//====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file declares ARM-specific per-machine-function information.
#include "ARMSubtarget.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/ADT/BitVector.h"
namespace llvm {
-/// ARMFunctionInfo - This class is derived from MachineFunction private
-/// ARM target-specific information for each MachineFunction.
+/// ARMFunctionInfo - This class is derived from MachineFunctionInfo and
+/// contains private ARM-specific information for each MachineFunction.
class ARMFunctionInfo : public MachineFunctionInfo {
/// isThumb - True if this function is compiled under Thumb mode.
/// Used to initialized Align, so must precede it.
bool isThumb;
- /// Align - required alignment. ARM functions and Thumb functions with
- /// constant pools require 4-byte alignment; other Thumb functions
- /// require only 2-byte alignment.
- unsigned Align;
+ /// hasThumb2 - True if the target architecture supports Thumb2. Do not use
+ /// to determine if function is compiled under Thumb mode, for that use
+ /// 'isThumb'.
+ bool hasThumb2;
/// VarArgsRegSaveSize - Size of the register save area for vararg functions.
///
/// processFunctionBeforeCalleeSavedScan().
bool HasStackFrame;
+ /// RestoreSPFromFP - True if epilogue should restore SP from FP. Set by
+ /// emitPrologue.
+ bool RestoreSPFromFP;
+
/// LRSpilledForFarJump - True if the LR register has been for spilled to
/// enable far jump.
bool LRSpilledForFarJump;
- /// R3IsLiveIn - True if R3 is live in to this function.
- /// FIXME: Remove when register scavenger for Thumb is done.
- bool R3IsLiveIn;
-
/// FramePtrSpillOffset - If HasStackFrame, this records the frame pointer
/// spill stack offset.
unsigned FramePtrSpillOffset;
BitVector GPRCS2Frames;
BitVector DPRCSFrames;
- /// SpilledCSRegs - A BitVector mask of all spilled callee-saved registers.
- ///
- BitVector SpilledCSRegs;
-
/// JumpTableUId - Unique id for jumptables.
///
unsigned JumpTableUId;
+ unsigned PICLabelUId;
+
+ /// VarArgsFrameIndex - FrameIndex for start of varargs area.
+ int VarArgsFrameIndex;
+
+ /// HasITBlocks - True if IT blocks have been inserted.
+ bool HasITBlocks;
+
+ /// CPEClones - Track constant pool entries clones created by Constant Island
+ /// pass.
+ DenseMap<unsigned, unsigned> CPEClones;
+
public:
ARMFunctionInfo() :
- isThumb(false),
- Align(2U),
- VarArgsRegSaveSize(0), HasStackFrame(false),
- LRSpilledForFarJump(false), R3IsLiveIn(false),
+ isThumb(false),
+ hasThumb2(false),
+ VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false),
+ LRSpilledForFarJump(false),
FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
GPRCS1Frames(0), GPRCS2Frames(0), DPRCSFrames(0),
- JumpTableUId(0) {}
+ JumpTableUId(0), PICLabelUId(0),
+ VarArgsFrameIndex(0), HasITBlocks(false) {}
- ARMFunctionInfo(MachineFunction &MF) :
+ explicit ARMFunctionInfo(MachineFunction &MF) :
isThumb(MF.getTarget().getSubtarget<ARMSubtarget>().isThumb()),
- Align(isThumb ? 1U : 2U),
- VarArgsRegSaveSize(0), HasStackFrame(false),
- LRSpilledForFarJump(false), R3IsLiveIn(false),
+ hasThumb2(MF.getTarget().getSubtarget<ARMSubtarget>().hasThumb2()),
+ VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false),
+ LRSpilledForFarJump(false),
FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
GPRCS1Frames(32), GPRCS2Frames(32), DPRCSFrames(32),
- SpilledCSRegs(MF.getTarget().getRegisterInfo()->getNumRegs()),
- JumpTableUId(0) {}
+ JumpTableUId(0), PICLabelUId(0),
+ VarArgsFrameIndex(0), HasITBlocks(false) {}
bool isThumbFunction() const { return isThumb; }
-
- unsigned getAlign() const { return Align; }
- void setAlign(unsigned a) { Align = a; }
+ bool isThumb1OnlyFunction() const { return isThumb && !hasThumb2; }
+ bool isThumb2Function() const { return isThumb && hasThumb2; }
unsigned getVarArgsRegSaveSize() const { return VarArgsRegSaveSize; }
void setVarArgsRegSaveSize(unsigned s) { VarArgsRegSaveSize = s; }
bool hasStackFrame() const { return HasStackFrame; }
void setHasStackFrame(bool s) { HasStackFrame = s; }
+ bool shouldRestoreSPFromFP() const { return RestoreSPFromFP; }
+ void setShouldRestoreSPFromFP(bool s) { RestoreSPFromFP = s; }
+
bool isLRSpilledForFarJump() const { return LRSpilledForFarJump; }
void setLRIsSpilledForFarJump(bool s) { LRSpilledForFarJump = s; }
- // FIXME: Remove when register scavenger for Thumb is done.
- bool isR3LiveIn() const { return R3IsLiveIn; }
- void setR3IsLiveIn(bool l) { R3IsLiveIn = l; }
-
unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; }
void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; }
-
+
unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; }
unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; }
unsigned getDPRCalleeSavedAreaOffset() const { return DPRCSOffset; }
}
}
- void setCSRegisterIsSpilled(unsigned Reg) {
- SpilledCSRegs.set(Reg);
+ unsigned createJumpTableUId() {
+ return JumpTableUId++;
}
- bool isCSRegisterSpilled(unsigned Reg) {
- return SpilledCSRegs[Reg];
+ unsigned getNumJumpTables() const {
+ return JumpTableUId;
}
- const BitVector &getSpilledCSRegisters() const {
- return SpilledCSRegs;
+ void initPICLabelUId(unsigned UId) {
+ PICLabelUId = UId;
}
- unsigned createJumpTableUId() {
- return JumpTableUId++;
+ unsigned getNumPICLabels() const {
+ return PICLabelUId;
+ }
+
+ unsigned createPICLabelUId() {
+ return PICLabelUId++;
+ }
+
+ int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
+ void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
+
+ bool hasITBlocks() const { return HasITBlocks; }
+ void setHasITBlocks(bool h) { HasITBlocks = h; }
+
+ void recordCPEClone(unsigned CPIdx, unsigned CPCloneIdx) {
+ if (!CPEClones.insert(std::make_pair(CPCloneIdx, CPIdx)).second)
+ assert(0 && "Duplicate entries!");
+ }
+
+ unsigned getOriginalCPIdx(unsigned CloneIdx) const {
+ DenseMap<unsigned, unsigned>::const_iterator I = CPEClones.find(CloneIdx);
+ if (I != CPEClones.end())
+ return I->second;
+ else
+ return -1U;
}
};
} // End llvm namespace
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