X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMRegisterInfo.cpp;h=920bb5d3af3f66e6d1294d21a7bc1afa16649b36;hb=f3e1b1d716ccff0ccb387802349c5a813f223241;hp=c47bb45440b505e7939383f571e309f2647ed6c5;hpb=9208bbf5c9f12099de3f0a0716c33b0759075f03;p=oota-llvm.git

diff --git a/lib/Target/MRegisterInfo.cpp b/lib/Target/MRegisterInfo.cpp
index c47bb45440b..920bb5d3af3 100644
--- a/lib/Target/MRegisterInfo.cpp
+++ b/lib/Target/MRegisterInfo.cpp
@@ -1,32 +1,64 @@
 //===- MRegisterInfo.cpp - Target Register Information Implementation -----===//
 //
+//                     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 implements the MRegisterInfo interface.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/MRegisterInfo.h"
 
-MRegisterInfo::MRegisterInfo(const MRegisterDesc *D, unsigned NR,
-                             regclass_iterator RCB, regclass_iterator RCE)
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineLocation.h"
+
+using namespace llvm;
+
+MRegisterInfo::MRegisterInfo(const TargetRegisterDesc *D, unsigned NR,
+                             regclass_iterator RCB, regclass_iterator RCE,
+                             int CFSO, int CFDO)
   : Desc(D), NumRegs(NR), RegClassBegin(RCB), RegClassEnd(RCE) {
   assert(NumRegs < FirstVirtualRegister &&
          "Target has too many physical registers!");
 
-  PhysRegClasses = new const TargetRegisterClass*[NumRegs];
-  for (unsigned i = 0; i != NumRegs; ++i)
-    PhysRegClasses[i] = 0;
+  CallFrameSetupOpcode   = CFSO;
+  CallFrameDestroyOpcode = CFDO;
+}
+
+MRegisterInfo::~MRegisterInfo() {}
 
-  // Fill in the PhysRegClasses map
+std::vector<bool> MRegisterInfo::getAllocatableSet(MachineFunction &MF) const {
+  std::vector<bool> Allocatable(NumRegs);
   for (MRegisterInfo::regclass_iterator I = regclass_begin(),
-         E = regclass_end(); I != E; ++I)
-    for (unsigned i=0; i < (*I)->getNumRegs(); ++i) {
-      assert(PhysRegClasses[(*I)->getRegister(i)] == 0 &&
-             "Register in more than one class?");
-      PhysRegClasses[(*I)->getRegister(i)] = *I;
-    }
+         E = regclass_end(); I != E; ++I) {
+    const TargetRegisterClass *RC = *I;
+    for (TargetRegisterClass::iterator I = RC->allocation_order_begin(MF),
+           E = RC->allocation_order_end(MF); I != E; ++I)
+      Allocatable[*I] = true;
+  }
+  return Allocatable;
 }
 
+/// getLocation - This method should return the actual location of a frame
+/// variable given the frame index.  The location is returned in ML.
+/// Subclasses should override this method for special handling of frame
+/// variables and then call MRegisterInfo::getLocation for the default action.
+void MRegisterInfo::getLocation(MachineFunction &MF, unsigned Index,
+                        MachineLocation &ML) const {
+  MachineFrameInfo *MFI = MF.getFrameInfo();
+  ML.set(getFrameRegister(MF),
+         MFI->getObjectOffset(Index) + MFI->getStackSize());
+}
 
-MRegisterInfo::~MRegisterInfo() {
-  delete[] PhysRegClasses;
+/// getInitialFrameState - Returns a list of machine moves that are assumed
+/// on entry to a function.
+void
+MRegisterInfo::getInitialFrameState(std::vector<MachineMove *> &Moves) const {
+  // Default is to do nothing.
 }
+