Regressions on trunk at revision 194112 vs revision 194082

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

New failures:

New passes:
FAIL: gcc.dg/guality/pr54519-5.c  -O2  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-5.c  -O3 -fomit-frame-pointer  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-5.c  -O3 -g  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-5.c  -Os  line 17 y == 25
FAIL: gfortran.dg/reassoc_4.f  -O   scan-tree-dump-times reassoc1 "[0-9] \\* " 22
FAIL: gfortran.dg/reassoc_4.f  -O   scan-tree-dump-times reassoc1 "[0-9] \\* " 22