[clang] [HLSL] Support vector swizzles on scalars (PR #67700)

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

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

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``````````bash
git-clang-format --diff 6bbccc0bcb36689507ba98ef338527d43334c7e7 2fa183da3991c0bc4da6163609331d198f4a37af -- clang/lib/Lex/Lexer.cpp clang/lib/Lex/LiteralSupport.cpp clang/lib/Sema/SemaExprMember.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaExprMember.cpp b/clang/lib/Sema/SemaExprMember.cpp
index 2de5579df271..96db63739f97 100644
--- a/clang/lib/Sema/SemaExprMember.cpp
+++ b/clang/lib/Sema/SemaExprMember.cpp
@@ -1693,8 +1693,8 @@ static ExprResult LookupMemberExpr(Sema &S, LookupResult &R,
     QualType VectorTy = S.Context.getExtVectorType(BaseType, 1);
     BaseExpr = S.ImpCastExprToType(BaseExpr.get(), VectorTy, CK_VectorSplat,
                                    BaseExpr.get()->getValueKind());
-    return LookupMemberExpr(S, R, BaseExpr, IsArrow, OpLoc, SS,
-                                ObjCImpDecl, HasTemplateArgs, TemplateKWLoc);
+    return LookupMemberExpr(S, R, BaseExpr, IsArrow, OpLoc, SS, ObjCImpDecl,
+                            HasTemplateArgs, TemplateKWLoc);
   }
 
   S.Diag(OpLoc, diag::err_typecheck_member_reference_struct_union)

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https://github.com/llvm/llvm-project/pull/67700