From ffe64b1ee5a234b9599e2ad8525249a70a96e04c Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 7 Jul 2010 16:47:08 +0000
Subject: Give FunctionLoweringInfo an MBB member, avoiding the need to pass it
 around everywhere, and also give it an InsertPt member, to enable isel to
 operate at an arbitrary position within a block, rather than just appending
 to a block.

llvm-svn: 107791
---
 llvm/include/llvm/CodeGen/FastISel.h             | 11 +----------
 llvm/include/llvm/CodeGen/FunctionLoweringInfo.h |  7 +++++++
 llvm/include/llvm/CodeGen/SelectionDAGISel.h     | 13 ++++++-------
 3 files changed, 14 insertions(+), 17 deletions(-)

(limited to 'llvm/include')

diff --git a/llvm/include/llvm/CodeGen/FastISel.h b/llvm/include/llvm/CodeGen/FastISel.h
index c5c457db0c1..2067ca81325 100644
--- a/llvm/include/llvm/CodeGen/FastISel.h
+++ b/llvm/include/llvm/CodeGen/FastISel.h
@@ -44,7 +44,6 @@ class TargetRegisterInfo;
 /// lowering, but runs quickly.
 class FastISel {
 protected:
-  MachineBasicBlock *MBB;
   DenseMap<const Value *, unsigned> LocalValueMap;
   FunctionLoweringInfo &FuncInfo;
   MachineRegisterInfo &MRI;
@@ -62,18 +61,10 @@ public:
   /// startNewBlock - Set the current block to which generated machine
   /// instructions will be appended, and clear the local CSE map.
   ///
-  void startNewBlock(MachineBasicBlock *mbb) {
-    setCurrentBlock(mbb);
+  void startNewBlock() {
     LocalValueMap.clear();
   }
 
-  /// setCurrentBlock - Set the current block to which generated machine
-  /// instructions will be appended.
-  ///
-  void setCurrentBlock(MachineBasicBlock *mbb) {
-    MBB = mbb;
-  }
-
   /// getCurDebugLoc() - Return current debug location information.
   DebugLoc getCurDebugLoc() const { return DL; }
 
diff --git a/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h b/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
index 011d42617d6..da8a3ff7c6a 100644
--- a/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
+++ b/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
@@ -25,6 +25,7 @@
 #endif
 #include "llvm/CodeGen/ValueTypes.h"
 #include "llvm/CodeGen/ISDOpcodes.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/Support/CallSite.h"
 #include <vector>
 
@@ -80,6 +81,12 @@ public:
   /// function arguments that are inserted after scheduling is completed.
   SmallVector<MachineInstr*, 8> ArgDbgValues;
 
+  /// MBB - The current block.
+  MachineBasicBlock *MBB;
+
+  /// MBB - The current insert position inside the current block.
+  MachineBasicBlock::iterator InsertPt;
+
 #ifndef NDEBUG
   SmallSet<const Instruction *, 8> CatchInfoLost;
   SmallSet<const Instruction *, 8> CatchInfoFound;
diff --git a/llvm/include/llvm/CodeGen/SelectionDAGISel.h b/llvm/include/llvm/CodeGen/SelectionDAGISel.h
index 16159947410..01d05ddac11 100644
--- a/llvm/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAGISel.h
@@ -280,15 +280,14 @@ private:
   SDNode *MorphNode(SDNode *Node, unsigned TargetOpc, SDVTList VTs,
                     const SDValue *Ops, unsigned NumOps, unsigned EmitNodeInfo);
   
-  void PrepareEHLandingPad(MachineBasicBlock *BB);
+  void PrepareEHLandingPad();
   void SelectAllBasicBlocks(const Function &Fn);
-  void FinishBasicBlock(MachineBasicBlock *BB);
+  void FinishBasicBlock();
 
-  MachineBasicBlock *SelectBasicBlock(MachineBasicBlock *BB,
-                                      BasicBlock::const_iterator Begin,
-                                      BasicBlock::const_iterator End,
-                                      bool &HadTailCall);
-  MachineBasicBlock *CodeGenAndEmitDAG(MachineBasicBlock *BB);
+  void SelectBasicBlock(BasicBlock::const_iterator Begin,
+                        BasicBlock::const_iterator End,
+                        bool &HadTailCall);
+  void CodeGenAndEmitDAG();
   void LowerArguments(const BasicBlock *BB);
   
   void ComputeLiveOutVRegInfo();
-- 
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