[clang] [llvm] [HLSL] Add WaveGetLaneCount() intrinsic to FE (PR #143127)

[Nathan Gauër via llvm-commits]

================
@@ -4909,6 +4909,12 @@ def HLSLWaveReadLaneAt : LangBuiltin<"HLSL_LANG"> {
   let Prototype = "void(...)";
 }
 
+def HLSLWaveGetLaneCount : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_wave_get_lane_count"];
+  let Attributes = [NoThrow, Const];
+  let Prototype = "unsigned int()";
----------------
Keenuts wrote:

Mistake was on the other file, changed!

https://github.com/llvm/llvm-project/pull/143127