[clang] [libc] [flang] [clang-tools-extra] [llvm] [libcxx] [lld] [lldb] [OpenACC] Initial commits to support OpenACC (PR #70234)

[Alexey Bataev via cfe-commits]

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@@ -1349,6 +1349,19 @@ def fno_hip_emit_relocatable : Flag<["-"], "fno-hip-emit-relocatable">,
   HelpText<"Do not override toolchain to compile HIP source to relocatable">;
 }
 
+// Clang specific/exclusive options for OpenACC.
+def openacc_macro_override
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alexey-bataev wrote:

Why do you need this form? Is not EQ form is enough?

https://github.com/llvm/llvm-project/pull/70234