[clang] [CIR] Infrastructure: class CIRGenBuilderTy; cache CIR types (PR #119037)

[Nathan Lanza via cfe-commits]

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@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_CIRBASEBUILDER_H
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lanza wrote:

Yup, our fault originally :p 

https://github.com/llvm/llvm-project/pull/119037