Regressions on trunk at revision 247878 vs revision 247833

[H.J. Lu ia32 Core i7]

New failures:

New passes:
FAIL: gfortran.dg/allocatable_function_8.f90   -O0  execution test
FAIL: gfortran.dg/allocatable_function_8.f90   -O1  execution test
FAIL: gfortran.dg/allocatable_function_8.f90   -O2  execution test
FAIL: gfortran.dg/allocatable_function_8.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/allocatable_function_8.f90   -O3 -g  execution test
FAIL: gfortran.dg/allocatable_function_8.f90   -Os  execution test
FAIL: gfortran.dg/generic_20.f90   -O0  execution test
FAIL: gfortran.dg/generic_20.f90   -O1  execution test
FAIL: gfortran.dg/generic_20.f90   -O2  execution test
FAIL: gfortran.dg/generic_20.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/generic_20.f90   -O3 -g  execution test
FAIL: gfortran.dg/generic_20.f90   -Os  execution test
FAIL: gfortran.dg/matmul_6.f90   -O0  execution test
FAIL: gfortran.dg/matmul_bounds_5.f90   -O0  output pattern test
FAIL: gfortran.dg/matmul_bounds_6.f90   -O0  execution test
FAIL: gfortran.dg/matmul_bounds_6.f90   -O1  execution test
FAIL: gfortran.dg/matmul_bounds_6.f90   -O2  execution test
FAIL: gfortran.dg/matmul_bounds_6.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/matmul_bounds_6.f90   -O3 -g  execution test
FAIL: gfortran.dg/matmul_bounds_6.f90   -Os  execution test
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution,  -O0