[llvm-branch-commits] [llvm] ValueTracking: Handle amdgcn_exp2 in computeKnownFPClass (PR #172495)

[Jay Foad via llvm-branch-commits]

================
@@ -5374,7 +5374,8 @@ void computeKnownFPClass(const Value *V, const APInt &DemandedElts,
     }
     case Intrinsic::exp:
     case Intrinsic::exp2:
-    case Intrinsic::exp10: {
+    case Intrinsic::exp10:
+    case Intrinsic::amdgcn_exp2: {
       Known.knownNot(fcNegative);
       if ((InterestedClasses & fcNan) == fcNone)
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jayfoad wrote:

```suggestion
      if ((InterestedClasses & (fcNan | fcSubnormal)) == fcNone)
```

https://github.com/llvm/llvm-project/pull/172495