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Make sure custom lowering for LegalizeTypes 

returns a node with the right number of
return values.  This fixes codegen of
Generic/cast-fp.ll, Generic/fp_to_int.ll
and PowerPC/multiple-return-values.ll
when using -march=ppc32 -mattr=+64bit.

llvm-svn: 53794
This commit is contained in:
Duncan Sands 2008-07-19 16:26:02 +00:00
parent 82510bf0e3
commit 2a28791789
1 changed files with 10 additions and 4 deletions
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14
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -2855,7 +2855,7 @@ SDOperand PPCTargetLowering::LowerFP_TO_SINT(SDOperand Op, SelectionDAG &DAG) {
SDOperand Src = Op.getOperand(0);
if (Src.getValueType() == MVT::f32)
Src = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Src);
SDOperand Tmp;
switch (Op.getValueType().getSimpleVT()) {
default: assert(0 && "Unhandled FP_TO_SINT type in custom expander!");
@ -2866,10 +2866,10 @@ SDOperand PPCTargetLowering::LowerFP_TO_SINT(SDOperand Op, SelectionDAG &DAG) {
Tmp = DAG.getNode(PPCISD::FCTIDZ, MVT::f64, Src);
break;
}
// Convert the FP value to an int value through memory.
SDOperand FIPtr = DAG.CreateStackTemporary(MVT::f64);
// Emit a store to the stack slot.
SDOperand Chain = DAG.getStore(DAG.getEntryNode(), Tmp, FIPtr, NULL, 0);
@ -3907,7 +3907,13 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
SDNode *PPCTargetLowering::ReplaceNodeResults(SDNode *N, SelectionDAG &DAG) {
switch (N->getOpcode()) {
default: assert(0 && "Wasn't expecting to be able to lower this!");
case ISD::FP_TO_SINT: return LowerFP_TO_SINT(SDOperand(N, 0), DAG).Val;
case ISD::FP_TO_SINT: {
SDOperand Res = LowerFP_TO_SINT(SDOperand(N, 0), DAG);
// Use MERGE_VALUES to drop the chain result value and get a node with one
// result. This requires turning off getMergeValues simplification, since
// otherwise it will give us Res back.
return DAG.getMergeValues(&Res, 1, false).Val;
}
}
}