Avoid DIDescriptor::getNode(). Use overloaded operators instead.

[oota-llvm.git] / include / llvm / CodeGen / FastISel.h

diff --git a/include/llvm/CodeGen/FastISel.h b/include/llvm/CodeGen/FastISel.h
index 202efe2f9f0a8354e71840b1056ceb49f26d5c87..2341f2302a4b0b87a3f2dd15699786dc0efae818 100644 (file)
--- a/include/llvm/CodeGen/FastISel.h
+++ b/include/llvm/CodeGen/FastISel.h
@@ -28,6 +28,7 @@ class Instruction;
 class MachineBasicBlock;
 class MachineConstantPool;
 class MachineFunction;
+class MachineInstr;
 class MachineFrameInfo;
 class MachineRegisterInfo;
 class TargetData;
@@ -46,6 +47,7 @@ protected:
   DenseMap<const Value *, unsigned> &ValueMap;
   DenseMap<const BasicBlock *, MachineBasicBlock *> &MBBMap;
   DenseMap<const AllocaInst *, int> &StaticAllocaMap;
+  std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate;
 #ifndef NDEBUG
   SmallSet<const Instruction *, 8> &CatchInfoLost;
 #endif
@@ -58,6 +60,7 @@ protected:
   const TargetData &TD;
   const TargetInstrInfo &TII;
   const TargetLowering &TLI;
+  bool IsBottomUp;
 
 public:
   /// startNewBlock - Set the current block to which generated machine
@@ -111,7 +114,8 @@ protected:
   FastISel(MachineFunction &mf,
            DenseMap<const Value *, unsigned> &vm,
            DenseMap<const BasicBlock *, MachineBasicBlock *> &bm,
-           DenseMap<const AllocaInst *, int> &am
+           DenseMap<const AllocaInst *, int> &am,
+           std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate
 #ifndef NDEBUG
            , SmallSet<const Instruction *, 8> &cil
 #endif
@@ -300,6 +304,19 @@ private:
   bool SelectBitCast(const User *I);
   
   bool SelectCast(const User *I, unsigned Opcode);
+
+  /// HandlePHINodesInSuccessorBlocks - Handle PHI nodes in successor blocks.
+  /// Emit code to ensure constants are copied into registers when needed.
+  /// Remember the virtual registers that need to be added to the Machine PHI
+  /// nodes as input.  We cannot just directly add them, because expansion
+  /// might result in multiple MBB's for one BB.  As such, the start of the
+  /// BB might correspond to a different MBB than the end.
+  bool HandlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB);
+
+  /// materializeRegForValue - Helper for getRegForVale. This function is
+  /// called when the value isn't already available in a register and must
+  /// be materialized with new instructions.
+  unsigned materializeRegForValue(const Value *V, MVT VT);
 };
 
 }