From 227c3d355b017393963a690f9f27d1de7fa359bc Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 28 Oct 2002 01:12:41 +0000
Subject: [PATCH] Move machine code generation/destruction passes out of
 Sparc.cpp because they are generic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4310 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineFunction.cpp             | 56 +++++++++++++++++++++
 lib/Target/SparcV9/SparcV9TargetMachine.cpp | 46 +----------------
 2 files changed, 58 insertions(+), 44 deletions(-)

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 0e940f88be1..39fa913015b 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -9,11 +9,13 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineInstr.h"  // For debug output
 #include "llvm/CodeGen/MachineCodeForBasicBlock.h"
+#include "llvm/CodeGen/MachineCodeForInstruction.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/MachineFrameInfo.h"
 #include "llvm/Target/MachineCacheInfo.h"
 #include "llvm/Function.h"
 #include "llvm/iOther.h"
+#include "llvm/Pass.h"
 #include <limits.h>
 
 const int INVALID_FRAME_OFFSET = INT_MAX; // std::numeric_limits<int>::max();
@@ -21,6 +23,60 @@ const int INVALID_FRAME_OFFSET = INT_MAX; // std::numeric_limits<int>::max();
 static AnnotationID MCFM_AID(
                  AnnotationManager::getID("CodeGen::MachineCodeForFunction"));
 
+
+//===---------------------------------------------------------------------===//
+// Code generation/destruction passes
+//===---------------------------------------------------------------------===//
+
+namespace {
+  class ConstructMachineFunction : public FunctionPass {
+    TargetMachine &Target;
+  public:
+    ConstructMachineFunction(TargetMachine &T) : Target(T) {}
+    
+    const char *getPassName() const {
+      return "ConstructMachineFunction";
+    }
+    
+    bool runOnFunction(Function &F) {
+      MachineFunction::construct(&F, Target);
+      return false;
+    }
+  };
+
+  struct DestroyMachineFunction : public FunctionPass {
+    const char *getPassName() const { return "FreeMachineFunction"; }
+    
+    static void freeMachineCode(Instruction &I) {
+      MachineCodeForInstruction::destroy(&I);
+    }
+    
+    bool runOnFunction(Function &F) {
+      for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
+        for (BasicBlock::iterator I = FI->begin(), E = FI->end(); I != E; ++I)
+          MachineCodeForInstruction::get(I).dropAllReferences();
+      
+      for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
+        for_each(FI->begin(), FI->end(), freeMachineCode);
+      
+      return false;
+    }
+  };
+}
+
+Pass *createMachineCodeConstructionPass(TargetMachine &Target) {
+  return new ConstructMachineFunction(Target);
+}
+
+Pass *createMachineCodeDestructionPass() {
+  return new DestroyMachineFunction();
+}
+
+
+//===---------------------------------------------------------------------===//
+// MachineFunction implementation
+//===---------------------------------------------------------------------===//
+
 // The next two methods are used to construct and to retrieve
 // the MachineCodeForFunction object for the given function.
 // construct() -- Allocates and initializes for a given function and target
diff --git a/lib/Target/SparcV9/SparcV9TargetMachine.cpp b/lib/Target/SparcV9/SparcV9TargetMachine.cpp
index 7ec0a348b1a..42ffd433f02 100644
--- a/lib/Target/SparcV9/SparcV9TargetMachine.cpp
+++ b/lib/Target/SparcV9/SparcV9TargetMachine.cpp
@@ -113,48 +113,6 @@ UltraSparcFrameInfo::getDynamicAreaOffset(MachineFunction& mcInfo,
   return offset;
 }
 
-//===---------------------------------------------------------------------===//
-// Default code generation passes.
-// 
-// Native code generation for a specified target.
-//===---------------------------------------------------------------------===//
-
-class ConstructMachineCodeForFunction : public FunctionPass {
-  TargetMachine &Target;
-public:
-  ConstructMachineCodeForFunction(TargetMachine &T) : Target(T) {}
-
-  const char *getPassName() const {
-    return "ConstructMachineCodeForFunction";
-  }
-
-  bool runOnFunction(Function &F) {
-    MachineFunction::construct(&F, Target);
-    return false;
-  }
-};
-
-struct FreeMachineCodeForFunction : public FunctionPass {
-  const char *getPassName() const { return "FreeMachineCodeForFunction"; }
-
-  static void freeMachineCode(Instruction &I) {
-    MachineCodeForInstruction::destroy(&I);
-  }
-  
-  bool runOnFunction(Function &F) {
-    for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
-      for (BasicBlock::iterator I = FI->begin(), E = FI->end(); I != E; ++I)
-        MachineCodeForInstruction::get(I).dropAllReferences();
-    
-    for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
-      for_each(FI->begin(), FI->end(), freeMachineCode);
-    
-    return false;
-  }
-};
-
-
-
 //---------------------------------------------------------------------------
 // class UltraSparcMachine 
 // 
@@ -187,7 +145,7 @@ UltraSparc::UltraSparc()
 void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
 {
   // Construct and initialize the MachineFunction object for this fn.
-  PM.add(new ConstructMachineCodeForFunction(*this));
+  PM.add(createMachineCodeConstructionPass(*this));
 
   //Insert empty stackslots in the stack frame of each function
   //so %fp+offset-8 and %fp+offset-16 are empty slots now!
@@ -224,7 +182,7 @@ void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
   // function has been emitted.
   //
   PM.add(getFunctionAsmPrinterPass(Out));
-  PM.add(new FreeMachineCodeForFunction());  // Free stuff no longer needed
+  PM.add(createMachineCodeDestructionPass()); // Free stuff no longer needed
 
   // Emit Module level assembly after all of the functions have been processed.
   PM.add(getModuleAsmPrinterPass(Out));