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SelectionDAG: Pass along the original argument/element type in ISD::InputArg

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For some targets, it is useful to be able to look at the original
type of an argument without having to dig through the original IR.

This also fixes a bug in SelectionDAGBuilder where InputArg.PartOffset
was not taking into account the offset of structure elements.

Patch by: Justin Holewinski

Tom Stellard:
  - Changed the type of ArgVT to EVT, so it can store non-simple types
    like v3i32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193214 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2013-10-23 00:44:24 +00:00
parent 6a2f9b9137
commit d0716b0647
3 changed files with 15 additions and 8 deletions
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13
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@@ -1268,7 +1268,7 @@ void SelectionDAGBuilder::visitRet(const ReturnInst &I) {
for (unsigned i = 0; i < NumParts; ++i) {
Outs.push_back(ISD::OutputArg(Flags, Parts[i].getValueType(),
/*isfixed=*/true, 0, 0));
VT, /*isfixed=*/true, 0, 0));
OutVals.push_back(Parts[i]);
}
}
@@ -6738,6 +6738,7 @@ TargetLowering::LowerCallTo(TargetLowering::CallLoweringInfo &CLI) const {
for (unsigned i = 0; i != NumRegs; ++i) {
ISD::InputArg MyFlags;
MyFlags.VT = RegisterVT;
MyFlags.ArgVT = VT;
MyFlags.Used = CLI.IsReturnValueUsed;
if (CLI.RetSExt)
MyFlags.Flags.setSExt();
@@ -6827,7 +6828,7 @@ TargetLowering::LowerCallTo(TargetLowering::CallLoweringInfo &CLI) const {
for (unsigned j = 0; j != NumParts; ++j) {
// if it isn't first piece, alignment must be 1
ISD::OutputArg MyFlags(Flags, Parts[j].getValueType(),
ISD::OutputArg MyFlags(Flags, Parts[j].getValueType(), VT,
i < CLI.NumFixedArgs,
i, j*Parts[j].getValueType().getStoreSize());
if (NumParts > 1 && j == 0)
@@ -6966,7 +6967,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
ISD::ArgFlagsTy Flags;
Flags.setSRet();
MVT RegisterVT = TLI->getRegisterType(*DAG.getContext(), ValueVTs[0]);
ISD::InputArg RetArg(Flags, RegisterVT, true, 0, 0);
ISD::InputArg RetArg(Flags, RegisterVT, ValueVTs[0], true, 0, 0);
Ins.push_back(RetArg);
}
@@ -6977,6 +6978,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
SmallVector<EVT, 4> ValueVTs;
ComputeValueVTs(*TLI, I->getType(), ValueVTs);
bool isArgValueUsed = !I->use_empty();
unsigned PartBase = 0;
for (unsigned Value = 0, NumValues = ValueVTs.size();
Value != NumValues; ++Value) {
EVT VT = ValueVTs[Value];
@@ -7014,8 +7016,8 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
MVT RegisterVT = TLI->getRegisterType(*CurDAG->getContext(), VT);
unsigned NumRegs = TLI->getNumRegisters(*CurDAG->getContext(), VT);
for (unsigned i = 0; i != NumRegs; ++i) {
ISD::InputArg MyFlags(Flags, RegisterVT, isArgValueUsed,
Idx-1, i*RegisterVT.getStoreSize());
ISD::InputArg MyFlags(Flags, RegisterVT, VT, isArgValueUsed,
Idx-1, PartBase+i*RegisterVT.getStoreSize());
if (NumRegs > 1 && i == 0)
MyFlags.Flags.setSplit();
// if it isn't first piece, alignment must be 1
@@ -7023,6 +7025,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
MyFlags.Flags.setOrigAlign(1);
Ins.push_back(MyFlags);
}
PartBase += VT.getStoreSize();
}
}