[llvm] [InstSimplify] Provide information about the range of possible values that `ucmp`/`scmp` can return (PR #96410)

[via llvm-commits]

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@@ -9393,6 +9393,10 @@ static ConstantRange getRangeForIntrinsic(const IntrinsicInst &II) {
     if (!II.getParent() || !II.getFunction())
       break;
     return getVScaleRange(II.getFunction(), Width);
+  case Intrinsic::scmp:
+  case Intrinsic::ucmp:
+    return ConstantRange::getNonEmpty(APInt::getAllOnes(Width),
+                                      APInt::getOneBitSet(Width, 0));
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Poseydon42 wrote:

Thanks, fixed.

https://github.com/llvm/llvm-project/pull/96410