[PATCH] D86894: [SVE] Disable INSERT_SUBVECTOR DAGCombine for scalable vectors
Cameron McInally via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 1 14:52:05 PDT 2020
This revision was automatically updated to reflect the committed changes.
Closed by commit rGcfe2b81710c4: [SVE] Update INSERT_SUBVECTOR DAGCombine to use getVectorElementCount(). (authored by cameron.mcinally).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D86894/new/
https://reviews.llvm.org/D86894
Files:
llvm/include/llvm/Support/TypeSize.h
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
Index: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -20620,7 +20620,7 @@
SDLoc DL(N);
SDValue NewIdx;
LLVMContext &Ctx = *DAG.getContext();
- unsigned NumElts = VT.getVectorNumElements();
+ ElementCount NumElts = VT.getVectorElementCount();
unsigned EltSizeInBits = VT.getScalarSizeInBits();
if ((EltSizeInBits % N1SrcSVT.getSizeInBits()) == 0) {
unsigned Scale = EltSizeInBits / N1SrcSVT.getSizeInBits();
@@ -20628,7 +20628,7 @@
NewIdx = DAG.getVectorIdxConstant(InsIdx * Scale, DL);
} else if ((N1SrcSVT.getSizeInBits() % EltSizeInBits) == 0) {
unsigned Scale = N1SrcSVT.getSizeInBits() / EltSizeInBits;
- if ((NumElts % Scale) == 0 && (InsIdx % Scale) == 0) {
+ if (NumElts.isKnownMultipleOf(Scale) && (InsIdx % Scale) == 0) {
NewVT = EVT::getVectorVT(Ctx, N1SrcSVT, NumElts / Scale);
NewIdx = DAG.getVectorIdxConstant(InsIdx / Scale, DL);
}
Index: llvm/include/llvm/Support/TypeSize.h
===================================================================
--- llvm/include/llvm/Support/TypeSize.h
+++ llvm/include/llvm/Support/TypeSize.h
@@ -79,6 +79,10 @@
return {(unsigned)llvm::NextPowerOf2(Min), Scalable};
}
+ bool isKnownMultipleOf(unsigned RHS) const {
+ return Min % RHS == 0;
+ }
+
static ElementCount getFixed(unsigned Min) { return {Min, false}; }
static ElementCount getScalable(unsigned Min) { return {Min, true}; }
static ElementCount get(unsigned Min, bool Scalable) {
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