Simon Pilgrim 820f87a72d [SelectionDAG] Optimization of BITREVERSE legalization for power-of-2 integer scalar/vector types ...

An extension of D19978, this patch replaces the default BITREVERSE evaluation of individual bit masks+shifts with block mask+shifts when we have integer elements of power-of-2 bits in size.

After calling BSWAP to reverse the order of the constituent bytes (which typically follows a similar approach), every neighbouring 4-bits, 2-bits and finally 1-bit pairs are masked off and swapped over with shifts.

In doing so we can significantly reduce the number of operations required.

Differential Revision: https://reviews.llvm.org/D21578

llvm-svn: 276432

2016-07-22 16:46:25 +00:00

..

CMakeLists.txt

Rename TargetSelectionDAGInfo into SelectionDAGTargetInfo and move it to CodeGen/

2016-01-27 16:32:26 +00:00

DAGCombiner.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

FastISel.cpp

[FastISel] Ignore @llvm.assume.

2016-07-22 12:54:53 +00:00

FunctionLoweringInfo.cpp

Swift Calling Convention: swifterror target-independent change.

2016-04-05 18:13:16 +00:00

InstrEmitter.cpp

CodeGen: Use MachineInstr& in TargetLowering, NFC

2016-06-30 22:52:52 +00:00

InstrEmitter.h

Pass DebugLoc and SDLoc by const ref.

2016-06-12 15:39:02 +00:00

LegalizeDAG.cpp

[SelectionDAG] Optimization of BITREVERSE legalization for power-of-2 integer scalar/vector types

2016-07-22 16:46:25 +00:00

LegalizeFloatTypes.cpp

[X86] Accept SELECT op code for x86-64 fp128 type

2016-07-18 17:20:09 +00:00

LegalizeIntegerTypes.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

LegalizeTypes.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

LegalizeTypes.h

fix documentation comments; NFC

2016-07-09 18:52:07 +00:00

LegalizeTypesGeneric.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

LegalizeVectorOps.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

LegalizeVectorTypes.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

LLVMBuild.txt

…

ResourcePriorityQueue.cpp

Replace silly uses of 'signed' with 'int'

2016-06-21 05:10:24 +00:00

ScheduleDAGFast.cpp

Replace uint16_t with the MCPhysReg typedef in many places. A lot of physical register arrays already use this typedef.

2015-12-05 07:13:35 +00:00

ScheduleDAGRRList.cpp

rangify; NFCI

2016-02-03 22:44:14 +00:00

ScheduleDAGSDNodes.cpp

SelectionDAG: Avoid implicit iterator conversions in ScheduleDAGSDNodes, NFC

2016-07-08 19:07:09 +00:00

ScheduleDAGSDNodes.h

[SelectionDAG] Remove dead code. NFC.

2015-10-15 17:54:06 +00:00

ScheduleDAGVLIW.cpp

Use 'override/final' instead of 'virtual' for overridden methods

2015-04-11 02:11:45 +00:00

SDNodeDbgValue.h

Apply clang-tidy's misc-move-constructor-init throughout LLVM.

2016-05-27 14:27:24 +00:00

SelectionDAG.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

SelectionDAGBuilder.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

SelectionDAGBuilder.h

Reverting r275284 due to platform-specific test failures

2016-07-13 19:09:16 +00:00

SelectionDAGDumper.cpp

Indent consistently.

2016-06-19 12:37:52 +00:00

SelectionDAGISel.cpp

[inlineasm] Propagate operand constraints to the backend

2016-07-18 13:17:31 +00:00

SelectionDAGPrinter.cpp

Make the SelectionDAG graph printer use SDNode::PersistentId labels.

2015-10-27 23:09:03 +00:00

SelectionDAGTargetInfo.cpp

Rename TargetSelectionDAGInfo into SelectionDAGTargetInfo and move it to CodeGen/

2016-01-27 16:32:26 +00:00

StatepointLowering.cpp

[SelectionDAG] Get rid of bool parameters in SelectionDAG::getLoad, getStore, and friends.

2016-07-15 18:27:10 +00:00

StatepointLowering.h

[NFC] Header cleanup

2016-04-18 09:17:29 +00:00

TargetLowering.cpp

AVX-512: Fixed BT instruction selection.

2016-07-19 07:14:21 +00:00