[clang] [CIR] Add pass_object_size hidden parameter support (PR #191482)

[via cfe-commits]

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@@ -174,6 +174,11 @@ class CIRGenFunction : public CIRGenTypeCache {
   ImplicitParamDecl *cxxStructorImplicitParamDecl{};
   mlir::Value cxxStructorImplicitParamValue{};
 
+  /// If a ParmVarDecl had the pass_object_size attribute, this will contain a
+  /// mapping from said ParmVarDecl to its implicit "object_size" parameter.
+  llvm::SmallDenseMap<const ParmVarDecl *, const ImplicitParamDecl *, 2>
+      sizeArguments;
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adams381 wrote:

Done.

https://github.com/llvm/llvm-project/pull/191482