Changes in directory llvm/include/llvm/CodeGen:
SelectionDAGNodes.h updated: 1.174 -> 1.175
---
Log message:
Introduce new UnarySDNode/BinarySDNode/TernarySDNode nodes, which coallocate
their operands with the node itself. This reduces malloc traffic for operand
lists. This reduces isel time on kc++ from 2.6164 to 2.5570s, about 2.3%.
---
Diffs of the changes: (+43 -0)
SelectionDAGNodes.h | 43 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+)
Index: llvm/include/llvm/CodeGen/SelectionDAGNodes.h
diff -u llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1.174
llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1.175
--- llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1.174 Sun Feb 4 02:13:53 2007
+++ llvm/include/llvm/CodeGen/SelectionDAGNodes.h Sun Feb 4 02:35:21 2007
@@ -995,6 +995,49 @@
return Val->hasNUsesOfValue(1, ResNo);
}
+/// UnarySDNode - This class is used for single-operand SDNodes. This is
solely
+/// to allow co-allocation of node operands with the node itself.
+class UnarySDNode : public SDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+ SDOperand Op;
+public:
+ UnarySDNode(unsigned Opc, SDVTList VTs, SDOperand X)
+ : SDNode(Opc, VTs), Op(X) {
+ InitOperands(&Op, 1);
+ }
+};
+
+/// BinarySDNode - This class is used for two-operand SDNodes. This is solely
+/// to allow co-allocation of node operands with the node itself.
+class BinarySDNode : public SDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+ SDOperand Ops[2];
+public:
+ BinarySDNode(unsigned Opc, SDVTList VTs, SDOperand X, SDOperand Y)
+ : SDNode(Opc, VTs) {
+ Ops[0] = X;
+ Ops[1] = Y;
+ InitOperands(Ops, 2);
+ }
+};
+
+/// TernarySDNode - This class is used for three-operand SDNodes. This is
solely
+/// to allow co-allocation of node operands with the node itself.
+class TernarySDNode : public SDNode {
+ virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
+ SDOperand Ops[3];
+public:
+ TernarySDNode(unsigned Opc, SDVTList VTs, SDOperand X, SDOperand Y,
+ SDOperand Z)
+ : SDNode(Opc, VTs) {
+ Ops[0] = X;
+ Ops[1] = Y;
+ Ops[2] = Z;
+ InitOperands(Ops, 3);
+ }
+};
+
+
/// HandleSDNode - This class is used to form a handle around another node that
/// is persistant and is updated across invocations of replaceAllUsesWith on
its
/// operand. This node should be directly created by end-users and not added
to
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