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Expand f32 / f64 to i32 / i64 conversion to soft-fp library calls.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32523 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-12-13 01:57:55 +00:00
parent 7f88ee0c5a
commit 6af00d588c
1 changed files with 23 additions and 2 deletions
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25
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -2860,8 +2860,29 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
break;
}
break;
case Expand:
assert(0 && "Shouldn't need to expand other operators here!");
case Expand: {
// Convert f32 / f64 to i32 / i64.
MVT::ValueType VT = Op.getValueType();
const char *FnName = 0;
switch (Node->getOpcode()) {
case ISD::FP_TO_SINT:
if (Node->getOperand(0).getValueType() == MVT::f32)
FnName = (VT == MVT::i32) ? "__fixsfsi" : "__fixsfdi";
else
FnName = (VT == MVT::i32) ? "__fixdfsi" : "__fixdfdi";
break;
case ISD::FP_TO_UINT:
if (Node->getOperand(0).getValueType() == MVT::f32)
FnName = (VT == MVT::i32) ? "__fixunssfsi" : "__fixunssfdi";
else
FnName = (VT == MVT::i32) ? "__fixunsdfsi" : "__fixunsdfdi";
break;
default: assert(0 && "Unreachable!");
}
SDOperand Dummy;
Result = ExpandLibCall(FnName, Node, Dummy);
break;
}
case Promote:
Tmp1 = PromoteOp(Node->getOperand(0));
Result = DAG.UpdateNodeOperands(Result, LegalizeOp(Tmp1));