Changes in directory llvm/lib/CodeGen/SelectionDAG:
LegalizeDAG.cpp updated: 1.342 -> 1.343
---
Log message:
Expand INSERT_VECTOR_ELT to store vec, sp; store elt, sp+k; vec = load sp;
---
Diffs of the changes: (+24 -1)
LegalizeDAG.cpp | 25 ++++++++++++++++++++++++-
1 files changed, 24 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.342
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.343
--- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.342 Tue Mar 28 14:24:43 2006
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Thu Mar 30 19:27:51 2006
@@ -798,7 +798,30 @@
// with a "move to register" or "extload into register" instruction, then
// permute it into place, if the idx is a constant and if the idx is
// supported by the target.
- assert(0 && "INSERT_VECTOR_ELT expand not supported yet!");
+ SDOperand StackPtr = CreateStackTemporary(Tmp1.getValueType());
+ // Store the vector.
+ SDOperand Ch = DAG.getNode(ISD::STORE, MVT::Other, DAG.getEntryNode(),
+ Tmp1, StackPtr, DAG.getSrcValue(NULL));
+
+ // Truncate or zero extend offset to target pointer type.
+ MVT::ValueType IntPtr = TLI.getPointerTy();
+ if (Tmp3.getValueType() > IntPtr)
+ Tmp3 = DAG.getNode(ISD::TRUNCATE, IntPtr, Tmp3);
+ else
+ Tmp3 = DAG.getNode(ISD::ZERO_EXTEND, IntPtr, Tmp3);
+
+ // Add the offset to the index.
+ unsigned EltSize = MVT::getSizeInBits(Result.getValueType())/8;
+ Tmp3 = DAG.getNode(ISD::MUL, Tmp3.getValueType(), Tmp3,
+ DAG.getConstant(EltSize, Tmp3.getValueType()));
+ SDOperand StackPtr2 =
+ DAG.getNode(ISD::ADD, Tmp3.getValueType(), Tmp3, StackPtr);
+ // Store the scalar value.
+ Ch = DAG.getNode(ISD::STORE, MVT::Other, Ch,
+ Tmp2, StackPtr2, DAG.getSrcValue(NULL));
+ // Load the updated vector.
+ Result = DAG.getLoad(Result.getValueType(), Ch, StackPtr,
+ DAG.getSrcValue(NULL));
break;
}
}
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