[llvm] [TabeGen] Add `PreferSmallerInstructions` for Targets. (PR #83587)

[Alfie Richards via llvm-commits]

================
@@ -1724,6 +1724,11 @@ class Target {
   // setting hasExtraDefRegAllocReq and hasExtraSrcRegAllocReq to 1
   // for all opcodes if this flag is set to 0.
   int AllowRegisterRenaming = 0;
+
+  // PreferSmallerInstructions = Should the assembly matcher prefer the smaller
----------------
AlfieRichardsArm wrote:

Done

https://github.com/llvm/llvm-project/pull/83587