question: private boolean compileSWsequenceZR ( int baseRegister , int [ ] offsets , int [ ] registers ) { for ( int i = 0 ; i < registers . length ; i ++ ) { if ( registers [ i ] != _zr ) { return false ; } } for ( int i = 1 ; i < offsets . length ; i ++ ) { if ( offsets [ i ] != offsets [ i - 1 ] + 4 ) { return false ; } } int offset = offsets [ 0 ] ; int length = offsets . length ; do { int copyLength = Math . min ( length , FastMemory . zero . length ) ; mv . visitFieldInsn ( Opcodes . GETSTATIC , Type . getInternalName ( FastMemory . class ) , "zero" , "[I" ) ; loadImm ( 0 ) ; loadMemoryInt ( ) ; prepareMemIndex ( baseRegister , offset , false , 32 ) ; loadImm ( copyLength ) ; mv . visitMethodInsn ( Opcodes . INVOKESTATIC , Type . getInternalName ( System . class ) , "arraycopy" , arraycopyDescriptor ) ; length -= copyLength ; offset += copyLength ; } while ( length > 0 ) ; return true ; }
target:  Compile a sequence sw  $zr, n($reg) sw  $zr, n+4($reg) sw  $zr, n+8($reg) ... into System.arraycopy(FastMemory.zero, 0, memoryInt, (n + $reg) >> 2, length)