[llvm] [ExpandLargeDivRem] Scalarize vector types. (PR #86959)
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 28 11:01:41 PDT 2024
================
@@ -54,8 +54,34 @@ static bool isSigned(unsigned int Opcode) {
return Opcode == Instruction::SDiv || Opcode == Instruction::SRem;
}
+static void scalarize(BinaryOperator *BO,
+ SmallVectorImpl<BinaryOperator *> &Replace) {
+ VectorType *VTy = cast<VectorType>(BO->getType());
+ assert(!VTy->isScalableTy() && "Tried to scalarize scalable vector!");
+
+ IRBuilder<> Builder(BO);
+
+ unsigned NumElements = VTy->getElementCount().getKnownMinValue();
+ Value *Result = nullptr;
+ for (unsigned Idx = 0; Idx < NumElements; ++Idx) {
+ Value *LHS = Builder.CreateExtractElement(BO->getOperand(0), Idx);
----------------
arsenm wrote:
We should probably create a utility for this somewhere. Scalarizer and AMDGPUCodeGenPrepare both do essentially the same thing already
https://github.com/llvm/llvm-project/pull/86959
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