Some random comment, naming, and format changes.

[oota-llvm.git] / lib / Target / ARM / ARMMachineFunctionInfo.h

diff --git a/lib/Target/ARM/ARMMachineFunctionInfo.h b/lib/Target/ARM/ARMMachineFunctionInfo.h
index 96be29fa4f27c28f2a18ad84499d12ee7f9d4cb5..88d96c0be8a7509bbb5ee46084502e4a71b70fcf 100644 (file)
--- a/lib/Target/ARM/ARMMachineFunctionInfo.h
+++ b/lib/Target/ARM/ARMMachineFunctionInfo.h
@@ -1,4 +1,4 @@
-//====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
+//===-- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -15,10 +15,10 @@
 #define ARMMACHINEFUNCTIONINFO_H
 
 #include "ARMSubtarget.h"
+#include "llvm/ADT/BitVector.h"
 #include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/ADT/BitVector.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 
 namespace llvm {
 
@@ -64,6 +64,9 @@ class ARMFunctionInfo : public MachineFunctionInfo {
   /// GPR callee-saved (2) : r8, r10, r11
   /// --------------------------------------------
   /// DPR callee-saved : d8 - d15
+  ///
+  /// Also see AlignedDPRCSRegs below. Not all D-regs need to go in area 3.
+  /// Some may be spilled after the stack has been realigned.
   unsigned GPRCS1Offset;
   unsigned GPRCS2Offset;
   unsigned DPRCSOffset;
@@ -80,6 +83,15 @@ class ARMFunctionInfo : public MachineFunctionInfo {
   BitVector GPRCS2Frames;
   BitVector DPRCSFrames;
 
+  /// NumAlignedDPRCS2Regs - The number of callee-saved DPRs that are saved in
+  /// the aligned portion of the stack frame.  This is always a contiguous
+  /// sequence of D-registers starting from d8.
+  ///
+  /// We do not keep track of the frame indices used for these registers - they
+  /// behave like any other frame index in the aligned stack frame.  These
+  /// registers also aren't included in DPRCSSize above.
+  unsigned NumAlignedDPRCS2Regs;
+
   /// JumpTableUId - Unique id for jumptables.
   ///
   unsigned JumpTableUId;
@@ -96,6 +108,11 @@ class ARMFunctionInfo : public MachineFunctionInfo {
   /// pass.
   DenseMap<unsigned, unsigned> CPEClones;
 
+  /// GlobalBaseReg - keeps track of the virtual register initialized for
+  /// use as the global base register. This is used for PIC in some PIC
+  /// relocation models.
+  unsigned GlobalBaseReg;
+
 public:
   ARMFunctionInfo() :
     isThumb(false),
@@ -105,8 +122,9 @@ public:
     FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
     GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
     GPRCS1Frames(0), GPRCS2Frames(0), DPRCSFrames(0),
+    NumAlignedDPRCS2Regs(0),
     JumpTableUId(0), PICLabelUId(0),
-    VarArgsFrameIndex(0), HasITBlocks(false) {}
+    VarArgsFrameIndex(0), HasITBlocks(false), GlobalBaseReg(0) {}
 
   explicit ARMFunctionInfo(MachineFunction &MF) :
     isThumb(MF.getTarget().getSubtarget<ARMSubtarget>().isThumb()),
@@ -117,7 +135,7 @@ public:
     GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
     GPRCS1Frames(32), GPRCS2Frames(32), DPRCSFrames(32),
     JumpTableUId(0), PICLabelUId(0),
-    VarArgsFrameIndex(0), HasITBlocks(false) {}
+    VarArgsFrameIndex(0), HasITBlocks(false), GlobalBaseReg(0) {}
 
   bool isThumbFunction() const { return isThumb; }
   bool isThumb1OnlyFunction() const { return isThumb && !hasThumb2; }
@@ -138,6 +156,9 @@ public:
   unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; }
   void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; }
 
+  unsigned getNumAlignedDPRCS2Regs() const { return NumAlignedDPRCS2Regs; }
+  void setNumAlignedDPRCS2Regs(unsigned n) { NumAlignedDPRCS2Regs = n; }
+
   unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; }
   unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; }
   unsigned getDPRCalleeSavedAreaOffset()  const { return DPRCSOffset; }
@@ -233,6 +254,9 @@ public:
   bool hasITBlocks() const { return HasITBlocks; }
   void setHasITBlocks(bool h) { HasITBlocks = h; }
 
+  unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
+  void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
+
   void recordCPEClone(unsigned CPIdx, unsigned CPCloneIdx) {
     if (!CPEClones.insert(std::make_pair(CPCloneIdx, CPIdx)).second)
       assert(0 && "Duplicate entries!");