================
@@ -4947,7 +4948,23 @@ void CodeGenFunction::EmitCallArg(CallArgList &args,
const Expr *E,
return;
}
- args.add(EmitAnyExprToTemp(E), type);
+ AggValueSlot ArgSlot = AggValueSlot::ignored();
+ // If the callee returns a reference, skip this stack saving optimization;
----------------
efriedma-quic wrote:
I don't understand what "If the callee returns a reference" means, in this
context.
The only way the address of the temporary created here could be user-visible is
if we use it as the parameter address in the callee.
https://github.com/llvm/llvm-project/pull/170517
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