FP EXTLOAD is not support on all archs, expand to LOAD and FP_EXTEND
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22319 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 0f16843..bf97fea 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -522,6 +522,15 @@
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
case TargetLowering::Expand:
+ //f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND
+ if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) {
+ SDOperand Load = DAG.getLoad(SrcVT, Tmp1, Tmp2, Node->getOperand(2));
+ Result =
+ DAG.getNode(ISD::FP_EXTEND, Node->getValueType(0), Load, SrcVT);
+ if (Op.ResNo)
+ return Load.getValue(1);
+ return Result;
+ }
assert(Node->getOpcode() != ISD::EXTLOAD &&
"EXTLOAD should always be supported!");
// Turn the unsupported load into an EXTLOAD followed by an explicit