Regressions on trunk at revision 200723 vs revision 200720

[H.J. Lu Intel64]

New failures:
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O2 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3 -fomit-frame-pointer 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
FAIL: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3 -g 
FAIL: gfortran.fortran-torture/execute/where_7.f90 execution,  -Os 
FAIL: libgomp.fortran/vla3.f90  -Os  execution test

New passes: