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Add "original alignment" to function arguments flags. 

llvm-svn: 34240
This commit is contained in:
Lauro Ramos Venancio 2007-02-13 13:50:08 +00:00
parent 16c6b85c78
commit 9956dcffbe
1 changed files with 30 additions and 10 deletions
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40
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -2933,8 +2933,13 @@ TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
MVT::ValueType VT = getValueType(I->getType());
bool isInReg = FTy->paramHasAttr(j, FunctionType::InRegAttribute);
bool isSRet = FTy->paramHasAttr(j, FunctionType::StructRetAttribute);
unsigned Flags = (isInReg << 1) | (isSRet << 2);
unsigned OriginalAlignment =
getTargetData()->getTypeAlignmentABI(I->getType());
//Flags[31:27]-> OriginalAlignment
//Flags[2] -> isSRet
//Flags[1] -> isInReg
unsigned Flags = (isInReg << 1) | (isSRet << 2) | (OriginalAlignment << 27);
switch (getTypeAction(VT)) {
default: assert(0 && "Unknown type action!");
case Legal:
@ -2954,6 +2959,8 @@ TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
unsigned NumVals = getNumElements(VT);
for (unsigned i = 0; i != NumVals; ++i) {
RetVals.push_back(NVT);
//if it isn't first piece, alignment must be 1
if (i == 1) Flags = (Flags & 0x07ffffff) | (1 << 27);
Ops.push_back(DAG.getConstant(Flags, MVT::i32));
}
} else {
@ -3053,11 +3060,16 @@ TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
/// ExpandScalarCallArgs - Recursively expand call argument node by
/// bit_converting it or extract a pair of elements from the larger node.
static void ExpandScalarCallArgs(MVT::ValueType VT, SDOperand Arg,
unsigned Flags,
unsigned Flags,
SmallVector<SDOperand, 32> &Ops,
SelectionDAG &DAG,
TargetLowering &TLI) {
TargetLowering &TLI,
bool isFirst = true) {
if (TLI.getTypeAction(VT) != TargetLowering::Expand) {
//if it isn't first piece, alignment must be 1
if (!isFirst)
Flags = (Flags & 0x07ffffff) | (1 << 27);
Ops.push_back(Arg);
Ops.push_back(DAG.getConstant(Flags, MVT::i32));
return;
@ -3067,7 +3079,7 @@ static void ExpandScalarCallArgs(MVT::ValueType VT, SDOperand Arg,
unsigned NumVals = MVT::getSizeInBits(VT) / MVT::getSizeInBits(EVT);
if (NumVals == 1) {
Arg = DAG.getNode(ISD::BIT_CONVERT, EVT, Arg);
ExpandScalarCallArgs(EVT, Arg, Flags, Ops, DAG, TLI);
ExpandScalarCallArgs(EVT, Arg, Flags, Ops, DAG, TLI, isFirst);
} else if (NumVals == 2) {
SDOperand Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, EVT, Arg,
DAG.getConstant(0, TLI.getPointerTy()));
@ -3075,8 +3087,8 @@ static void ExpandScalarCallArgs(MVT::ValueType VT, SDOperand Arg,
DAG.getConstant(1, TLI.getPointerTy()));
if (!TLI.isLittleEndian())
std::swap(Lo, Hi);
ExpandScalarCallArgs(EVT, Lo, Flags, Ops, DAG, TLI);
ExpandScalarCallArgs(EVT, Hi, Flags, Ops, DAG, TLI);
ExpandScalarCallArgs(EVT, Lo, Flags, Ops, DAG, TLI, isFirst);
ExpandScalarCallArgs(EVT, Hi, Flags, Ops, DAG, TLI, false);
} else {
// Value scalarized into many values. Unimp for now.
assert(0 && "Cannot expand i64 -> i16 yet!");
@ -3106,11 +3118,19 @@ TargetLowering::LowerCallTo(SDOperand Chain, const Type *RetTy,
SDOperand Op = Args[i].Node;
bool isSigned = Args[i].isSigned;
bool isInReg = Args[i].isInReg;
bool isSRet = Args[i].isSRet;
unsigned Flags = (isSRet << 2) | (isInReg << 1) | isSigned;
bool isSRet = Args[i].isSRet;
unsigned OriginalAlignment =
getTargetData()->getTypeAlignmentABI(Args[i].Ty);
//Flags[31:27]-> OriginalAlignment
//Flags[2] -> isSRet
//Flags[1] -> isInReg
//Flags[0] -> isSigned
unsigned Flags = (isSRet << 2) | (isInReg << 1) | isSigned |
(OriginalAlignment << 27);
switch (getTypeAction(VT)) {
default: assert(0 && "Unknown type action!");
case Legal:
case Legal:
Ops.push_back(Op);
Ops.push_back(DAG.getConstant(Flags, MVT::i32));
break;