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Account for early-clobber reload instructions.

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No test case, there are no in-tree targets that require this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160219 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-07-14 18:45:35 +00:00
parent c8981f2e3d
commit 27982e1108
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/InlineSpiller.cpp
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@ -1081,6 +1081,10 @@ void InlineSpiller::insertReload(LiveInterval &NewLI,
MRI.getRegClass(NewLI.reg), &TRI); MRI.getRegClass(NewLI.reg), &TRI);
--MI; // Point to load instruction. --MI; // Point to load instruction.
SlotIndex LoadIdx = LIS.InsertMachineInstrInMaps(MI).getRegSlot(); SlotIndex LoadIdx = LIS.InsertMachineInstrInMaps(MI).getRegSlot();
// Some (out-of-tree) targets have EC reload instructions.
if (MachineOperand *MO = MI->findRegisterDefOperand(NewLI.reg))
if (MO->isEarlyClobber())
LoadIdx = LoadIdx.getRegSlot(true);
DEBUG(dbgs() << "\treload: " << LoadIdx << '\t' << *MI); DEBUG(dbgs() << "\treload: " << LoadIdx << '\t' << *MI);
VNInfo *LoadVNI = NewLI.getNextValue(LoadIdx, LIS.getVNInfoAllocator()); VNInfo *LoadVNI = NewLI.getNextValue(LoadIdx, LIS.getVNInfoAllocator());
NewLI.addRange(LiveRange(LoadIdx, Idx, LoadVNI)); NewLI.addRange(LiveRange(LoadIdx, Idx, LoadVNI));