[clang] [llvm] [DirectX][DXIL] Set DXIL Version in DXIL target triple based on shader model version (PR #90809)

[Xiang Li via cfe-commits]

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@@ -760,7 +760,7 @@ using namespace clang::targets;
 TargetInfo *
 TargetInfo::CreateTargetInfo(DiagnosticsEngine &Diags,
                              const std::shared_ptr<TargetOptions> &Opts) {
-  llvm::Triple Triple(Opts->Triple);
+  llvm::Triple Triple(llvm::Triple::normalize(Opts->Triple));
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python3kgae wrote:

I see. It is trying to add subarch for dxil.
Could we allow Triple::NoSubArch for dxil?
Backend could do the job to translate NoSubArch to the version based on shader 
model.

https://github.com/llvm/llvm-project/pull/90809
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