X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FMachineFunction.cpp;h=30896172883e431b5d45ed6305b243900a359d00;hb=63e3cd4e0f3731d6801ac24199652e4d7b4b3729;hp=c35674a49b1244c02fde2ae9d9f97ab84be495b8;hpb=ca0ed744852a7d9625572fbb793f65e81225a3e8;p=oota-llvm.git

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index c35674a49b1..30896172883 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -2,8 +2,8 @@
 //
 //                     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.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -14,12 +14,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DerivedTypes.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/SSARegMap.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetLowering.h"
@@ -111,22 +111,23 @@ MachineBasicBlock* ilist_traits<MachineBasicBlock>::createSentinel() {
 }
 
 void ilist_traits<MachineBasicBlock>::transferNodesFromList(
-  iplist<MachineBasicBlock, ilist_traits<MachineBasicBlock> >& toList,
-  ilist_iterator<MachineBasicBlock> first,
-  ilist_iterator<MachineBasicBlock> last) {
-  if (Parent != toList.Parent)
-    for (; first != last; ++first)
-      first->Parent = toList.Parent;
+            iplist<MachineBasicBlock, ilist_traits<MachineBasicBlock> >& toList,
+            ilist_iterator<MachineBasicBlock> first,
+            ilist_iterator<MachineBasicBlock> last) {
+  // If splicing withing the same function, no change.
+  if (Parent == toList.Parent) return;
+  
+  for (; first != last; ++first)
+    first->setParent(toList.Parent);
 }
 
 MachineFunction::MachineFunction(const Function *F,
                                  const TargetMachine &TM)
   : Annotation(MF_AID), Fn(F), Target(TM) {
-  SSARegMapping = new SSARegMap();
+  RegInfo = new MachineRegisterInfo(*TM.getRegisterInfo());
   MFInfo = 0;
-  FrameInfo = new MachineFrameInfo();
+  FrameInfo = new MachineFrameInfo(*TM.getFrameInfo());
   ConstantPool = new MachineConstantPool(TM.getTargetData());
-  UsedPhysRegs.resize(TM.getRegisterInfo()->getNumRegs());
   
   // Set up jump table.
   const TargetData &TD = *TM.getTargetData();
@@ -141,7 +142,7 @@ MachineFunction::MachineFunction(const Function *F,
 
 MachineFunction::~MachineFunction() {
   BasicBlocks.clear();
-  delete SSARegMapping;
+  delete RegInfo;
   delete MFInfo;
   delete FrameInfo;
   delete ConstantPool;
@@ -206,13 +207,14 @@ void MachineFunction::print(std::ostream &OS) const {
   // Print Constant Pool
   getConstantPool()->print(OS);
   
-  const MRegisterInfo *MRI = getTarget().getRegisterInfo();
+  const TargetRegisterInfo *TRI = getTarget().getRegisterInfo();
   
-  if (!livein_empty()) {
+  if (!RegInfo->livein_empty()) {
     OS << "Live Ins:";
-    for (livein_iterator I = livein_begin(), E = livein_end(); I != E; ++I) {
-      if (MRI)
-        OS << " " << MRI->getName(I->first);
+    for (MachineRegisterInfo::livein_iterator
+         I = RegInfo->livein_begin(), E = RegInfo->livein_end(); I != E; ++I) {
+      if (TRI)
+        OS << " " << TRI->getName(I->first);
       else
         OS << " Reg #" << I->first;
       
@@ -221,11 +223,12 @@ void MachineFunction::print(std::ostream &OS) const {
     }
     OS << "\n";
   }
-  if (!liveout_empty()) {
+  if (!RegInfo->liveout_empty()) {
     OS << "Live Outs:";
-    for (liveout_iterator I = liveout_begin(), E = liveout_end(); I != E; ++I)
-      if (MRI)
-        OS << " " << MRI->getName(*I);
+    for (MachineRegisterInfo::liveout_iterator
+         I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I)
+      if (TRI)
+        OS << " " << TRI->getName(*I);
       else
         OS << " Reg #" << *I;
     OS << "\n";
@@ -324,15 +327,23 @@ MachineFunction& MachineFunction::get(const Function *F)
   return *mc;
 }
 
-void MachineFunction::clearSSARegMap() {
-  delete SSARegMapping;
-  SSARegMapping = 0;
-}
-
 //===----------------------------------------------------------------------===//
 //  MachineFrameInfo implementation
 //===----------------------------------------------------------------------===//
 
+/// CreateFixedObject - Create a new object at a fixed location on the stack.
+/// All fixed objects should be created before other objects are created for
+/// efficiency. By default, fixed objects are immutable. This returns an
+/// index with a negative value.
+///
+int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset,
+                                        bool Immutable) {
+  assert(Size != 0 && "Cannot allocate zero size fixed stack objects!");
+  Objects.insert(Objects.begin(), StackObject(Size, 1, SPOffset, Immutable));
+  return -++NumFixedObjects;
+}
+
+
 void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{
   int ValOffset = MF.getTarget().getFrameInfo()->getOffsetOfLocalArea();