diff options
| -rw-r--r-- | llvm/lib/CodeGen/MachineOutliner.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineOutliner.cpp b/llvm/lib/CodeGen/MachineOutliner.cpp index cc95c49022a..d1343cbc54c 100644 --- a/llvm/lib/CodeGen/MachineOutliner.cpp +++ b/llvm/lib/CodeGen/MachineOutliner.cpp @@ -625,27 +625,38 @@ struct InstructionMapper { const TargetInstrInfo &TII) { unsigned Flags = TII.getMachineOutlinerMBBFlags(MBB); + // Set to true whenever we map an illegal number. + bool AddedIllegalLastTime = false; for (MachineBasicBlock::iterator It = MBB.begin(), Et = MBB.end(); It != Et; It++) { // Keep track of where this instruction is in the module. switch (TII.getOutliningType(It, Flags)) { case InstrType::Illegal: + // If we added an illegal number last time, then don't add more of them. + // One number is all that is necessary to prevent matches on illegal + // instructions. + if (AddedIllegalLastTime) + break; + AddedIllegalLastTime = true; mapToIllegalUnsigned(It); break; case InstrType::Legal: + AddedIllegalLastTime = false; mapToLegalUnsigned(It); break; case InstrType::LegalTerminator: mapToLegalUnsigned(It); InstrList.push_back(It); + AddedIllegalLastTime = true; UnsignedVec.push_back(IllegalInstrNumber); IllegalInstrNumber--; break; case InstrType::Invisible: + AddedIllegalLastTime = false; break; } } |
