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Keep track of incoming argument's location while emitting LiveIns.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124611 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-01-31 21:38:14 +00:00
parent 97f6d5b241
commit e9a7ea6865
13 changed files with 144 additions and 32 deletions
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9
lib/CodeGen/MachineRegisterInfo.cpp
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@@ -210,8 +210,15 @@ MachineRegisterInfo::EmitLiveInCopies(MachineBasicBlock *EntryMBB,
LiveIns.erase(LiveIns.begin() + i);
--i; --e;
} else {
DebugLoc DL;
// If there is a location for this live in then use it.
DenseMap<unsigned, DebugLoc>::iterator DLI =
LiveInLocs.find(LiveIns[i].second);
if (DLI != LiveInLocs.end())
DL = DLI->second;
// Emit a copy.
BuildMI(*EntryMBB, EntryMBB->begin(), DebugLoc(),
BuildMI(*EntryMBB, EntryMBB->begin(), DL,
TII.get(TargetOpcode::COPY), LiveIns[i].second)
.addReg(LiveIns[i].first);