X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FSparcV9%2FSparcV9CodeEmitter.h;h=b5e3e2175455b91a50e71175669cc3db634bf86c;hb=4548a0ed32949ab38310e103af5d85650ecd2a5d;hp=d9a03e5b2314f6d62965c68cddcf54918095c162;hpb=f47d9c28d9b395a0c0b14ceb07124c39ab13e493;p=oota-llvm.git

diff --git a/lib/Target/SparcV9/SparcV9CodeEmitter.h b/lib/Target/SparcV9/SparcV9CodeEmitter.h
index d9a03e5b231..b5e3e217545 100644
--- a/lib/Target/SparcV9/SparcV9CodeEmitter.h
+++ b/lib/Target/SparcV9/SparcV9CodeEmitter.h
@@ -1,5 +1,16 @@
 //===-- SparcV9CodeEmitter.h ------------------------------------*- C++ -*-===//
-// 
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Target-specific portions of the machine code emitter for the SparcV9.
+// This class interfaces with the JIT's Emitter in order to turn MachineInstrs
+// into words of binary machine code. Its code is partially generated by
+// TableGen's CodeEmitterGenerator.
 //
 //===----------------------------------------------------------------------===//
 
@@ -11,6 +22,8 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/Target/TargetMachine.h"
 
+namespace llvm {
+
 class GlobalValue;
 class MachineInstr;
 class MachineOperand;
@@ -18,39 +31,57 @@ class MachineOperand;
 class SparcV9CodeEmitter : public MachineFunctionPass {
   TargetMachine &TM;
   MachineCodeEmitter &MCE;
-  BasicBlock *currBB;
+  const BasicBlock *currBB;
 
   // Tracks which instruction references which BasicBlock
-  std::vector<std::pair<BasicBlock*,
+  std::vector<std::pair<const BasicBlock*,
                         std::pair<unsigned*,MachineInstr*> > > BBRefs;
   // Tracks where each BasicBlock starts
-  std::map<BasicBlock*, long> BBLocations;
-
-  // Tracks locations of Constants which are laid out in memory (e.g. FP)
-  // But we also need to map Constants to ConstantPool indices
-  std::map<const Constant*, unsigned> ConstantMap;
+  std::map<const BasicBlock*, long> BBLocations;
 
 public:
   SparcV9CodeEmitter(TargetMachine &T, MachineCodeEmitter &M);
-  ~SparcV9CodeEmitter();
+  ~SparcV9CodeEmitter() {}
+
+  const char *getPassName() const { return "SparcV9 Machine Code Emitter"; }
 
+  /// runOnMachineFunction - emits the given machine function to memory.
+  ///
   bool runOnMachineFunction(MachineFunction &F);
+
+  /// emitWord - writes out the given 32-bit value to memory at the current PC.
+  ///
   void emitWord(unsigned Val);
-    
-  /// Function generated by the CodeEmitterGenerator using TableGen
+
+  /// getBinaryCodeForInstr - This function, generated by the
+  /// CodeEmitterGenerator using TableGen, produces the binary encoding for
+  /// machine instructions.
   ///
   unsigned getBinaryCodeForInstr(MachineInstr &MI);
 
-private:    
+private:
+  /// getMachineOpValue -
+  ///
   int64_t getMachineOpValue(MachineInstr &MI, MachineOperand &MO);
-  unsigned getValueBit(int64_t Val, unsigned bit);
+
+  /// emitBasicBlock -
+  ///
   void emitBasicBlock(MachineBasicBlock &MBB);
+
+  /// getValueBit -
+  ///
+  unsigned getValueBit(int64_t Val, unsigned bit);
+
+  /// getGlobalAddress -
+  ///
   void* getGlobalAddress(GlobalValue *V, MachineInstr &MI,
                          bool isPCRelative);
-  bool isFPInstr(MachineInstr &MI);
-  unsigned getRealRegNum(unsigned fakeReg, unsigned regClass,
-                         MachineInstr &MI);
+  /// emitFarCall -
+  ///
+  unsigned getRealRegNum(unsigned fakeReg, MachineInstr &MI);
 
 };
 
+} // End llvm namespace
+
 #endif