From afb2dd43de61f4585e75d1f3ab93a9ac4b3b7592 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 25 Aug 2005 00:43:01 +0000
Subject: [PATCH] add a new TargetFrameIndex node

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23035 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/SelectionDAG.h       |  3 ++-
 include/llvm/CodeGen/SelectionDAGNodes.h  |  8 +++++---
 lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 14 +++++++++++++-
 3 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index 32049688eb3..02af6d30cc2 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -99,6 +99,7 @@ public:
   SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
   SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
   SDOperand getFrameIndex(int FI, MVT::ValueType VT);
+  SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT);
   SDOperand getConstantPool(unsigned CPIdx, MVT::ValueType VT);
   SDOperand getBasicBlock(MachineBasicBlock *MBB);
   SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT);
@@ -307,7 +308,7 @@ private:
   std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> Constants;
   std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstants;
   std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> ConstantFPs;
-  std::map<int, SDNode*> FrameIndices;
+  std::map<int, SDNode*> FrameIndices, TargetFrameIndices;
   std::map<unsigned, SDNode*> ConstantPoolIndices;
   std::map<MachineBasicBlock *, SDNode*> BBNodes;
   std::vector<SDNode*> ValueTypeNodes;
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index 5681a36f5c4..319403ca3cb 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -65,6 +65,7 @@ namespace ISD {
     // anything else with this node, and this is valid in the target-specific
     // dag, turning into a GlobalAddress operand.
     TargetGlobalAddress,
+    TargetFrameIndex,
 
     // CopyToReg - This node has three operands: a chain, a register number to
     // set to this value, and a value.  
@@ -812,15 +813,16 @@ class FrameIndexSDNode : public SDNode {
   int FI;
 protected:
   friend class SelectionDAG;
-  FrameIndexSDNode(int fi, MVT::ValueType VT)
-    : SDNode(ISD::FrameIndex, VT), FI(fi) {}
+  FrameIndexSDNode(int fi, MVT::ValueType VT, bool isTarg)
+    : SDNode(isTarg ? ISD::TargetFrameIndex : ISD::FrameIndex, VT), FI(fi) {}
 public:
 
   int getIndex() const { return FI; }
 
   static bool classof(const FrameIndexSDNode *) { return true; }
   static bool classof(const SDNode *N) {
-    return N->getOpcode() == ISD::FrameIndex;
+    return N->getOpcode() == ISD::FrameIndex ||
+           N->getOpcode() == ISD::TargetFrameIndex;
   }
 };
 
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 97c28521c7b..68ef11e8bf9 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -261,6 +261,9 @@ void SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
   case ISD::FrameIndex:
     FrameIndices.erase(cast<FrameIndexSDNode>(N)->getIndex());
     break;
+  case ISD::TargetFrameIndex:
+    TargetFrameIndices.erase(cast<FrameIndexSDNode>(N)->getIndex());
+    break;
   case ISD::ConstantPool:
     ConstantPoolIndices.erase(cast<ConstantPoolSDNode>(N)->getIndex());
     break;
@@ -433,7 +436,15 @@ SDOperand SelectionDAG::getTargetGlobalAddress(const GlobalValue *GV,
 SDOperand SelectionDAG::getFrameIndex(int FI, MVT::ValueType VT) {
   SDNode *&N = FrameIndices[FI];
   if (N) return SDOperand(N, 0);
-  N = new FrameIndexSDNode(FI, VT);
+  N = new FrameIndexSDNode(FI, VT, false);
+  AllNodes.push_back(N);
+  return SDOperand(N, 0);
+}
+
+SDOperand SelectionDAG::getTargetFrameIndex(int FI, MVT::ValueType VT) {
+  SDNode *&N = TargetFrameIndices[FI];
+  if (N) return SDOperand(N, 0);
+  N = new FrameIndexSDNode(FI, VT, true);
   AllNodes.push_back(N);
   return SDOperand(N, 0);
 }
@@ -2071,6 +2082,7 @@ const char *SDNode::getOperationName(const SelectionDAG *G) const {
   case ISD::GlobalAddress: return "GlobalAddress";
   case ISD::TargetGlobalAddress: return "TargetGlobalAddress";
   case ISD::FrameIndex:    return "FrameIndex";
+  case ISD::TargetFrameIndex: return "TargetFrameIndex";
   case ISD::BasicBlock:    return "BasicBlock";
   case ISD::Register:      return "Register";
   case ISD::ExternalSymbol: return "ExternalSymbol";
-- 
2.34.1