Sanjay Patel 250785bc7b [SelectionDAG] enhance vector demanded elements to look at a vector select condition operand ...

This is the DAG equivalent of D51433.
If we know we're not using all vector lanes, use that knowledge to potentially simplify a vselect condition.

The reduction/horizontal tests show that we are eliminating AVX1 operations on the upper half of 256-bit 
vectors because we don't need those anyway.
I'm not sure what the pr34592 test is showing. That's run with -O0; is SimplifyDemandedVectorElts supposed 
to be running there?

Differential Revision: https://reviews.llvm.org/D51696


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@341762 91177308-0d34-0410-b5e6-96231b3b80d8

2018-09-09 14:13:22 +00:00

..

CMakeLists.txt

Remove trailing whitespace to trigger re-cmaking

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

DAGCombiner.cpp

[DAGCombiner] foldBitcastedFPLogic - Add basic vector support

2018-09-07 12:13:45 +00:00

FastISel.cpp

[IR] Replace isa<TerminatorInst> with isTerminator().

2018-08-26 09:51:22 +00:00

FunctionLoweringInfo.cpp

DAG: Add calling convention argument to calling convention funcs

2018-07-28 13:25:19 +00:00

InstrEmitter.cpp

[MI] Change the array of MachineMemOperand pointers to be

2018-08-16 21:30:05 +00:00

InstrEmitter.h

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

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

LegalizeDAG.cpp

[ARM] Lower llvm.ctlz.i32 to a libcall when clz is not available.

2018-08-22 21:47:14 +00:00

LegalizeFloatTypes.cpp

DAG: Try to custom lower when promoting float operands

2018-08-15 20:34:54 +00:00

LegalizeIntegerTypes.cpp

[SelectionDAG][X86] Reorder the operands the MaskedStoreSDNode to put the value first.

2018-08-25 17:48:17 +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

[X86] Support v2i32 gather/scatter indices with -x86-experimental-vector-widening-legalization

2018-08-29 02:12:49 +00:00

LegalizeTypesGeneric.cpp

Avoid losing Hi part when expanding VAARG nodes on big endian machines

2018-07-16 12:14:17 +00:00

LegalizeVectorOps.cpp

[FPEnv] Support constrained FREM intrinsic

2018-08-20 19:28:56 +00:00

LegalizeVectorTypes.cpp

[X86] Support v2i32 gather/scatter indices with -x86-experimental-vector-widening-legalization

2018-08-29 02:12:49 +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

Rename DEBUG macro to LLVM_DEBUG.

2018-05-14 12:53:11 +00:00

ScheduleDAGRRList.cpp

[ScheduleDAG] Fix unfolding of SUnits to already existent nodes.

2018-07-18 18:01:03 +00:00

ScheduleDAGSDNodes.cpp

[SDAG] Remove the reliance on MI's allocation strategy for

2018-08-14 23:30:32 +00:00

ScheduleDAGSDNodes.h

[CodeGen] Fix inconsistent declaration parameter name

2018-07-16 18:51:40 +00:00

ScheduleDAGVLIW.cpp

Rename DEBUG macro to LLVM_DEBUG.

2018-05-14 12:53:11 +00:00

SDNodeDbgValue.h

[DebugInfo] LowerDbgDeclare: Add derefs when handling CallInst users

2018-07-26 20:56:53 +00:00

SelectionDAG.cpp

[CodeGen] Fix remaining zext() assertions in SelectionDAG

2018-09-04 16:33:34 +00:00

SelectionDAGAddressAnalysis.cpp

[DAG] Teach findBaseOffset to interpret indexes of indexed memory operations

2018-01-26 16:51:27 +00:00

SelectionDAGBuilder.cpp

DAG: Factor out helper function for odd vector sizes

2018-09-04 18:47:43 +00:00

SelectionDAGBuilder.h

DAG: Add calling convention argument to calling convention funcs

2018-07-28 13:25:19 +00:00

SelectionDAGDumper.cpp

Get rid of SETCCE

2018-06-04 18:36:22 +00:00

SelectionDAGISel.cpp

[NFC] Rename the DivergenceAnalysis to LegacyDivergenceAnalysis

2018-08-30 14:21:36 +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

Remove trailing space

2018-07-30 19:41:25 +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

[SelectionDAG] enhance vector demanded elements to look at a vector select condition operand

2018-09-09 14:13:22 +00:00