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- Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue.

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- Teach spiller to modify DBG_VALUE instructions to reference spill slots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-04-26 07:38:55 +00:00
parent f822e733af
commit 962021bc7f
10 changed files with 69 additions and 47 deletions
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20
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -1296,9 +1296,23 @@ rewriteInstructionsForSpills(const LiveInterval &li, bool TrySplit,
MachineOperand &O = ri.getOperand();
++ri;
if (MI->isDebugValue()) {
// Remove debug info for now.
O.setReg(0U);
DEBUG(dbgs() << "Removing debug info due to spill:" << "\t" << *MI);
// Modify DBG_VALUE now that the value is in a spill slot.
uint64_t Offset = MI->getOperand(1).getImm();
const MDNode *MDPtr = MI->getOperand(2).getMetadata();
DebugLoc DL = MI->getDebugLoc();
MachineInstr *NewDV = tii_->emitFrameIndexDebugValue(*mf_, Slot, Offset,
MDPtr, DL);
if (NewDV) {
DEBUG(dbgs() << "Modifying debug info due to spill:" << "\t" << *MI);
ReplaceMachineInstrInMaps(MI, NewDV);
MachineBasicBlock *MBB = MI->getParent();
MBB->insert(MBB->erase(MI), NewDV);
} else {
DEBUG(dbgs() << "Removing debug info due to spill:" << "\t" << *MI);
RemoveMachineInstrFromMaps(MI);
vrm.RemoveMachineInstrFromMaps(MI);
MI->eraseFromParent();
}
continue;
}
assert(!O.isImplicit() && "Spilling register that's used as implicit use?");