[clang] [llvm] [Clang] Support `--offload-compress` for offload binaries (PR #227765)

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Fri Oct 9 15:03:49 PDT 2026


github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<details>
<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,c,h -- clang/test/OffloadTools/clang-linker-wrapper/linker-wrapper-compressed.c clang/include/clang/Driver/CommonArgs.h clang/lib/Driver/ToolChains/Clang.cpp clang/lib/Driver/ToolChains/CommonArgs.cpp clang/lib/Driver/ToolChains/HIPUtility.cpp llvm/tools/llvm-offload-binary/llvm-offload-binary.cpp --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 6f1c9fb8e..bef673e04 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -3039,7 +3039,8 @@ void tools::addOffloadCompressArgs(const llvm::opt::ArgList &TCArgs,
   if (TCArgs.hasFlag(options::OPT_offload_compress,
                      options::OPT_no_offload_compress, false))
     CmdArgs.push_back("--compress");
-  if (auto *Arg = TCArgs.getLastArg(options::OPT_offload_compression_level_EQ)) {
+  if (auto *Arg =
+          TCArgs.getLastArg(options::OPT_offload_compression_level_EQ)) {
     // llvm-offload-binary rejects a level unless the format is named. Pick the
     // same default the tool would: zstd, or zlib when zstd is not built.
     if (EmitCompressionFormat) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/227765


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