[clang] [llvm] [llc] Add -mtune option (PR #186998)

[via cfe-commits]

github-actions[bot] wrote:

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


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- clang/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp llvm/include/llvm/CodeGen/CommandFlags.h llvm/lib/CodeGen/CommandFlags.cpp llvm/tools/llc/llc.cpp llvm/tools/llvm-opt-fuzzer/llvm-opt-fuzzer.cpp llvm/tools/opt/optdriver.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:

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/llvm/lib/CodeGen/CommandFlags.cpp b/llvm/lib/CodeGen/CommandFlags.cpp
index 2f215c9f0..403fd49c5 100644
--- a/llvm/lib/CodeGen/CommandFlags.cpp
+++ b/llvm/lib/CodeGen/CommandFlags.cpp
@@ -648,8 +648,8 @@ codegen::InitTargetOptionsFromCodeGenFlags(const Triple &TheTriple) {
 std::string codegen::getCPUStr() {
   std::string MCPU = getMCPU();
 
-  // If user asked for the 'native' CPU, autodetect here. If auto-detection fails,
-  // this will set the CPU to an empty string which tells the target to
+  // If user asked for the 'native' CPU, autodetect here. If auto-detection
+  // fails, this will set the CPU to an empty string which tells the target to
   // pick a basic default.
   if (MCPU == "native")
     return std::string(sys::getHostCPUName());

``````````

</details>


https://github.com/llvm/llvm-project/pull/186998