Regressions on trunk at revision 212932 vs revision 212909

[H.J. Lu ia32 Core i7]

New failures:
FAIL: gcc.dg/ira-shrinkwrap-prep-1.c scan-rtl-dump ira "Split live-range of register"
FAIL: gcc.dg/ira-shrinkwrap-prep-1.c scan-rtl-dump ira "Will split live ranges of parameters"
FAIL: gcc.dg/ira-shrinkwrap-prep-1.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"
FAIL: gcc.dg/ira-shrinkwrap-prep-2.c scan-rtl-dump ira "Split live-range of register"
FAIL: gcc.dg/ira-shrinkwrap-prep-2.c scan-rtl-dump ira "Will split live ranges of parameters"
FAIL: gcc.dg/ira-shrinkwrap-prep-2.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"
FAIL: gcc.dg/pr10474.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"

New passes:
FAIL: g++.dg/ipa/pr61160-3.C  -std=gnu++11 execution test
FAIL: g++.dg/ipa/pr61160-3.C  -std=gnu++1y execution test
FAIL: g++.dg/ipa/pr61160-3.C  -std=gnu++98 execution test
FAIL: libstdc++-prettyprinters/libfundts.cc print ab
FAIL: libstdc++-prettyprinters/libfundts.cc print ai
FAIL: libstdc++-prettyprinters/libfundts.cc print am
FAIL: libstdc++-prettyprinters/libfundts.cc print ap
FAIL: libstdc++-prettyprinters/libfundts.cc print as
FAIL: libstdc++-prettyprinters/libfundts.cc print as2