Regressions on trunk at revision 193911 vs revision 193907

[H.J. Lu Intel64]

New failures:
FAIL: boehm-gc.c/gctest.c -O2 execution test

New passes:
FAIL: gcc.dg/guality/pr54519-3.c  -O1  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -O1  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-3.c  -O2  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -O2  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-3.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-3.c  -O3 -fomit-frame-pointer  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -O3 -fomit-frame-pointer  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-3.c  -O3 -g  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -O3 -g  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-3.c  -Os  line 20 z == 6
FAIL: gcc.dg/guality/pr54519-3.c  -Os  line 23 z == 8
FAIL: gcc.dg/guality/pr54519-4.c  -O1  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-4.c  -O2  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-4.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-4.c  -O3 -fomit-frame-pointer  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-4.c  -O3 -g  line 17 y == 25
FAIL: gcc.dg/guality/pr54519-4.c  -Os  line 17 y == 25