Regressions on trunk at revision 220434 vs revision 220391

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/guality/pr41447-1.c   -O2  execution test
FAIL: gcc.dg/guality/pr41447-1.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.dg/guality/pr41447-1.c   -O3 -fomit-frame-pointer  execution test
FAIL: gcc.dg/guality/pr41447-1.c   -O3 -g  execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  execution test
FAIL: gcc.dg/guality/pr41616-1.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  execution test

New passes: