[llvm] [CodeGen] Introduce Static Data Splitter pass (PR #122183)

[Ellis Hoag via llvm-commits]

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@@ -88,6 +88,15 @@ template <> struct ilist_callback_traits<MachineBasicBlock> {
   }
 };
 
+// The hotness of static data tracked by a MachineFunction and not represented
+// as a global object in the module IR / MIR. Typical examples are
+// MachineJumpTableInfo and MachineConstantPool.
+enum class DataHotness {
+  Unknown,
+  Cold,
+  Hot,
+};
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ellishg wrote:

>From the name alone I would think this applied to global IR constants, but this doesn't appear to be the case. Can we make the name more specific?

https://github.com/llvm/llvm-project/pull/122183