[clang] [HIP] Support compressing device binary (PR #67162)

[Yaxun Liu via cfe-commits]

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@@ -1183,6 +1183,10 @@ def fgpu_inline_threshold_EQ : Joined<["-"], "fgpu-inline-threshold=">,
 def fgpu_sanitize : Flag<["-"], "fgpu-sanitize">, Group<f_Group>,
   HelpText<"Enable sanitizer for supported offloading devices">;
 def fno_gpu_sanitize : Flag<["-"], "fno-gpu-sanitize">, Group<f_Group>;
+
+def foffload_compress : Flag<["-"], "foffload-compress">,
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yxsamliu wrote:

The convention is to introduce a generic option which works for a specific offloading language, and the help message indicates which languages are supported. It is not feasible to support a feature in all offloading languages at once by one developer since a developer is usually only familiar with one offloading language. Once a feature is introduced for one offloading language, it can be extended or adopted by other offloading languages. This is better than each offloading language introducing an individual option for the same purpose.

https://github.com/llvm/llvm-project/pull/67162