[flang-commits] [clang] [flang] [Flang][Driver] Support for -fsplit-lto-unit option in flang driver (PR #202858)

via flang-commits flang-commits at lists.llvm.org
Tue Jun 9 22:46:23 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 -- clang/lib/Driver/ToolChains/Flang.cpp flang/lib/Frontend/CompilerInvocation.cpp flang/lib/Frontend/FrontendActions.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/Flang.cpp b/clang/lib/Driver/ToolChains/Flang.cpp
index 82917e515..d98ab694f 100644
--- a/clang/lib/Driver/ToolChains/Flang.cpp
+++ b/clang/lib/Driver/ToolChains/Flang.cpp
@@ -284,7 +284,7 @@ void Flang::addLTOOptions(const ArgList &Args, ArgStringList &CmdArgs) const {
     CmdArgs.push_back("-flto=thin");
 
   if (Arg *splitLTOArg = Args.getLastArg(options::OPT_fsplit_lto_unit,
-                                          options::OPT_fno_split_lto_unit)) {
+                                         options::OPT_fno_split_lto_unit)) {
     if (splitLTOArg->getOption().matches(options::OPT_fsplit_lto_unit)) {
       CmdArgs.push_back("-fsplit-lto-unit");
     }

``````````

</details>


https://github.com/llvm/llvm-project/pull/202858


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