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R600: Add helper functions.

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Extract these from some of my other patches, since this
is the only thing really making them dependent on each other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210627 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2014-06-11 03:29:54 +00:00
parent e869d88843
commit e0162b9648
2 changed files with 21 additions and 0 deletions
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19
lib/Target/R600/AMDGPUISelLowering.cpp
View File

@ -84,6 +84,25 @@ static bool allocateStack(unsigned ValNo, MVT ValVT, MVT LocVT,
#include "AMDGPUGenCallingConv.inc"
// Find a larger type to do a load / store of a vector with.
EVT AMDGPUTargetLowering::getEquivalentMemType(LLVMContext &Ctx, EVT VT) {
unsigned StoreSize = VT.getStoreSizeInBits();
if (StoreSize <= 32)
return EVT::getIntegerVT(Ctx, StoreSize);
assert(StoreSize % 32 == 0 && "Store size not a multiple of 32");
return EVT::getVectorVT(Ctx, MVT::i32, StoreSize / 32);
}
// Type for a vector that will be loaded to.
EVT AMDGPUTargetLowering::getEquivalentLoadRegType(LLVMContext &Ctx, EVT VT) {
unsigned StoreSize = VT.getStoreSizeInBits();
if (StoreSize <= 32)
return EVT::getIntegerVT(Ctx, 32);
return EVT::getVectorVT(Ctx, MVT::i32, StoreSize / 32);
}
AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
TargetLowering(TM, new TargetLoweringObjectFileELF()) {

2
lib/Target/R600/AMDGPUISelLowering.h
View File

@ -46,6 +46,8 @@ private:
SDValue LowerUINT_TO_FP(SDValue Op, SelectionDAG &DAG) const;
protected:
static EVT getEquivalentMemType(LLVMContext &Context, EVT VT);
static EVT getEquivalentLoadRegType(LLVMContext &Context, EVT VT);
/// \brief Helper function that adds Reg to the LiveIn list of the DAG's
/// MachineFunction.