Regressions on trunk at revision 162385 vs revision 162372

[H.J. Lu ia64]

New failures:

New passes:
FAIL: g++.dg/debug/dwarf2/lineno-simple1.C scan-assembler _ZN1C3fooEv:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:6\\n
FAIL: g++.dg/debug/dwarf2/lineno-simple1.C scan-assembler _ZN1CC[12]Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:4\\n
FAIL: g++.dg/debug/dwarf2/lineno-simple1.C scan-assembler main:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:12\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgI3ArgEC[12]Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:34\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgI3ArgED0Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:34\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgI4FullEC[12]Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:21\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgI4FullED0Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:21\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgIP3ArgEC[12]Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:28\\n
FAIL: g++.dg/debug/dwarf2/pr44641.C scan-assembler _ZN12MisplacedDbgIP3ArgED0Ev:[^\\t]*(\\t.file[^\\t]*)?\\t# \\S*:28\\n