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Fix a bug which occurred with empty basic blocks 

llvm-svn: 5982
This commit is contained in:
Chris Lattner 2003-05-02 18:44:42 +00:00
parent e22031edfe
commit f22d1f5912
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/CodeGen/PrologEpilogInserter.cpp
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@ -160,7 +160,7 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
const TargetInstrInfo &TII = Fn.getTarget().getInstrInfo(); const TargetInstrInfo &TII = Fn.getTarget().getInstrInfo();
for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI) { for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI) {
// If last instruction is a return instruction, add an epilogue // If last instruction is a return instruction, add an epilogue
if (TII.isReturn(FI->back()->getOpcode())) { if (!FI->empty() && TII.isReturn(FI->back()->getOpcode())) {
MBB = FI; I = MBB->end()-1; MBB = FI; I = MBB->end()-1;
for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) { for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) {