================
@@ -5448,6 +5472,45 @@ static unsigned getMaxVectorWidth(const llvm::Type *Ty) {
return MaxVectorWidth;
}
+/// Returns the incoming llvm::Argument of the current function if this
+/// musttail call argument forwards an incoming Indirect parameter with a
+/// matching ABI shape; nullptr to fall through to the byval-temp path.
+/// Argument-side analog of a96c14eeb8fc (SRet musttail forwarding).
----------------
efriedma-quic wrote:
This is not really how I'd expect this to work... you've optimized a special
case, but haven't fixed the general case. In general, you need to emit a copy
from some local alloca into the argument pointer.
https://github.com/llvm/llvm-project/pull/199351
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