[COFF, ARM64] Add _InterlockedAdd intrinsic
Reviewers: rnk, mstorsjo, compnerd, TomTan, haripul, javed.absar, efriedma
Reviewed By: efriedma
Subscribers: efriedma, kristof.beyls, chrib, jfb, cfe-commits
Differential Revision: https://reviews.llvm.org/D52811
llvm-svn: 343894
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 8e23b22..18b300b 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -8517,6 +8517,15 @@
return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedDecrement, E);
case AArch64::BI_InterlockedIncrement64:
return EmitMSVCBuiltinExpr(MSVCIntrin::_InterlockedIncrement, E);
+
+ case AArch64::BI_InterlockedAdd: {
+ Value *Arg0 = EmitScalarExpr(E->getArg(0));
+ Value *Arg1 = EmitScalarExpr(E->getArg(1));
+ AtomicRMWInst *RMWI = Builder.CreateAtomicRMW(
+ AtomicRMWInst::Add, Arg0, Arg1,
+ llvm::AtomicOrdering::SequentiallyConsistent);
+ return Builder.CreateAdd(RMWI, Arg1);
+ }
}
}