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llvm-project/llvm/lib/CodeGen/SelectionDAG
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Simon Pilgrim e9caa37e9c [DAG] Move lshr narrowing from visitANDLike to SimplifyDemandedBits 
Inspired by some of the cases from D145468

Let SimplifyDemandedBits handle the narrowing of lshr to half-width if we don't require the upper bits, the narrowed shift is profitable and the zext/trunc are free.

A future patch will propose the equivalent shl narrowing combine.

Differential Revision: https://reviews.llvm.org/D146121
2023-07-17 15:50:09 +01:00
..
CMakeLists.txt
Split out CodeGenTypes from CodeGen for LLT/MVT
2023-05-03 00:13:20 +09:00
DAGCombiner.cpp
[DAG] Move lshr narrowing from visitANDLike to SimplifyDemandedBits
2023-07-17 15:50:09 +01:00
FastISel.cpp
[XRay][AArch64] Suppport __xray_customevent/__xray_typedevent
2023-06-23 09:24:18 -07:00
FunctionLoweringInfo.cpp
[1/11][IR] Permit load/store/alloca for struct of the same scalable vector type
2023-05-19 09:39:36 -07:00
InstrEmitter.cpp
[SDAG] Preserve unpredictable metadata, teach X86CmovConversion to respect this metadata
2023-06-01 20:56:44 +02:00
InstrEmitter.h
[DebugInfo] Store instr-ref mode of MachineFunction in member
2023-01-20 14:47:11 +00:00
LegalizeDAG.cpp
[LegalizeDAG] Prevent LegalizeLoadOps from creating extloads that mix int and fp types.
2023-07-12 08:03:35 -07:00
LegalizeFloatTypes.cpp
DAG: Implement soften float for ffrexp
2023-07-05 21:42:27 -04:00
LegalizeIntegerTypes.cpp
IR: Add llvm.frexp intrinsic
2023-06-28 14:50:16 -04:00
LegalizeTypes.cpp
[DAG] Use legal shift amount type in DAGTypeLegalizer::JoinIntegers
2023-07-12 08:12:09 +01:00
LegalizeTypes.h
DAG: Implement soften float for ffrexp
2023-07-05 21:42:27 -04:00
LegalizeTypesGeneric.cpp
[LegalizeType][X86] Support WidenVecRes_AssertZext and SplitVecRes_AssertZext for ISD::AssertZext during LegalizeType procedure
2023-05-24 10:17:08 +08:00
LegalizeVectorOps.cpp
IR: Add llvm.frexp intrinsic
2023-06-28 14:50:16 -04:00
LegalizeVectorTypes.cpp
DAG: Fix dropping flags when widening unary vector ops
2023-07-05 17:25:24 -04:00
ResourcePriorityQueue.cpp
Remove unneeded cl::ZeroOrMore for cl::opt/cl::list options
2022-06-05 00:31:44 -07:00
ScheduleDAGFast.cpp
Fix uninitialized scalar members in CodeGen
2023-04-21 12:22:34 +08:00
ScheduleDAGRRList.cpp
Restore CodeGen/MachineValueType.h from Support
2023-05-03 00:13:20 +09:00
ScheduleDAGSDNodes.cpp
Clean come dead code
2023-04-23 20:46:34 -04:00
ScheduleDAGSDNodes.h
Restore CodeGen/MachineValueType.h from Support
2023-05-03 00:13:20 +09:00
ScheduleDAGVLIW.cpp
…
SDNodeDbgValue.h
[DebugInfo] Remove dbg.addr from CodeGen
2023-03-02 09:29:43 +00:00
SelectionDAG.cpp
[SelectionDAG] Fill in some more cases in isKnownNeverZero
2023-07-12 17:17:53 -05:00
SelectionDAGAddressAnalysis.cpp
[CodeGen] llvm::Optional => std::optional
2022-12-13 09:06:36 +00:00
SelectionDAGBuilder.cpp
Don't assert on a non-pointer value being used for a "p" inline asm constraint.
2023-07-13 10:45:56 -07:00
SelectionDAGBuilder.h
Restore CodeGen/MachineValueType.h from Support
2023-05-03 00:13:20 +09:00
SelectionDAGDumper.cpp
IR: Add llvm.frexp intrinsic
2023-06-28 14:50:16 -04:00
SelectionDAGISel.cpp
[SelectionDAG][DebugInfo] Implement translation of entry_value vars
2023-05-12 12:00:13 -04:00
SelectionDAGPrinter.cpp
…
SelectionDAGTargetInfo.cpp
…
StatepointLowering.cpp
Fix "this this" duplicate typo in comment. NFC.
2023-06-27 11:46:02 +01:00
StatepointLowering.h
…
TargetLowering.cpp
[DAG] Move lshr narrowing from visitANDLike to SimplifyDemandedBits
2023-07-17 15:50:09 +01:00