Regressions on trunk at revision 177599 vs revision 177590

[H.J. Lu ia32]

New failures:

New passes:
FAIL: PR3096 -O3 -findirect-dispatch execution - source compiled test
FAIL: PR3096 -O3 execution - source compiled test
FAIL: PR3096 -findirect-dispatch execution - source compiled test
FAIL: PR3096 execution - source compiled test
FAIL: md5test -O3 -findirect-dispatch execution - source compiled test
FAIL: md5test -O3 execution - source compiled test
FAIL: md5test -findirect-dispatch execution - source compiled test
FAIL: md5test execution - source compiled test
FAIL: pr21785 -O3 -findirect-dispatch execution - source compiled test
FAIL: pr21785 -O3 execution - source compiled test
FAIL: pr21785 -findirect-dispatch execution - source compiled test
FAIL: pr21785 execution - source compiled test
FAIL: shatest -O3 -findirect-dispatch execution - source compiled test
FAIL: shatest -O3 execution - source compiled test
FAIL: shatest -findirect-dispatch execution - source compiled test
FAIL: shatest execution - source compiled test