Simon Pilgrim db716b5543 [TargetLowering] Add UNDEF folding to SimplifyDemandedVectorElts ...

If all the demanded elements of the SimplifyDemandedVectorElts are known to be UNDEF, we can simplify to an ISD::UNDEF node.

Zero constant folding will be handled in a future patch - its a little trickier as we often have bitcasted zero values.

Differential Revision: https://reviews.llvm.org/D55511

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348784 91177308-0d34-0410-b5e6-96231b3b80d8

2018-12-10 18:29:46 +00:00

..

CMakeLists.txt

Remove trailing whitespace to trigger re-cmaking

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

DAGCombiner.cpp

[DAGCombiner] Remove unnecessary recursive DAGCombiner::visitINSERT_SUBVECTOR call.

2018-12-10 18:18:50 +00:00

FastISel.cpp

Add support for llvm.is.constant intrinsic (PR4898)

2018-11-07 15:24:12 +00:00

FunctionLoweringInfo.cpp

AMDGPU: Fix various issues around the VirtReg2Value mapping

2018-11-30 22:55:29 +00:00

InstrEmitter.cpp

[DebugInfo] Don't drop dbg.value's of nullptr

2018-12-10 12:04:08 +00:00

InstrEmitter.h

[DebugInfo] Convert intrinsic llvm.dbg.label to MachineInstr.

2018-05-09 02:41:08 +00:00

LegalizeDAG.cpp

[SelectionDAG] Initial support for FSHL/FSHR funnel shift opcodes (PR39467)

2018-12-05 11:12:12 +00:00

LegalizeFloatTypes.cpp

[NFC] Rename minnan and maxnan to minimum and maximum

2018-10-24 22:49:55 +00:00

LegalizeIntegerTypes.cpp

[SelectionDAG] Support result type promotion for FLT_ROUNDS_

2018-11-30 13:18:33 +00:00

LegalizeTypes.cpp

[DAG] Don't map a TableId to itself in the ReplacedValues map

2018-06-20 16:06:09 +00:00

LegalizeTypes.h

[SelectionDAG] Support result type promotion for FLT_ROUNDS_

2018-11-30 13:18:33 +00:00

LegalizeTypesGeneric.cpp

[LegalizeTypes] Fix bad indentation. NFC

2018-09-23 21:17:55 +00:00

LegalizeVectorOps.cpp

[SelectionDAG] Initial support for FSHL/FSHR funnel shift opcodes (PR39467)

2018-12-05 11:12:12 +00:00

LegalizeVectorTypes.cpp

[LegalizeVectorTypes][X86][ARM][AArch64][PowerPC] Don't use SplitVecOp_TruncateHelper for FP_TO_SINT/UINT.

2018-11-26 21:12:39 +00:00

LLVMBuild.txt

LLVMBuild: Remove trailing newline, which irked me.

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

ResourcePriorityQueue.cpp

Silence a bunch of implicit fallthrough warnings

2017-12-19 22:05:25 +00:00

ScheduleDAGFast.cpp

[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out

2018-12-10 11:20:47 +00:00

ScheduleDAGRRList.cpp

ScheduleDAG: Cleanup dumping code; NFC

2018-09-19 00:23:35 +00:00

ScheduleDAGSDNodes.cpp

[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out

2018-12-10 11:20:47 +00:00

ScheduleDAGSDNodes.h

ScheduleDAG: Cleanup dumping code; NFC

2018-09-19 00:23:35 +00:00

ScheduleDAGVLIW.cpp

ScheduleDAG: Cleanup dumping code; NFC

2018-09-19 00:23:35 +00:00

SDNodeDbgValue.h

[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out

2018-12-10 11:20:47 +00:00

SelectionDAG.cpp

[DebugInfo] Emit undef DBG_VALUEs when SDNodes are optimised out

2018-12-10 11:20:47 +00:00

SelectionDAGAddressAnalysis.cpp

[SelectionDAG] Teach BaseIndexOffset::match to unwrap the base after looking through an add/or

2018-11-26 20:16:33 +00:00

SelectionDAGBuilder.cpp

[DebugInfo] Don't drop dbg.value's of nullptr

2018-12-10 12:04:08 +00:00

SelectionDAGBuilder.h

[IR] Add a dedicated FNeg IR Instruction

2018-11-13 18:15:47 +00:00

SelectionDAGDumper.cpp

[SelectionDAG] Initial support for FSHL/FSHR funnel shift opcodes (PR39467)

2018-12-05 11:12:12 +00:00

SelectionDAGISel.cpp

TableGen/ISel: Allow PatFrag predicate code to access captured operands

2018-11-30 14:15:13 +00:00

SelectionDAGPrinter.cpp

Rename DEBUG macro to LLVM_DEBUG.

2018-05-14 12:53:11 +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] Prefer static frame index for STATEPOINT liveness args

2018-11-30 16:22:41 +00:00

StatepointLowering.h

[IR][CodeGen] Remove dependency on EVT from IR/Function.cpp. Move EVT to CodeGen layer.

2018-03-29 17:21:10 +00:00

TargetLowering.cpp

[TargetLowering] Add UNDEF folding to SimplifyDemandedVectorElts

2018-12-10 18:29:46 +00:00