#include "ARMAddressingModes.h"
#include "ARMBaseInstrInfo.h"
#include "ARMBaseRegisterInfo.h"
+#include "ARMFrameInfo.h"
#include "ARMInstrInfo.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMSubtarget.h"
return ARM::SP;
}
-// Provide a base+offset reference to an FI slot for debug info. It's the
-// same as what we use for resolving the code-gen references for now.
-// FIXME: This can go wrong when references are SP-relative and simple call
-// frames aren't used.
-int
-ARMBaseRegisterInfo::getFrameIndexReference(const MachineFunction &MF, int FI,
- unsigned &FrameReg) const {
- return ResolveFrameIndexReference(MF, FI, FrameReg, 0);
-}
-
-int
-ARMBaseRegisterInfo::ResolveFrameIndexReference(const MachineFunction &MF,
- int FI,
- unsigned &FrameReg,
- int SPAdj) const {
- const MachineFrameInfo *MFI = MF.getFrameInfo();
- const TargetFrameInfo *TFI = MF.getTarget().getFrameInfo();
- const ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
- int Offset = MFI->getObjectOffset(FI) + MFI->getStackSize();
- int FPOffset = Offset - AFI->getFramePtrSpillOffset();
- bool isFixed = MFI->isFixedObjectIndex(FI);
-
- FrameReg = ARM::SP;
- Offset += SPAdj;
- if (AFI->isGPRCalleeSavedArea1Frame(FI))
- return Offset - AFI->getGPRCalleeSavedArea1Offset();
- else if (AFI->isGPRCalleeSavedArea2Frame(FI))
- return Offset - AFI->getGPRCalleeSavedArea2Offset();
- else if (AFI->isDPRCalleeSavedAreaFrame(FI))
- return Offset - AFI->getDPRCalleeSavedAreaOffset();
-
- // When dynamically realigning the stack, use the frame pointer for
- // parameters, and the stack/base pointer for locals.
- if (needsStackRealignment(MF)) {
- assert (TFI->hasFP(MF) && "dynamic stack realignment without a FP!");
- if (isFixed) {
- FrameReg = getFrameRegister(MF);
- Offset = FPOffset;
- } else if (MFI->hasVarSizedObjects()) {
- assert(hasBasePointer(MF) &&
- "VLAs and dynamic stack alignment, but missing base pointer!");
- FrameReg = BasePtr;
- }
- return Offset;
- }
-
- // If there is a frame pointer, use it when we can.
- if (TFI->hasFP(MF) && AFI->hasStackFrame()) {
- // Use frame pointer to reference fixed objects. Use it for locals if
- // there are VLAs (and thus the SP isn't reliable as a base).
- if (isFixed || (MFI->hasVarSizedObjects() && !hasBasePointer(MF))) {
- FrameReg = getFrameRegister(MF);
- return FPOffset;
- } else if (MFI->hasVarSizedObjects()) {
- assert(hasBasePointer(MF) && "missing base pointer!");
- // Try to use the frame pointer if we can, else use the base pointer
- // since it's available. This is handy for the emergency spill slot, in
- // particular.
- if (AFI->isThumb2Function()) {
- if (FPOffset >= -255 && FPOffset < 0) {
- FrameReg = getFrameRegister(MF);
- return FPOffset;
- }
- } else
- FrameReg = BasePtr;
- } else if (AFI->isThumb2Function()) {
- // In Thumb2 mode, the negative offset is very limited. Try to avoid
- // out of range references.
- if (FPOffset >= -255 && FPOffset < 0) {
- FrameReg = getFrameRegister(MF);
- return FPOffset;
- }
- } else if (Offset > (FPOffset < 0 ? -FPOffset : FPOffset)) {
- // Otherwise, use SP or FP, whichever is closer to the stack slot.
- FrameReg = getFrameRegister(MF);
- return FPOffset;
- }
- }
- // Use the base pointer if we have one.
- if (hasBasePointer(MF))
- FrameReg = BasePtr;
- return Offset;
-}
-
-int
-ARMBaseRegisterInfo::getFrameIndexOffset(const MachineFunction &MF,
- int FI) const {
- unsigned FrameReg;
- return getFrameIndexReference(MF, FI, FrameReg);
-}
-
unsigned ARMBaseRegisterInfo::getEHExceptionRegister() const {
llvm_unreachable("What is the exception register");
return 0;
MachineInstr &MI = *II;
MachineBasicBlock &MBB = *MI.getParent();
MachineFunction &MF = *MBB.getParent();
+ const ARMFrameInfo *TFI =
+ static_cast<const ARMFrameInfo*>(MF.getTarget().getFrameInfo());
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
assert(!AFI->isThumb1OnlyFunction() &&
"This eliminateFrameIndex does not support Thumb1!");
int FrameIndex = MI.getOperand(i).getIndex();
unsigned FrameReg;
- int Offset = ResolveFrameIndexReference(MF, FrameIndex, FrameReg, SPAdj);
+ int Offset = TFI->ResolveFrameIndexReference(MF, FrameIndex, FrameReg, SPAdj);
// Special handling of dbg_value instructions.
if (MI.isDebugValue()) {