Regressions on trunk at revision 231478 vs revision 231452

[Bill Seurer]

New failures:
FAIL: gcc.c-torture/execute/alias-2.c   -O1  execution test
FAIL: gcc.c-torture/execute/alias-2.c   -O2  execution test
FAIL: gcc.c-torture/execute/alias-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
FAIL: gcc.c-torture/execute/alias-2.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  execution test
FAIL: gcc.c-torture/execute/alias-2.c   -O3 -g  execution test
FAIL: gcc.c-torture/execute/alias-2.c   -Os  execution test
FAIL: runtime

New passes:
FAIL: gcc.dg/tree-ssa/leaf.c scan-tree-dump-times optimized "return 9" 1