walloca-1.c (test for excess errors)
FAIL: gcc.dg/Walloca-1.c  (test for warnings, line 26)
FAIL: gcc.dg/Walloca-2.c note (test for warnings, line 34)
FAIL: gcc.dg/Walloca-2.c (test for excess errors)
FAIL: gcc.dg/Walloca-2.c  (test for warnings, line 34)

New passes:
FAIL: gcc.dg/torture/pr77937-1.c   -O0  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O0  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -O1  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O1  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -O2  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O2  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -O3 -g  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -O3 -g  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-1.c   -Os  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-1.c   -Os  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O0  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O0  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O1  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O1  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O2  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O2  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -O3 -g  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -O3 -g  (test for excess errors)
FAIL: gcc.dg/torture/pr77937-2.c   -Os  (internal compiler error)
FAIL: gcc.dg/torture/pr77937-2.c   -Os  (test for excess errors)