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When emitting a label for a PostCall safe point, the machine

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instruction to insert before can be end(). getDebugLoc on
end() returns an invalid value, therefore use the debug
loc of the call instruction, and give it to InsertLabel.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81207 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nicolas Geoffray
2009-09-08 07:39:27 +00:00
parent de782a2321
commit 22f35ace45
1 changed files with 11 additions and 6 deletions
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17
lib/CodeGen/GCStrategy.cpp
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@@ -72,7 +72,8 @@ namespace {
void FindSafePoints(MachineFunction &MF);
void VisitCallPoint(MachineBasicBlock::iterator MI);
unsigned InsertLabel(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const;
MachineBasicBlock::iterator MI,
DebugLoc DL) const;
void FindStackOffsets(MachineFunction &MF);
@@ -329,11 +330,13 @@ void MachineCodeAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
}
unsigned MachineCodeAnalysis::InsertLabel(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const {
MachineBasicBlock::iterator MI,
DebugLoc DL) const {
unsigned Label = MMI->NextLabelID();
// N.B. we assume that MI is *not* equal to the "end()" iterator.
BuildMI(MBB, MI, MI->getDebugLoc(),
BuildMI(MBB, MI, DL,
TII->get(TargetInstrInfo::GC_LABEL)).addImm(Label);
return Label;
}
@@ -344,10 +347,12 @@ void MachineCodeAnalysis::VisitCallPoint(MachineBasicBlock::iterator CI) {
++RAI;
if (FI->getStrategy().needsSafePoint(GC::PreCall))
FI->addSafePoint(GC::PreCall, InsertLabel(*CI->getParent(), CI));
FI->addSafePoint(GC::PreCall, InsertLabel(*CI->getParent(), CI,
CI->getDebugLoc()));
if (FI->getStrategy().needsSafePoint(GC::PostCall))
FI->addSafePoint(GC::PostCall, InsertLabel(*CI->getParent(), RAI));
FI->addSafePoint(GC::PostCall, InsertLabel(*CI->getParent(), RAI,
CI->getDebugLoc()));
}
void MachineCodeAnalysis::FindSafePoints(MachineFunction &MF) {