mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-19 19:29:31 +00:00
Be smarter about whether to store the SSE return value in memory. If
it is already available in memory, do a fld directly from there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25859 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
bb1d528aa6
commit
0e8671bf4a
@ -1912,20 +1912,27 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
|
||||
Ops.push_back(Op.getOperand(1));
|
||||
Copy = DAG.getNode(X86ISD::FP_SET_RESULT, Tys, Ops);
|
||||
} else {
|
||||
// Spill the value to memory and reload it into top of stack.
|
||||
unsigned Size = MVT::getSizeInBits(ArgVT)/8;
|
||||
MachineFunction &MF = DAG.getMachineFunction();
|
||||
int SSFI = MF.getFrameInfo()->CreateStackObject(Size, Size);
|
||||
SDOperand StackSlot = DAG.getFrameIndex(SSFI, getPointerTy());
|
||||
SDOperand Chain = DAG.getNode(ISD::STORE, MVT::Other, Op.getOperand(0),
|
||||
Op.getOperand(1), StackSlot,
|
||||
DAG.getSrcValue(0));
|
||||
SDOperand MemLoc, Chain;
|
||||
SDOperand Value = Op.getOperand(1);
|
||||
|
||||
if (Value.getOpcode() == ISD::LOAD) {
|
||||
Chain = Value.getOperand(0);
|
||||
MemLoc = Value.getOperand(1);
|
||||
} else {
|
||||
// Spill the value to memory and reload it into top of stack.
|
||||
unsigned Size = MVT::getSizeInBits(ArgVT)/8;
|
||||
MachineFunction &MF = DAG.getMachineFunction();
|
||||
int SSFI = MF.getFrameInfo()->CreateStackObject(Size, Size);
|
||||
MemLoc = DAG.getFrameIndex(SSFI, getPointerTy());
|
||||
Chain = DAG.getNode(ISD::STORE, MVT::Other, Op.getOperand(0),
|
||||
Value, MemLoc, DAG.getSrcValue(0));
|
||||
}
|
||||
std::vector<MVT::ValueType> Tys;
|
||||
Tys.push_back(MVT::f64);
|
||||
Tys.push_back(MVT::Other);
|
||||
std::vector<SDOperand> Ops;
|
||||
Ops.push_back(Chain);
|
||||
Ops.push_back(StackSlot);
|
||||
Ops.push_back(MemLoc);
|
||||
Ops.push_back(DAG.getValueType(ArgVT));
|
||||
Copy = DAG.getNode(X86ISD::FLD, Tys, Ops);
|
||||
Tys.clear();
|
||||
|
Loading…
Reference in New Issue
Block a user