[llvm] IVDesc: unify RecurKinds IAnyOf and FAnyOf (PR #118393)

[David Sherwood via llvm-commits]

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@@ -209,7 +207,9 @@ class RecurrenceDescriptor {
 
   RecurKind getRecurrenceKind() const { return Kind; }
 
-  unsigned getOpcode() const { return getOpcode(getRecurrenceKind()); }
+  unsigned getOpcode() const {
+    return getOpcode(getRecurrenceKind(), getRecurrenceType());
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david-arm wrote:

It looks like @artagnon is just lucky here. In `isRecurrenceInstr` both the icmp and fcmp opcodes go down the same path. Similarly, in `getReductionOpChain` we go down the same path for fcmp and icmp.

https://github.com/llvm/llvm-project/pull/118393