diff options
Diffstat (limited to 'lib/CodeGen/ProcessImplicitDefs.cpp')
| -rw-r--r-- | lib/CodeGen/ProcessImplicitDefs.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp index a484bec..c9a33d8 100644 --- a/lib/CodeGen/ProcessImplicitDefs.cpp +++ b/lib/CodeGen/ProcessImplicitDefs.cpp @@ -183,19 +183,23 @@ bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &fn) { // is not an implicit_def, do not insert implicit_def's before the // uses. bool Skip = false; + SmallVector<MachineInstr*, 4> DeadImpDefs; for (MachineRegisterInfo::def_iterator DI = mri_->def_begin(Reg), DE = mri_->def_end(); DI != DE; ++DI) { - if (DI->getOpcode() != TargetInstrInfo::IMPLICIT_DEF) { + MachineInstr *DeadImpDef = &*DI; + if (DeadImpDef->getOpcode() != TargetInstrInfo::IMPLICIT_DEF) { Skip = true; break; } + DeadImpDefs.push_back(DeadImpDef); } if (Skip) continue; // The only implicit_def which we want to keep are those that are live // out of its block. - MI->eraseFromParent(); + for (unsigned j = 0, ee = DeadImpDefs.size(); j != ee; ++j) + DeadImpDefs[j]->eraseFromParent(); Changed = true; // Process each use instruction once. |