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Added atomic cmpxchg.

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This commit is contained in:
Siu Kwan Lam 2012-08-02 17:54:40 -07:00
commit acad5c9d8b
6 changed files with 127 additions and 0 deletions
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39
llvm/extra.cpp
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@ -111,6 +111,45 @@ char *do_print(W obj)
return strdup(buf.str().c_str());
}
LLVMValueRef LLVMBuildAtomicCmpXchg(LLVMBuilderRef builder, LLVMValueRef ptr,
LLVMValueRef cmp, LLVMValueRef val,
const char* ordering, int crossthread)
{
using namespace llvm;
AtomicOrdering ordering_enum;
if ( strcmp(ordering, "unordered") == 0 )
ordering_enum = Unordered;
else if ( strcmp(ordering, "monotonic") == 0 )
ordering_enum = Monotonic;
else if ( strcmp(ordering, "acquire") == 0 )
ordering_enum = Acquire;
else if ( strcmp(ordering, "release") == 0 )
ordering_enum = Release;
else if ( strcmp(ordering, "acq_rel") == 0 )
ordering_enum = AcquireRelease;
else if ( strcmp(ordering, "seq_cst") == 0 )
ordering_enum = SequentiallyConsistent;
else
ordering_enum = NotAtomic;
SynchronizationScope crossthread_enum;
switch( crossthread ){
case 0:
crossthread_enum = SingleThread;
break;
default:
crossthread_enum = CrossThread;
}
Value * inst = unwrap(builder)->CreateAtomicCmpXchg(
unwrap(ptr), unwrap(cmp), unwrap(val),
ordering_enum, crossthread_enum);
return wrap(inst);
}
LLVMEngineBuilderRef LLVMCreateEngineBuilder(LLVMModuleRef mod)
{
using namespace llvm;