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implement __sync_synchronize and __sync_lock_release, 

rdar://6880573

llvm-svn: 71637
This commit is contained in:
Chris Lattner 2009-05-13 04:46:13 +00:00
parent 94578cba76
commit afde259240
2 changed files with 21 additions and 3 deletions
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18
clang/lib/CodeGen/CGBuiltin.cpp
View File

@ -470,11 +470,23 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
case Builtin::BI__sync_lock_release_2:
case Builtin::BI__sync_lock_release_4:
case Builtin::BI__sync_lock_release_8:
case Builtin::BI__sync_lock_release_16:
assert(0 && "FIXME: Implement");
case Builtin::BI__sync_lock_release_16: {
Value *Ptr = EmitScalarExpr(E->getArg(0));
const llvm::Type *ElTy =
cast<llvm::PointerType>(Ptr->getType())->getElementType();
Builder.CreateStore(llvm::Constant::getNullValue(ElTy), Ptr, true);
return RValue();
}
case Builtin::BI__sync_synchronize: {
Value *C[5];
C[0] = C[1] = C[2] = C[3] = llvm::ConstantInt::get(llvm::Type::Int1Ty, 1);
C[4] = ConstantInt::get(llvm::Type::Int1Ty, 0);
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::memory_barrier), C, C + 5);
return RValue();
}
// Library functions with special handling.
case Builtin::BIsqrt:
case Builtin::BIsqrtf:
case Builtin::BIsqrtl: {

6
clang/test/CodeGen/atomic.c
View File

@ -33,15 +33,21 @@ int atomic(void)
old = __sync_fetch_and_and(&val, 0x9);
old = __sync_fetch_and_or(&val, 0xa);
old = __sync_fetch_and_xor(&val, 0xb);
old = __sync_fetch_and_nand(&val, 0xb);
old = __sync_add_and_fetch(&val, 1);
old = __sync_sub_and_fetch(&val, 2);
old = __sync_and_and_fetch(&valc, 3);
old = __sync_or_and_fetch(&valc, 4);
old = __sync_xor_and_fetch(&valc, 5);
old = __sync_nand_and_fetch(&valc, 5);
__sync_val_compare_and_swap((void **)0, (void *)0, (void *)0);
__sync_lock_release(&val);
__sync_synchronize ();
return old;
}