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Add ARM specific emitFrameIndexDebugValue.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102324 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-04-26 07:39:25 +00:00
parent 962021bc7f
commit 62b50656ce
3 changed files with 23 additions and 0 deletions
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10
lib/Target/ARM/ARMBaseInstrInfo.cpp
View File

@ -816,6 +816,16 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
}
}
MachineInstr*
ARMBaseInstrInfo::emitFrameIndexDebugValue(MachineFunction &MF,
unsigned FrameIx, uint64_t Offset,
const MDNode *MDPtr,
DebugLoc DL) const {
MachineInstrBuilder MIB = BuildMI(MF, DL, get(ARM::DBG_VALUE))
.addFrameIndex(FrameIx).addImm(0).addImm(Offset).addMetadata(MDPtr);
return &*MIB;
}
MachineInstr *ARMBaseInstrInfo::
foldMemoryOperandImpl(MachineFunction &MF, MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops, int FI) const {

6
lib/Target/ARM/ARMBaseInstrInfo.h
View File

@ -269,6 +269,12 @@ public:
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC) const;
virtual MachineInstr *emitFrameIndexDebugValue(MachineFunction &MF,
unsigned FrameIx,
uint64_t Offset,
const MDNode *MDPtr,
DebugLoc DL) const;
virtual bool canFoldMemoryOperand(const MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops) const;

7
lib/Target/ARM/ARMBaseRegisterInfo.cpp
View File

@ -1183,6 +1183,13 @@ ARMBaseRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
SPAdj = 0;
Offset += SPAdj;
// Special handling of dbg_value instructions.
if (MI.isDebugValue()) {
MI.getOperand(i). ChangeToRegister(FrameReg, false /*isDef*/);
MI.getOperand(i+1).ChangeToImmediate(Offset);
return 0;
}
// Modify MI as necessary to handle as much of 'Offset' as possible
bool Done = false;
if (!AFI->isThumbFunction())