Chris Lattner 8f17c95cc2 Teach the dag combiner to turn a truncate/sign_extend pair into a sextinreg ... when the types match up. This allows the X86 backend to compile: sbyte %toggle_value(sbyte* %tmp.1) { %tmp.2 = load sbyte* %tmp.1 ret sbyte %tmp.2 } to this: _toggle_value: mov %EAX, DWORD PTR [%ESP + 4] movsx %EAX, BYTE PTR [%EAX] ret instead of this: _toggle_value: mov %EAX, DWORD PTR [%ESP + 4] movsx %EAX, BYTE PTR [%EAX] movsx %EAX, %AL ret noticed in Shootout/objinst. -Chris llvm-svn: 24630		2005-12-07 07:11:03 +00:00
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DAGCombiner.cpp	Teach the dag combiner to turn a truncate/sign_extend pair into a sextinreg	2005-12-07 07:11:03 +00:00
LegalizeDAG.cpp	Teach the SelectionDAG ISel how to turn ConstantPacked values into	2005-12-06 06:18:55 +00:00
Makefile	Change Library Names Not To Conflict With Others When Installed	2004-10-27 23:18:45 +00:00
ScheduleDAG.cpp	Support multiple ValueTypes per RegisterClass, needed for upcoming vector	2005-12-01 04:51:06 +00:00
SelectionDAG.cpp	Teach the SelectionDAG ISel how to turn ConstantPacked values into	2005-12-06 06:18:55 +00:00
SelectionDAGISel.cpp	Teach the SelectionDAG ISel how to turn ConstantPacked values into	2005-12-06 06:18:55 +00:00
SelectionDAGPrinter.cpp	Added an index field to GlobalAddressSDNode so it can represent X+12, etc.	2005-11-30 02:04:11 +00:00