Regressions on trunk at revision 190339 vs revision 190336

[H.J. Lu Intel64 Core 2/i7]

New failures:
FAIL: gcc.dg/guality/pr54200.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 20 z == 3
FAIL: gcc.dg/guality/pr54200.c  -Os  line 20 z == 3
FAIL: gcc.target/i386/pad-10.c scan-assembler-not nop

New passes: