[llvm] [AArch64] AArch64TargetLowering::computeKnownBitsForTargetNode - add support for AArch64ISD::MOV/MVN constants (PR #154039)

[Simon Pilgrim via llvm-commits]

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@@ -30624,6 +30650,10 @@ bool AArch64TargetLowering::isTargetCanonicalConstantNode(SDValue Op) const {
   return Op.getOpcode() == AArch64ISD::DUP ||
          Op.getOpcode() == AArch64ISD::MOVI ||
          Op.getOpcode() == AArch64ISD::MOVIshift ||
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RKSimon wrote:

Do you have to handle a bitcast/nvcast as well from int to fp?

https://github.com/llvm/llvm-project/pull/154039