make MachineFunction keep track of its ID and make

MachineFunctionAnalysis dole them out, instead of having
AsmPrinter do both.  Have the AsmPrinter::SetupMachineFunction
method set the 'AsmPrinter::MF' variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94509 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/AsmPrinter.h

@@ -19,7 +19,6 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/Support/DebugLoc.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/ADT/DenseMap.h"
 
 namespace llvm {
   class BlockAddress;
@@ -62,13 +61,6 @@ namespace llvm {
   class AsmPrinter : public MachineFunctionPass {
     static char ID;
 
-    /// FunctionNumber - This provides a unique ID for each function emitted in
-    /// this translation unit.  It is autoincremented by SetupMachineFunction,
-    /// and can be accessed with getFunctionNumber() and 
-    /// IncrementFunctionNumber().
-    ///
-    unsigned FunctionNumber;
-
     // GCMetadataPrinters - The garbage collection metadata printer table.
     typedef DenseMap<GCStrategy*,GCMetadataPrinter*> gcp_map_type;
     typedef gcp_map_type::iterator gcp_iterator;
@@ -168,7 +160,7 @@ namespace llvm {
 
     /// getFunctionNumber - Return a unique ID for the current function.
     ///
-    unsigned getFunctionNumber() const { return FunctionNumber; }
+    unsigned getFunctionNumber() const;
     
   protected:
     /// getAnalysisUsage - Record analysis usage.
@@ -219,11 +211,6 @@ namespace llvm {
     /// is being processed from runOnMachineFunction.
     void SetupMachineFunction(MachineFunction &MF);
     
-    /// IncrementFunctionNumber - Increase Function Number.  AsmPrinters should
-    /// not normally call this, as the counter is automatically bumped by
-    /// SetupMachineFunction.
-    void IncrementFunctionNumber() { FunctionNumber++; }
-    
     /// EmitConstantPool - Print to the current output stream assembly
     /// representations of the constants in the constant pool MCP. This is
     /// used to print out constants which have been "spilled to memory" by

include/llvm/CodeGen/MachineFunction.h

@@ -112,6 +112,11 @@ class MachineFunction {
   // Tracks debug locations.
   DebugLocTracker DebugLocInfo;
 
+  /// FunctionNumber - This provides a unique ID for each function emitted in
+  /// this translation unit.
+  ///
+  unsigned FunctionNumber;
+  
   // The alignment of the function.
   unsigned Alignment;
 
@@ -119,13 +124,17 @@ class MachineFunction {
   void operator=(const MachineFunction&);   // intentionally unimplemented
 
 public:
-  MachineFunction(Function *Fn, const TargetMachine &TM);
+  MachineFunction(Function *Fn, const TargetMachine &TM, unsigned FunctionNum);
   ~MachineFunction();
 
   /// getFunction - Return the LLVM function that this machine code represents
   ///
   Function *getFunction() const { return Fn; }
 
+  /// getFunctionNumber - Return a unique ID for the current function.
+  ///
+  unsigned getFunctionNumber() const { return FunctionNumber; }
+  
   /// getTarget - Return the target machine this machine code is compiled with
   ///
   const TargetMachine &getTarget() const { return Target; }

include/llvm/CodeGen/MachineFunctionAnalysis.h

@@ -28,7 +28,7 @@ private:
   const TargetMachine &TM;
   CodeGenOpt::Level OptLevel;
   MachineFunction *MF;
-
+  unsigned NextFnNum;
 public:
   static char ID;
   explicit MachineFunctionAnalysis(const TargetMachine &tm,
@@ -39,6 +39,7 @@ public:
   CodeGenOpt::Level getOptLevel() const { return OptLevel; }
 
 private:
+  virtual bool doInitialization(Module &) { NextFnNum = 1; return false; }
   virtual bool runOnFunction(Function &F);
   virtual void releaseMemory();
   virtual void getAnalysisUsage(AnalysisUsage &AU) const;

lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@@ -64,7 +64,7 @@ static bool getVerboseAsm(bool VDef) {
 char AsmPrinter::ID = 0;
 AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
                        const MCAsmInfo *T, bool VDef)
-  : MachineFunctionPass(&ID), FunctionNumber(0), O(o),
+  : MachineFunctionPass(&ID), O(o),
     TM(tm), MAI(T), TRI(tm.getRegisterInfo()),
 
     OutContext(*new MCContext()),
@@ -87,6 +87,12 @@ AsmPrinter::~AsmPrinter() {
   delete &OutContext;
 }
 
+/// getFunctionNumber - Return a unique ID for the current function.
+///
+unsigned AsmPrinter::getFunctionNumber() const {
+  return MF->getFunctionNumber();
+}
+
 TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
   return TM.getTargetLowering()->getObjFileLowering();
 }
@@ -359,9 +365,9 @@ bool AsmPrinter::doFinalization(Module &M) {
 }
 
 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
+  this->MF = &MF;
   // Get the function symbol.
   CurrentFnSym = GetGlobalValueSymbol(MF.getFunction());
-  IncrementFunctionNumber();
 
   if (VerboseAsm)
     LI = &getAnalysis<MachineLoopInfo>();

lib/CodeGen/MachineFunction.cpp

@@ -70,9 +70,9 @@ FunctionPass *llvm::createMachineFunctionPrinterPass(raw_ostream &OS,
   return new Printer(OS, Banner);
 }
 
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 // MachineFunction implementation
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 
 // Out of line virtual method.
 MachineFunctionInfo::~MachineFunctionInfo() {}
@@ -81,8 +81,8 @@ void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
   MBB->getParent()->DeleteMachineBasicBlock(MBB);
 }
 
-MachineFunction::MachineFunction(Function *F,
-                                 const TargetMachine &TM)
+MachineFunction::MachineFunction(Function *F, const TargetMachine &TM,
+                                 unsigned FunctionNum)
   : Fn(F), Target(TM) {
   if (TM.getRegisterInfo())
     RegInfo = new (Allocator.Allocate<MachineRegisterInfo>())
@@ -95,7 +95,7 @@ MachineFunction::MachineFunction(Function *F,
   ConstantPool = new (Allocator.Allocate<MachineConstantPool>())
                      MachineConstantPool(TM.getTargetData());
   Alignment = TM.getTargetLowering()->getFunctionAlignment(F);
-
+  FunctionNumber = FunctionNum;
   JumpTableInfo = 0;
 }
 

lib/CodeGen/MachineFunctionAnalysis.cpp

@@ -36,7 +36,7 @@ MachineFunctionAnalysis::~MachineFunctionAnalysis() {
 
 bool MachineFunctionAnalysis::runOnFunction(Function &F) {
   assert(!MF && "MachineFunctionAnalysis already initialized!");
-  MF = new MachineFunction(&F, TM);
+  MF = new MachineFunction(&F, TM, NextFnNum++);
   return false;
 }
 

lib/Target/X86/X86CodeEmitter.cpp

@@ -921,7 +921,7 @@ public:
       FunctionType::get(llvm::Type::getVoidTy(getGlobalContext()), false);
     DummyF = Function::Create(FTy, GlobalValue::InternalLinkage);
     DummyTD = new TargetData("");
-    DummyMF = new MachineFunction(DummyF, TM);
+    DummyMF = new MachineFunction(DummyF, TM, 0);
     DummyMBB = DummyMF->CreateMachineBasicBlock();
 
     InstrEmitter = new MCSingleInstructionCodeEmitter();