[llvm] [VirtRegMap] Replace a single value enum with a static constexpr member variable. NFC (PR #109010)

[Craig Topper via llvm-commits]

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@@ -32,9 +32,7 @@ class TargetInstrInfo;
 
   class VirtRegMap : public MachineFunctionPass {
   public:
-    enum {
-      NO_STACK_SLOT = (1L << 30)-1,
-    };
+    static constexpr unsigned NO_STACK_SLOT = (1u << 30) - 1;
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topperc wrote:

> judging by the return type of `getStackSlot` this should be `int` instead?

Yep. I had unsigned on the brain, then changed it but forgot to commit it.

https://github.com/llvm/llvm-project/pull/109010