[clang] [llvm] [SPIRV][HLSL] Add DXC compatibility option for extension (PR #151554)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- clang/lib/Driver/ToolChains/HLSL.cpp llvm/lib/Target/SPIRV/SPIRVCommandLine.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Driver/ToolChains/HLSL.cpp b/clang/lib/Driver/ToolChains/HLSL.cpp
index 48761c254..04942e659 100644
--- a/clang/lib/Driver/ToolChains/HLSL.cpp
+++ b/clang/lib/Driver/ToolChains/HLSL.cpp
@@ -177,35 +177,23 @@ std::string getSpirvExtOperand(llvm::StringRef SpvExtensionArg) {
   // The extensions that are commented out are supported in DXC, but the SPIR-V
   // backend does not know about them yet.
   static const std::vector<std::string> DxcSupportedExtensions = {
-      "SPV_KHR_16bit_storage",
-      "SPV_KHR_device_group",
-      "SPV_KHR_fragment_shading_rate",
-      "SPV_KHR_multiview",
-      "SPV_KHR_post_depth_coverage",
-      "SPV_KHR_non_semantic_info",
-      "SPV_KHR_shader_draw_parameters",
-      "SPV_KHR_ray_tracing",
-      "SPV_KHR_shader_clock",
-      "SPV_EXT_demote_to_helper_invocation",
-      "SPV_EXT_descriptor_indexing",
-      "SPV_EXT_fragment_fully_covered",
+      "SPV_KHR_16bit_storage", "SPV_KHR_device_group",
+      "SPV_KHR_fragment_shading_rate", "SPV_KHR_multiview",
+      "SPV_KHR_post_depth_coverage", "SPV_KHR_non_semantic_info",
+      "SPV_KHR_shader_draw_parameters", "SPV_KHR_ray_tracing",
+      "SPV_KHR_shader_clock", "SPV_EXT_demote_to_helper_invocation",
+      "SPV_EXT_descriptor_indexing", "SPV_EXT_fragment_fully_covered",
       "SPV_EXT_fragment_invocation_density",
-      "SPV_EXT_fragment_shader_interlock",
-      "SPV_EXT_mesh_shader",
-      "SPV_EXT_shader_stencil_export",
-      "SPV_EXT_shader_viewport_index_layer",
+      "SPV_EXT_fragment_shader_interlock", "SPV_EXT_mesh_shader",
+      "SPV_EXT_shader_stencil_export", "SPV_EXT_shader_viewport_index_layer",
       // "SPV_AMD_shader_early_and_late_fragment_tests",
-      "SPV_GOOGLE_hlsl_functionality1",
-      "SPV_GOOGLE_user_type",
-      "SPV_KHR_ray_query",
-      "SPV_EXT_shader_image_int64",
-      "SPV_KHR_fragment_shader_barycentric",
-      "SPV_KHR_physical_storage_buffer",
+      "SPV_GOOGLE_hlsl_functionality1", "SPV_GOOGLE_user_type",
+      "SPV_KHR_ray_query", "SPV_EXT_shader_image_int64",
+      "SPV_KHR_fragment_shader_barycentric", "SPV_KHR_physical_storage_buffer",
       "SPV_KHR_vulkan_memory_model",
       // "SPV_KHR_compute_shader_derivatives",
       // "SPV_KHR_maximal_reconvergence",
-      "SPV_KHR_float_controls",
-      "SPV_NV_shader_subgroup_partitioned",
+      "SPV_KHR_float_controls", "SPV_NV_shader_subgroup_partitioned",
       // "SPV_KHR_quad_control"
   };
 

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https://github.com/llvm/llvm-project/pull/151554