[PATCH] D91157: [AArch64] Out-of-line atomics (-moutline-atomics) implementation.

[Pavel Iliin via Phabricator via cfe-commits]

ilinpv added a comment.

Have you got any further comments?



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Comment at: llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:2170
+  SmallVector<SDValue, 4> Ops;
+  if (TLI.getLibcallName(LC)) {
+    Ops.append(Node->op_begin() + 2, Node->op_end());
----------------
t.p.northover wrote:
> jyknight wrote:
> > t.p.northover wrote:
> > > I think this is a bit of an abuse of the `LibcallName` mechanism. A separate function in `TargetLowering` would probably be better.
> > I don't think that's odd or unusual -- we often condition libcall availability on getLibcallName != nullptr.
> > 
> > What does strike me here is the (pre-existing) code duplication between this function (DAGTypeLegalizer::ExapndAtomic) and SelectionDAGLegalize::ConvertNodeToLibcall. Not sure what's up with that...
> Fair enough. Didn't realise it was that common.
I noticed this existed duplication too, but find no proper place to put common functionality from DAGTypeLegalizer and  SelectionDAGLegalize.


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  https://reviews.llvm.org/D91157/new/

https://reviews.llvm.org/D91157