[clang] [llvm] [HLSL] Implementation of dot intrinsic (PR #81190)

[Chris B via cfe-commits]

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@@ -4518,6 +4518,12 @@ def HLSLCreateHandle : LangBuiltin<"HLSL_LANG"> {
   let Prototype = "void*(unsigned char)";
 }
 
+def HLSLDotProduct : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_dot"];
+  let Attributes = [NoThrow, Const, CustomTypeChecking];
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llvm-beanz wrote:

The overload resolution issues you're hitting are currently expected. PR #71098, implements handling for the vector element conversions, although there are still some issues lingering around HLSL's rules for promotions and conversions (https://github.com/llvm/llvm-project/issues/81047 & https://github.com/llvm/llvm-project/issues/81049).

https://github.com/llvm/llvm-project/pull/81190