question: public List < Instruction > reduceInstructions ( final List < Instruction > instructions ) { lock . lock ( ) ; try { this . instructions = instructions ; stackSizeSimulator . buildStackSizes ( instructions ) ; return reduceInstructionsInternal ( instructions ) ; } finally { lock . unlock ( ) ; } }
target:  Returns all instructions which are somewhat "relevant" for the returned object of the method. The instructions are visited backwards - starting from the return statement. Load and Store operations are handled as well.