X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMRegisterInfo.cpp;h=920bb5d3af3f66e6d1294d21a7bc1afa16649b36;hb=f3e1b1d716ccff0ccb387802349c5a813f223241;hp=6f358152638420f875c4c8b05c8573f088a05b56;hpb=b576c94c15af9a440f69d9d03c2afead7971118c;p=oota-llvm.git

diff --git a/lib/Target/MRegisterInfo.cpp b/lib/Target/MRegisterInfo.cpp
index 6f358152638..920bb5d3af3 100644
--- a/lib/Target/MRegisterInfo.cpp
+++ b/lib/Target/MRegisterInfo.cpp
@@ -1,10 +1,10 @@
 //===- 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.
@@ -13,31 +13,52 @@
 
 #include "llvm/Target/MRegisterInfo.h"
 
-MRegisterInfo::MRegisterInfo(const MRegisterDesc *D, unsigned NR,
+#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)
+                             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;
-
-  // Fill in the PhysRegClasses map
-  for (MRegisterInfo::regclass_iterator I = regclass_begin(),
-         E = regclass_end(); I != E; ++I)
-    for (unsigned i = 0, e = (*I)->getNumRegs(); i != e; ++i) {
-      unsigned Reg = (*I)->getRegister(i);
-      assert(PhysRegClasses[Reg] == 0 && "Register in more than one class?");
-      PhysRegClasses[Reg] = *I;
-    }
-
   CallFrameSetupOpcode   = CFSO;
   CallFrameDestroyOpcode = CFDO;
 }
 
+MRegisterInfo::~MRegisterInfo() {}
 
-MRegisterInfo::~MRegisterInfo() {
-  delete[] PhysRegClasses;
+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) {
+    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());
 }
+
+/// 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.
+}
+