[llvm] [GISel] Add KnownFPClass Analysis to GISelValueTrackingPass (PR #134611)

[Matt Arsenault via llvm-commits]

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@@ -804,6 +834,14 @@ m_c_GFCmp(const Pred &P, const LHS &L, const RHS &R) {
   return CompareOp_match<Pred, LHS, RHS, TargetOpcode::G_FCMP, true>(P, L, R);
 }
 
+/// Matches a register not-ed by a G_XOR.
+/// G_XOR %not_reg, -1
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arsenm wrote:

Comment copy paste error 

https://github.com/llvm/llvm-project/pull/134611