return VT == MVT::f32;
}
-bool AMDGPUTargetLowering::isTruncateFree(EVT, EVT Dest) const {
+bool AMDGPUTargetLowering::isTruncateFree(EVT Source, EVT Dest) const {
// Truncate is just accessing a subregister.
- return (Dest.getSizeInBits() % 32 == 0);
+ return Dest.bitsLT(Source) && (Dest.getSizeInBits() % 32 == 0);
+}
+
+bool AMDGPUTargetLowering::isTruncateFree(Type *Source, Type *Dest) const {
+ // Truncate is just accessing a subregister.
+ return Dest->getPrimitiveSizeInBits() < Source->getPrimitiveSizeInBits() &&
+ (Dest->getPrimitiveSizeInBits() % 32 == 0);
}
//===---------------------------------------------------------------------===//
public:
AMDGPUTargetLowering(TargetMachine &TM);
- virtual bool isFAbsFree(EVT VT) const;
- virtual bool isFNegFree(EVT VT) const;
+ virtual bool isFAbsFree(EVT VT) const LLVM_OVERRIDE;
+ virtual bool isFNegFree(EVT VT) const LLVM_OVERRIDE;
virtual bool isTruncateFree(EVT Src, EVT Dest) const LLVM_OVERRIDE;
- virtual MVT getVectorIdxTy() const;
+ virtual bool isTruncateFree(Type *Src, Type *Dest) const LLVM_OVERRIDE;
+ virtual MVT getVectorIdxTy() const LLVM_OVERRIDE;
virtual bool isLoadBitCastBeneficial(EVT, EVT) const LLVM_OVERRIDE;
virtual SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv,
bool isVarArg,