question: private static RopMethod optimizeMinimizeRegisters ( RopMethod rmeth , int paramWidth , boolean isStatic , EnumSet < OptionalStep > steps ) { SsaMethod ssaMeth ; RopMethod resultMeth ; ssaMeth = SsaConverter . convertToSsaMethod ( rmeth , paramWidth , isStatic ) ; EnumSet < OptionalStep > newSteps = steps . clone ( ) ; newSteps . remove ( OptionalStep . CONST_COLLECTOR ) ; runSsaFormSteps ( ssaMeth , newSteps ) ; resultMeth = SsaToRop . convertToRopMethod ( ssaMeth , true ) ; return resultMeth ; }
target:  Runs the optimizer with a strategy to minimize the number of rop-form registers used by the end result. Dex bytecode does not have instruction forms that take register numbers larger than 15 for all instructions. If we've produced a method that uses more than 16 registers, try again with a different strategy to see if we can get under the bar. The end result will be much more efficient.