Regressions on trunk at revision 205486 vs revision 205484

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

New failures:
FAIL: 22_locale/locale/cons/12438.cc execution test
FAIL: 22_locale/locale/cons/12438.cc execution test
FAIL: 30_threads/async/async.cc execution test
FAIL: gcc.dg/tree-ssa/alias-25.c scan-tree-dump-not optimized "= 42"
FAIL: gcc.dg/tree-ssa/alias-25.c scan-tree-dump-not optimized "= 42"
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O1  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O1  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O2  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O2  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O3 -fomit-frame-pointer  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O3 -fomit-frame-pointer  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O3 -g  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -O3 -g  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -Os  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(
FAIL: g++.dg/asan/deep-stack-uaf-1.C  -Os  output pattern test, is , should match ERROR: AddressSanitizer:? heap-use-after-free on address.*(

New passes: