DAG: Use poison in SplitVecRes_VP_LOAD_FF#167753
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arsenm
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backend:AArch64
backend:ARM
backend:RISC-V
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llvm:SelectionDAG
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@llvm/pr-subscribers-llvm-selectiondag @llvm/pr-subscribers-backend-aarch64 Author: Matt Arsenault (arsenm) ChangesFull diff: https://github.com/llvm/llvm-project/pull/167753.diff 1 Files Affected:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 461cea2e80748..417122d467054 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -2363,7 +2363,7 @@ void DAGTypeLegalizer::SplitVecRes_VP_LOAD_FF(VPLoadFFSDNode *LD, SDValue &Lo,
Lo = DAG.getLoadFFVP(LoVT, dl, Ch, Ptr, MaskLo, EVLLo, MMO);
// Fill the upper half with poison.
- Hi = DAG.getUNDEF(HiVT);
+ Hi = DAG.getPOISON(HiVT);
ReplaceValueWith(SDValue(LD, 1), Lo.getValue(1));
ReplaceValueWith(SDValue(LD, 2), Lo.getValue(2));
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@llvm/pr-subscribers-backend-risc-v Author: Matt Arsenault (arsenm) ChangesFull diff: https://github.com/llvm/llvm-project/pull/167753.diff 1 Files Affected:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 461cea2e80748..417122d467054 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -2363,7 +2363,7 @@ void DAGTypeLegalizer::SplitVecRes_VP_LOAD_FF(VPLoadFFSDNode *LD, SDValue &Lo,
Lo = DAG.getLoadFFVP(LoVT, dl, Ch, Ptr, MaskLo, EVLLo, MMO);
// Fill the upper half with poison.
- Hi = DAG.getUNDEF(HiVT);
+ Hi = DAG.getPOISON(HiVT);
ReplaceValueWith(SDValue(LD, 1), Lo.getValue(1));
ReplaceValueWith(SDValue(LD, 2), Lo.getValue(2));
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Member
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@llvm/pr-subscribers-backend-arm Author: Matt Arsenault (arsenm) ChangesFull diff: https://github.com/llvm/llvm-project/pull/167753.diff 1 Files Affected:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 461cea2e80748..417122d467054 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -2363,7 +2363,7 @@ void DAGTypeLegalizer::SplitVecRes_VP_LOAD_FF(VPLoadFFSDNode *LD, SDValue &Lo,
Lo = DAG.getLoadFFVP(LoVT, dl, Ch, Ptr, MaskLo, EVLLo, MMO);
// Fill the upper half with poison.
- Hi = DAG.getUNDEF(HiVT);
+ Hi = DAG.getPOISON(HiVT);
ReplaceValueWith(SDValue(LD, 1), Lo.getValue(1));
ReplaceValueWith(SDValue(LD, 2), Lo.getValue(2));
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RKSimon
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Nov 13, 2025
Base automatically changed from
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November 15, 2025 16:47
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