[clang] [Clang][OpenCL] Declare cl_amd_media_ops/cl_amd_media_ops2 builtins with -fdeclare-opencl-builtins (PR #143507)

[Juan Manuel Martinez Caamaño via cfe-commits]

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@@ -0,0 +1,98 @@
+// RUN: %clang_cc1 %s -triple amdgcn-unknown-unknown -verify -pedantic -Wconversion -Werror -fsyntax-only -cl-std=CL -finclude-default-header %s
+// RUN: %clang_cc1 %s -triple amdgcn-unknown-unknown -verify -pedantic -Wconversion -Werror -fsyntax-only -cl-std=CL -finclude-default-header -fdeclare-opencl-builtins %s
+// expected-no-diagnostics
+
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jmmartinez wrote:

These extensions are enabled by default on amdgcn targets: https://clang.llvm.org/doxygen/Basic_2Targets_2AMDGPU_8h_source.html#l00319

Should I add a test where we reject these extensions on some other target (spirv maybe) ?

https://github.com/llvm/llvm-project/pull/143507