[clang] [AMDGPU] Allow the AS identifying builtins to take flat pointers (PR #230677)

[Shilei Tian via cfe-commits]

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+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fsyntax-only -verify -x c %s
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fsyntax-only -verify -x c++ %s
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device -x hip -fsyntax-only -verify %s
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -cl-std=CL1.2 -fsyntax-only -verify -x cl %s
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -cl-std=CL2.0 -fsyntax-only -verify -x cl %s
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shiltian wrote:

new target triple

https://github.com/llvm/llvm-project/pull/230677