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Do not change the size of function arguments. PR 1489. 

llvm-svn: 37496
This commit is contained in:
Dale Johannesen 2007-06-07 21:07:15 +00:00
parent 5b8a5516e4
commit 9a4d987a5f
1 changed files with 9 additions and 1 deletions
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10
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -3993,7 +3993,15 @@ TargetLowering::LowerCallTo(SDOperand Chain, const Type *RetTy,
Op = DAG.getNode(ExtOp, getTypeToTransformTo(VT), Op);
} else {
assert(MVT::isFloatingPoint(VT) && "Not int or FP?");
Op = DAG.getNode(ISD::FP_EXTEND, getTypeToTransformTo(VT), Op);
// A true promotion would change the size of the argument.
// Instead, pretend this is an int. If FP objects are not
// passed the same as ints, the original type should be Legal
// and we should not get here.
Op = DAG.getNode(ISD::BIT_CONVERT,
VT==MVT::f32 ? MVT::i32 :
(VT==MVT::f64 ? MVT::i64 :
MVT::Other),
Op);
}
Ops.push_back(Op);
Ops.push_back(DAG.getConstant(Flags, MVT::i32));