Regressions on trunk at revision 158483 vs revision 158481

[H.J. Lu]

New failures:

New passes:
FAIL: Thread_Sleep_2 -O3 -findirect-dispatch output - source compiled test
FAIL: Thread_Sleep_2 -O3 output - source compiled test
FAIL: Thread_Sleep_2 -findirect-dispatch output - source compiled test
FAIL: Thread_Sleep_2 output - source compiled test
WARNING: program timed out.