Regressions on lto at revision 147280 vs revision 146828

[H.J. Lu ia64]

New failures:
FAIL: gcc.c-torture/execute/20030501-1.c execution,  -O1 -flto 
FAIL: gcc.c-torture/execute/920612-2.c execution,  -O1 -flto 
FAIL: gcc.c-torture/execute/921017-1.c execution,  -O1 -flto 
FAIL: gcc.c-torture/execute/nest-align-1.c execution,  -O1 -flto 
FAIL: gcc.c-torture/execute/nestfunc-3.c execution,  -O1 -flto 
FAIL: gcc.c-torture/execute/nestfunc-7.c execution,  -O1 -flto 
FAIL: gcc.dg/autopar/parallelization-1.c scan-tree-dump-times optimized "loopfn" 5
FAIL: gcc.dg/lto/20090116 c_lto_20090116_0.o-c_lto_20090116_0.o link,  (internal compiler error)
FAIL: gcc.dg/lto/20090120 c_lto_20090120_0.o-c_lto_20090120_0.o link,  (internal compiler error)
FAIL: gcc.dg/pr34989-1.c (internal compiler error)
FAIL: gcc.dg/pr34989-1.c (test for excess errors)
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (internal compiler error)
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (test for excess errors)
FAIL: gcc.dg/torture/pr26565.c  -O1 -flto  execution test
FAIL: gcc.dg/torture/pr26565.c  -O2 -flto  execution test
FAIL: gcc.dg/torture/pr26565.c  -O2 -fwhopr  execution test
FAIL: gcc.dg/torture/pr26565.c  -O3 -flto -fomit-frame-pointer  execution test
FAIL: gcc.dg/torture/pr26565.c  -O3 -g  execution test
FAIL: gcc.dg/torture/pr26565.c  -Os -flto  execution test
FAIL: libgomp.c++/task-4.C  -O  (internal compiler error)
FAIL: libgomp.c++/task-4.C  -O  (test for excess errors)

New passes:
FAIL: gcc.c-torture/execute/20030501-1.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/920612-2.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/921017-1.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/nest-align-1.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/nestfunc-3.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/nestfunc-7.c compilation,  -O1 -flto  (internal compiler error)
FAIL: gcc.dg/autopar/parallelization-1.c scan-tree-dump-times final_cleanup "loopfn" 5
FAIL: gcc.dg/vect/vect-35.c scan-tree-dump-times vect "vectorized 2 loops" 1