[clang] [Driver] Support using toolchain libc and libc++ for baremetal (PR #96736)

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github-actions[bot] wrote:

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


:warning: C/C++ code formatter, clang-format found issues in your code. 
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You can test this locally with the following command:
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``````````bash
git-clang-format --diff 7f1a74429dfd62a410d4b51d2e75d3677429a51a 
b52e1015bf45a1f503ff4b7a890efd1a449881da -- 
clang/include/clang/Driver/ToolChain.h clang/lib/Driver/ToolChain.cpp 
clang/lib/Driver/ToolChains/BareMetal.cpp clang/test/Driver/baremetal.cpp
``````````

</details>

<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Driver/ToolChains/BareMetal.cpp 
b/clang/lib/Driver/ToolChains/BareMetal.cpp
index 11f94877a5..a4c4ecb4e5 100644
--- a/clang/lib/Driver/ToolChains/BareMetal.cpp
+++ b/clang/lib/Driver/ToolChains/BareMetal.cpp
@@ -323,15 +323,15 @@ void BareMetal::AddClangCXXStdlibIncludeArgs(const 
ArgList &DriverArgs,
   };
 
   switch (GetCXXStdlibType(DriverArgs)) {
-    case ToolChain::CST_Libcxx: {
-      SmallString<128> P(D.Dir);
-      llvm::sys::path::append(P, "..", "include");
-      AddCXXIncludePath(P);
-      break;
-    }
-    case ToolChain::CST_Libstdcxx:
-      // We only support libc++ toolchain installation.
-      break;
+  case ToolChain::CST_Libcxx: {
+    SmallString<128> P(D.Dir);
+    llvm::sys::path::append(P, "..", "include");
+    AddCXXIncludePath(P);
+    break;
+  }
+  case ToolChain::CST_Libstdcxx:
+    // We only support libc++ toolchain installation.
+    break;
   }
 
   std::string SysRoot(computeSysRoot());

``````````

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https://github.com/llvm/llvm-project/pull/96736
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