[clang] [CIR] Handle Type::OverflowBehavior in CIRGenItaniumCXXABI (PR #182469)

[via cfe-commits]

https://github.com/skc7 created https://github.com/llvm/llvm-project/pull/182469

This PR adds OverflowBehavior  case to CIRGenItaniumCXXABI. 
Fixes CI failures in clangIR introduced by https://github.com/llvm/llvm-project/pull/148914

>From 8524dee3f2486fd5b03386fd81b9b151aaa2363d Mon Sep 17 00:00:00 2001
From: skc7 <Krishna.Sankisa at amd.com>
Date: Fri, 20 Feb 2026 15:58:34 +0530
Subject: [PATCH] [CIR] Handle Type::OverflowBehavior in CIRGenItaniumCXXABI

---
 clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp b/clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp
index aca2278c3876c..a4fdf8b33216b 100644
--- a/clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp
@@ -960,6 +960,7 @@ const char *vTableClassNameForType(const CIRGenModule &cgm, const Type *ty) {
 
   case Type::Builtin:
   case Type::BitInt:
+  case Type::OverflowBehavior:
   // GCC treats vector and complex types as fundamental types.
   case Type::Vector:
   case Type::ExtVector:
@@ -1388,6 +1389,9 @@ mlir::Attribute CIRGenItaniumRTTIBuilder::buildTypeInfo(
   case Type::BitInt:
     break;
 
+  case Type::OverflowBehavior:
+    break;
+
   case Type::ConstantArray:
   case Type::IncompleteArray:
   case Type::VariableArray: