[llvm] [InlineAsm] wrap ConstraintCode in enum class NFC (PR #66003)

[Jessica Clarke via llvm-commits]

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@@ -2521,13 +2521,13 @@ AVRTargetLowering::getConstraintType(StringRef Constraint) const {
   return TargetLowering::getConstraintType(Constraint);
 }
 
-unsigned
+InlineAsm::ConstraintCode
 AVRTargetLowering::getInlineAsmMemConstraint(StringRef ConstraintCode) const {
   // Not sure if this is actually the right thing to do, but we got to do
   // *something* [agnat]
   switch (ConstraintCode[0]) {
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jrtc27 wrote:

Disagree. This causes much less churn if and when new cases need to be added.

https://github.com/llvm/llvm-project/pull/66003