Simon Pilgrim 6ddf645b77 [DAGCombine] Permit combining of shuffles of equivalent splat BUILD_VECTORs ...

combineShuffleOfScalars is very conservative about shuffled BUILD_VECTORs that can be combined together.

This patch adds one additional case - if both BUILD_VECTORs represent splats of the same scalar value but with different UNDEF elements, then we should create a single splat BUILD_VECTOR, sharing only the UNDEF elements defined by the shuffle mask.

Differential Revision: https://reviews.llvm.org/D38696

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316331 91177308-0d34-0410-b5e6-96231b3b80d8

2017-10-23 15:48:08 +00:00

..

CMakeLists.txt

Remove trailing whitespace to trigger re-cmaking

2017-10-02 21:54:38 +00:00

DAGCombiner.cpp

[DAGCombine] Permit combining of shuffles of equivalent splat BUILD_VECTORs

2017-10-23 15:48:08 +00:00

FastISel.cpp

Minor refactoring regarding Cast::isNoopCast(), NFC

2017-10-05 07:07:09 +00:00

FunctionLoweringInfo.cpp

ISel: Fix FastISel of swifterror values

2017-06-15 17:34:42 +00:00

InstrEmitter.cpp

Add llvm.codeview.annotation to implement MSVC __annotation

2017-09-05 20:14:58 +00:00

InstrEmitter.h

Pass DebugLoc and SDLoc by const ref.

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

LegalizeDAG.cpp

Implement custom lowering for ISD::CTTZ_ZERO_UNDEF and ISD::CTTZ.

2017-10-12 19:37:14 +00:00

LegalizeFloatTypes.cpp

[legalize-types] Clean up softening machinery.

2017-07-04 01:08:55 +00:00

LegalizeIntegerTypes.cpp

ISel type legalizer: debug messages. NFC.

2017-10-16 14:07:30 +00:00

LegalizeTypes.cpp

ISel type legalizer: debug messages. NFC.

2017-10-16 14:07:30 +00:00

LegalizeTypes.h

[SelectionDAG] Teach the vector-types operand scalarizer about SETCC

2017-08-17 08:06:36 +00:00

LegalizeTypesGeneric.cpp

[legalize-types] Clean up softening machinery.

2017-07-04 01:08:55 +00:00

LegalizeVectorOps.cpp

[CodeGen] Fix some Clang-tidy modernize-use-bool-literals and Include What You Use warnings; other minor fixes (NFC).

2017-09-21 23:20:16 +00:00

LegalizeVectorTypes.cpp

Untabify.

2017-10-18 13:31:28 +00:00

LLVMBuild.txt

LLVMBuild: Remove trailing newline, which irked me.

2011-12-12 19:48:00 +00:00

ResourcePriorityQueue.cpp

Refactoring with range-based for, NFC

2017-05-04 13:35:17 +00:00

ScheduleDAGFast.cpp

Sort the remaining #include lines in include/... and lib/....

2017-06-06 11:49:48 +00:00

ScheduleDAGRRList.cpp

Reverting r315590; it did not include changes for llvm-tblgen, which is causing link errors for several people.

2017-10-15 14:32:27 +00:00

ScheduleDAGSDNodes.cpp

Reverting r315590; it did not include changes for llvm-tblgen, which is causing link errors for several people.

2017-10-15 14:32:27 +00:00

ScheduleDAGSDNodes.h

[Target] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

2017-01-11 01:45:03 +00:00

ScheduleDAGVLIW.cpp

Sort the remaining #include lines in include/... and lib/....

2017-06-06 11:49:48 +00:00

SDNodeDbgValue.h

[Debug info] Transfer DI to fragment expressions for split integer values.

2017-08-18 18:07:00 +00:00

SelectionDAG.cpp

[SelectionDAG] Use dyn_cast without cast.

2017-10-21 05:37:10 +00:00

SelectionDAGAddressAnalysis.cpp

[CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

2017-09-13 21:15:20 +00:00

SelectionDAGBuilder.cpp

[TargetLowering] Correctly track NumFixedArgs field of CallLoweringInfo

2017-10-11 13:48:45 +00:00

SelectionDAGBuilder.h

[CodeGen] Fix some Clang-tidy modernize-use-default-member-init and Include What You Use warnings; other minor fixes (NFC).

2017-09-27 23:26:01 +00:00

SelectionDAGDumper.cpp

Reverting r315590; it did not include changes for llvm-tblgen, which is causing link errors for several people.

2017-10-15 14:32:27 +00:00

SelectionDAGISel.cpp

Add iterator range MachineRegisterInfo::liveins(), adopt users, NFC

2017-10-16 19:08:41 +00:00

SelectionDAGPrinter.cpp

Sort the remaining #include lines in include/... and lib/....

2017-06-06 11:49:48 +00:00

SelectionDAGTargetInfo.cpp

[CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

2017-09-13 21:15:20 +00:00

StatepointLowering.cpp

[CodeGen] Fix some Clang-tidy modernize-use-default-member-init and Include What You Use warnings; other minor fixes (NFC).

2017-09-27 23:26:01 +00:00

StatepointLowering.h

[CodeGen] Fix some Clang-tidy modernize-use-default-member-init and Include What You Use warnings; other minor fixes (NFC).

2017-09-27 23:26:01 +00:00

TargetLowering.cpp

[SelectionDAG] Don't subject ISD:Constant to the depth limit in TargetLowering::SimplifyDemandedBits.

2017-10-21 02:27:19 +00:00