[clang] [HLSL] set alwaysinline on HLSL functions (PR #106588)

[Chris B via cfe-commits]

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@@ -290,8 +290,6 @@ struct BuiltinTypeDeclBuilder {
                                              SourceLocation()));
     MethodDecl->setLexicalDeclContext(Record);
     MethodDecl->setAccess(AccessSpecifier::AS_public);
-    MethodDecl->addAttr(AlwaysInlineAttr::CreateImplicit(
-        AST, SourceRange(), AlwaysInlineAttr::CXX11_clang_always_inline));
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llvm-beanz wrote:

We don't really have a workflow in Clang implemented yet for separate compilation. The analog in DXC would be something like `-T lib_6_x -default-linkage=external`. In that case we would still want these functions to be inlined, and we can accomplish that with this attribute.

https://github.com/llvm/llvm-project/pull/106588