================
@@ -4689,6 +4720,31 @@ void CodeGenFunction::EmitCallArg(CallArgList &args,
const Expr *E,
assert(type->isReferenceType() == E->isGLValue() &&
"reference binding to unmaterialized r-value!");
+ // Add writeback for HLSLOutParamExpr.
+ if (const HLSLOutArgExpr *OE = dyn_cast<HLSLOutArgExpr>(E)) {
----------------
rjmccall wrote:
Please pull the body of this out into a helper function.
https://github.com/llvm/llvm-project/pull/101083
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