[llvm] [AArch64] C1-Ultra Scheduling model (PR #182251)

[David Green via llvm-commits]

================
@@ -0,0 +1,2367 @@
+//=- AArch64SchedC1Ultra.td - C1 Ultra Scheduling Defs --*- tablegen -*-=//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the scheduling model for the C1 Ultra processors.
+// Information is taken from the C1 Ultra Software Optimization Guide
+// 
+// https://developer.arm.com/documentation/111079/3-0
+//
+//===----------------------------------------------------------------------===//
+
+def C1UltraModel : SchedMachineModel {
+  let IssueWidth            =  11;
----------------
davemgreen wrote:

10, unless you have some reason to prefer 11?

https://github.com/llvm/llvm-project/pull/182251