[clang] [CIR] Call to variadic functions (PR #141942)

[Sirui Mu via cfe-commits]

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@@ -39,6 +39,26 @@ class RequiredArgs {
 
   bool allowsOptionalArgs() const { return numRequired != ~0U; }
 
+  /// Compute the arguments required by the given formal prototype, given that
+  /// there may be some additional, non-formal arguments in play.
+  ///
+  /// If FD is not null, this will consider pass_object_size params in FD.
+  static RequiredArgs
+  forPrototypePlus(const clang::FunctionProtoType *prototype,
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Lancern wrote:

Updated.

https://github.com/llvm/llvm-project/pull/141942