message: [XLA] Add TODO about duplicated erfinv function.
  Comment-only change.
diff: @@ -857,6 +857,9 @@ llvm::Value* ElementalIrEmitter::EmitFloatMin(llvm::Value* lhs_value,
  return llvm_ir::EmitFloatMin(lhs_value, rhs_value, b_);
  }
  +// TODO(b/123355973): We have an implementation of erfinv in math.cc. We
  +// shouldn't have two implementations, especially since this one isn't testable
  +// (it's only observable via a normally-distributed RNG).
  StatusOr<llvm::Value*> ElementalIrEmitter::EmitErfInv(PrimitiveType prim_type,
  llvm::Value* x) {
  if (prim_type != F16 && prim_type != F32 && prim_type != F64) {
  