diff options
Diffstat (limited to 'lib/Bitcode/Reader/BitcodeReader.cpp')
| -rw-r--r-- | lib/Bitcode/Reader/BitcodeReader.cpp | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index 5e358d9cc5..eb716660eb 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -2882,7 +2882,8 @@ error_code BitcodeReader::ParseFunctionBody(Function *F) { break; } case bitc::FUNC_CODE_INST_CMPXCHG: { - // CMPXCHG:[ptrty, ptr, cmp, new, vol, ordering, synchscope] + // CMPXCHG:[ptrty, ptr, cmp, new, vol, successordering, synchscope, + // failureordering] unsigned OpNum = 0; Value *Ptr, *Cmp, *New; if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) || @@ -2890,13 +2891,22 @@ error_code BitcodeReader::ParseFunctionBody(Function *F) { cast<PointerType>(Ptr->getType())->getElementType(), Cmp) || popValue(Record, OpNum, NextValueNo, cast<PointerType>(Ptr->getType())->getElementType(), New) || - OpNum+3 != Record.size()) + (OpNum + 3 != Record.size() && OpNum + 4 != Record.size())) return Error(InvalidRecord); - AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+1]); - if (Ordering == NotAtomic || Ordering == Unordered) + AtomicOrdering SuccessOrdering = GetDecodedOrdering(Record[OpNum+1]); + if (SuccessOrdering == NotAtomic || SuccessOrdering == Unordered) return Error(InvalidRecord); SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+2]); - I = new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, SynchScope); + + AtomicOrdering FailureOrdering; + if (Record.size() < 7) + FailureOrdering = + AtomicCmpXchgInst::getStrongestFailureOrdering(SuccessOrdering); + else + FailureOrdering = GetDecodedOrdering(Record[OpNum+3]); + + I = new AtomicCmpXchgInst(Ptr, Cmp, New, SuccessOrdering, FailureOrdering, + SynchScope); cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]); InstructionList.push_back(I); break; |