[clang] [Clang][AMDGPU] Add a new builtin type for buffer rsrc (PR #94830)

[Shilei Tian via cfe-commits]

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@@ -0,0 +1,9 @@
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -fclang-abi-compat=latest -triple amdgcn %s -emit-llvm -o - | FileCheck %s
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shiltian wrote:

Copy/paste from other tests Lol

https://github.com/llvm/llvm-project/pull/94830