message: [XLA/GPU] Document EmitPrintf bug
diff: @@ -197,6 +197,7 @@ std::array<int64, 3> GetReductionTiling(
  const ReductionDimensions& reduction_dimensions);
  // Emits call to "vprintf" with given format and arguments.
  +// TODO(b/147893680): %f format specifier produces incorrect output, use %d.
  llvm::Value* EmitPrintf(absl::string_view fmt,
  absl::Span<llvm::Value* const> arguments,
  llvm::IRBuilder<>* builder);
  