[llvm] [AMDGPU] Add support for GFX12 expert scheduling mode 2 (PR #170319)

[Jay Foad via llvm-commits]

================
@@ -204,6 +222,10 @@ static bool isNormalMode(InstCounterType MaxCounter) {
 }
 #endif // NDEBUG
 
+static bool isExpertMode(InstCounterType MaxCounter) {
----------------
jayfoad wrote:

@RyanRio I think somewhere you refactored this to use a real bool flag instead of basing it on MaxCounter. Should I pull that change into this patch?

https://github.com/llvm/llvm-project/pull/170319