[llvm-branch-commits] [llvm] DAG: Handle AssertNoFPClass in computeKnownBits (PR #167289)

[Simon Pilgrim via llvm-branch-commits]

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@@ -4121,6 +4121,27 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts,
     Known.One.clearLowBits(LogOfAlign);
     break;
   }
+  case ISD::AssertNoFPClass: {
+    Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
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RKSimon wrote:

Mainly just through bitcasts to wrapped integer logic etc. But X86 does successfully use it for some of its FP node types

https://github.com/llvm/llvm-project/pull/167289