[flang] [llvm] [clang] [Flang] Add code-object-version option (PR #72638)

[Dominik Adamski via cfe-commits]

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@@ -85,6 +85,19 @@ class CodeGenOptions : public CodeGenOptionsBase {
     RK_WithPattern, // Remark pattern specified via '-Rgroup=regexp'.
   };
 
+  /// \brief Enumeration value for AMDGPU code object version, which is the
+  /// code object version times 100.
+  enum class CodeObjectVersionKind {
+    COV_None,
+    COV_2 = 200, // Unsupported.
+    COV_3 = 300, // Unsupported.
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DominikAdamski wrote:

COV_NONE means no emit of global item
COV_2,COV_3 -> unsupported
If user does not specify version then default version COV_4 is set
see file for more information about code-object version:  https://llvm.org/docs/AMDGPUUsage.html#code-object-metadata .

BTW. Is it possible to set the default version for Flang in similar way as it is done for Clang? Could we use similar macro:  MarshallingInfoEnum<TargetOpts<"CodeObjectVersion">, "COV_4"> file ( https://github.com/llvm/llvm-project/blob/main/clang/include/clang/Driver/Options.td#L4716 ); and replace Clang struct TargetOpts with Flang struct ? 


https://github.com/llvm/llvm-project/pull/72638