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-rw-r--r--lib/AsmParser/LLParser.cpp13
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index a528a7e7a5..0c188f983f 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -4256,8 +4256,8 @@ int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
}
/// ParseCmpXchg
-/// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
-/// 'singlethread'? AtomicOrdering AtomicOrdering
+/// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
+/// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
bool AteExtraComma = false;
@@ -4265,6 +4265,10 @@ int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
AtomicOrdering FailureOrdering = NotAtomic;
SynchronizationScope Scope = CrossThread;
bool isVolatile = false;
+ bool isWeak = false;
+
+ if (EatIfPresent(lltok::kw_weak))
+ isWeak = true;
if (EatIfPresent(lltok::kw_volatile))
isVolatile = true;
@@ -4297,9 +4301,10 @@ int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
" integer");
- AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(Ptr, Cmp, New, SuccessOrdering,
- FailureOrdering, Scope);
+ AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
+ Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
CXI->setVolatile(isVolatile);
+ CXI->setWeak(isWeak);
Inst = CXI;
return AteExtraComma ? InstExtraComma : InstNormal;
}