Evan Cheng 8b944d39b3 Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. ... e.g. orl $65536, 8(%rax) => orb $1, 10(%rax) Since narrowing is not always a win, e.g. i32 -> i16 is a loss on x86, dag combiner consults with the target before performing the optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72507 91177308-0d34-0410-b5e6-96231b3b80d8		2009-05-28 00:35:15 +00:00
..
CallingConvLower.cpp
CMakeLists.txt	Update for CMakeLists; untested, so tell me if there are issues.	2009-05-24 09:13:13 +00:00
DAGCombiner.cpp	Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code.	2009-05-28 00:35:15 +00:00
FastISel.cpp	Add a new codegen pass that normalizes dwarf exception handling	2009-05-22 20:36:31 +00:00
LegalizeDAG.cpp	Minor cleanups; add a better explanation for the issue with	2009-05-27 12:42:55 +00:00
LegalizeFloatTypes.cpp	Refactor the code to grab the low and high parts of a value	2009-04-25 17:55:53 +00:00
LegalizeIntegerTypes.cpp
LegalizeTypes.cpp	Put back a bit of expensive checking logic that	2009-05-16 04:14:29 +00:00
LegalizeTypes.h	Implement review feedback for vector shuffle work.	2009-04-29 05:20:52 +00:00
LegalizeTypesGeneric.cpp	Refactor the code to grab the low and high parts of a value	2009-04-25 17:55:53 +00:00
LegalizeVectorOps.cpp	Remove special cases for more opcodes.	2009-05-27 07:58:35 +00:00
LegalizeVectorTypes.cpp	Implement review feedback for vector shuffle work.	2009-04-29 05:20:52 +00:00
Makefile
ScheduleDAGFast.cpp	Instead of passing in an unsigned value for the optimization level, use an enum,	2009-04-29 23:29:43 +00:00
ScheduleDAGList.cpp	Instead of passing in an unsigned value for the optimization level, use an enum,	2009-04-29 23:29:43 +00:00
ScheduleDAGRRList.cpp	Instead of passing in an unsigned value for the optimization level, use an enum,	2009-04-29 23:29:43 +00:00
ScheduleDAGSDNodes.cpp
ScheduleDAGSDNodes.h
ScheduleDAGSDNodesEmit.cpp	Silence Release-Asserts warnings.	2009-05-18 16:43:04 +00:00
SelectionDAG.cpp	Make DBG_STOPPOINT nodes, and therefore DBG_LABEL labels, get a DebugLoc, so that it	2009-05-04 22:10:05 +00:00
SelectionDAGBuild.cpp	Add a new codegen pass that normalizes dwarf exception handling	2009-05-22 20:36:31 +00:00
SelectionDAGBuild.h	Temporarily revert r72191. It was causing an assert during llvm-gcc	2009-05-21 00:04:55 +00:00
SelectionDAGISel.cpp	Add a new step to legalization to legalize vector math operations. This	2009-05-23 12:35:30 +00:00
SelectionDAGPrinter.cpp
TargetLowering.cpp	Add a new codegen pass that normalizes dwarf exception handling	2009-05-22 20:36:31 +00:00