[PATCH] D126440: [RISCV] Return an invalid cost for memory ops with unsupported types
LiqinWeng via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed May 25 20:05:48 PDT 2022
Miss_Grape created this revision.
Miss_Grape added reviewers: craig.topper, benshi001.
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Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D126440
Files:
llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
Index: llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
===================================================================
--- llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -195,7 +195,18 @@
return BaseT::getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace,
CostKind);
- return getMemoryOpCost(Opcode, Src, Alignment, AddressSpace, CostKind);
+ auto LT = TLI->getTypeLegalizationCost(DL, Src);
+ if (!LT.first.isValid())
+ return InstructionCost::getInvalid();
+
+ // The code-generator is currently not able to handle scalable vectors
+ // of <vscale x 1 x eltty> yet, so return an invalid cost to avoid selecting
+ // it. This change will be removed when code-generation for these types is
+ // sufficiently reliable.
+ if (cast<VectorType>(Src)->getElementCount() == ElementCount::getScalable(1))
+ return InstructionCost::getInvalid();
+
+ return LT.first;
}
InstructionCost RISCVTTIImpl::getGatherScatterOpCost(
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