[llvm] 0f16d66 - [NFC][CostModel] Refactor getCastInstrCost
Sam Parker via llvm-commits
llvm-commits at lists.llvm.org
Mon Apr 27 04:42:59 PDT 2020
Author: Sam Parker
Date: 2020-04-27T12:42:34+01:00
New Revision: 0f16d66c80eb0b65c4ae55e27671d46f66be065f
URL: https://github.com/llvm/llvm-project/commit/0f16d66c80eb0b65c4ae55e27671d46f66be065f
DIFF: https://github.com/llvm/llvm-project/commit/0f16d66c80eb0b65c4ae55e27671d46f66be065f.diff
LOG: [NFC][CostModel] Refactor getCastInstrCost
Move ZExt/SExt load handling into the BasicTTI switch statement.
Added:
Modified:
llvm/include/llvm/CodeGen/BasicTTIImpl.h
Removed:
################################################################################
diff --git a/llvm/include/llvm/CodeGen/BasicTTIImpl.h b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
index 21e3d93ded22..0aca5cf3844b 100644
--- a/llvm/include/llvm/CodeGen/BasicTTIImpl.h
+++ b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
@@ -702,24 +702,25 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
case Instruction::ZExt:
if (TLI->isZExtFree(SrcLT.second, DstLT.second))
return 0;
- break;
- case Instruction::AddrSpaceCast:
- if (TLI->isFreeAddrSpaceCast(Src->getPointerAddressSpace(),
- Dst->getPointerAddressSpace()))
- return 0;
- break;
- }
-
- // If this is a zext/sext of a load, return 0 if the corresponding
- // extending load exists on target.
- if ((Opcode == Instruction::ZExt || Opcode == Instruction::SExt) &&
- I && isa<LoadInst>(I->getOperand(0))) {
+ LLVM_FALLTHROUGH;
+ case Instruction::SExt: {
+ // If this is a zext/sext of a load, return 0 if the corresponding
+ // extending load exists on target.
+ if (I && isa<LoadInst>(I->getOperand(0))) {
EVT ExtVT = EVT::getEVT(Dst);
EVT LoadVT = EVT::getEVT(Src);
unsigned LType =
((Opcode == Instruction::ZExt) ? ISD::ZEXTLOAD : ISD::SEXTLOAD);
if (TLI->isLoadExtLegal(LType, ExtVT, LoadVT))
return 0;
+ }
+ break;
+ }
+ case Instruction::AddrSpaceCast:
+ if (TLI->isFreeAddrSpaceCast(Src->getPointerAddressSpace(),
+ Dst->getPointerAddressSpace()))
+ return 0;
+ break;
}
// If the cast is marked as legal (or promote) then assume low cost.
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