Regressions on trunk at revision 232463 vs revision 232451

[Bill Seurer]

New failures:

New passes:
FAIL: gcc.target/powerpc/recip-1.c scan-assembler-times fmsub 2
FAIL: gcc.target/powerpc/recip-1.c scan-assembler-times fmul 6
FAIL: gcc.target/powerpc/recip-2.c scan-assembler-times fmsubs 1
FAIL: gcc.target/powerpc/recip-2.c scan-assembler-times fmuls 6
FAIL: gcc.target/powerpc/recip-3.c scan-assembler-times xsmsub.dp|fmsub  1
FAIL: gcc.target/powerpc/recip-3.c scan-assembler-times xsmsub.sp|fmsubs 1
FAIL: gcc.target/powerpc/recip-3.c scan-assembler-times xsmuldp|fmul  4
FAIL: gcc.target/powerpc/recip-4.c scan-assembler-times xvmsub.dp 1
FAIL: gcc.target/powerpc/recip-4.c scan-assembler-times xvmsub.sp 1
FAIL: gcc.target/powerpc/recip-4.c scan-assembler-times xvmuldp 4
FAIL: gcc.target/powerpc/recip-sqrtf.c scan-assembler-times frsqrtes 3
FAIL: tr1/2_general_utilities/shared_ptr/thread/default_weaktoshared.cc execution test