Regressions on trunk at revision 247984 vs revision 247836

[H.J. Lu Intel64 LTO/FDO]

New failures:
FAIL: gcc.dg/guality/pr54693-2.c   -Os  line 21 i == v + 1
FAIL: gcc.target/i386/cadd.c scan-assembler sbb

New passes:
FAIL: gcc.dg/guality/pr54693-2.c   -Os  line 21 x == 10 - i
FAIL: gcc.dg/guality/pr54693-2.c   -Os  line 21 y == 20 - 2 * i
FAIL: gcc.target/i386/pr22152.c scan-assembler-times movq[ \\t]+[^\n]*%mm 1
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