[clang] [Cygwin] Cygwin basic support (PR #74868)

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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. :warning:

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You can test this locally with the following command:
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``````````bash
git-clang-format --diff 49b27b150b97c190dedf8b45bf991c4b811ed953 680b2b48925d52c006eee5f26b1173856dfcf376 -- clang/lib/Basic/Targets/X86.h clang/lib/Driver/ToolChains/Clang.cpp
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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/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 8b38c9e386..df062ccc90 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6656,9 +6656,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // -fuse-cxa-atexit is default.
   if (!Args.hasFlag(
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
-          !RawTriple.isOSAIX()
-          && !RawTriple.isWindowsGNUEnvironment()
-          && !RawTriple.isWindowsMSVCEnvironment() &&
+          !RawTriple.isOSAIX() && !RawTriple.isWindowsGNUEnvironment() &&
+              !RawTriple.isWindowsMSVCEnvironment() &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)

``````````

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https://github.com/llvm/llvm-project/pull/74868