ishl : integer shift left : index : visitInsn()

Description

Pops two ints off the stack. Shifts value2 left by the amount indicated in the five low bits of value1. The int result is then pushed back onto the stack.

This is the same as computing the expression:

x * 2<sup>s

where s is value1 and x is value2.</sup>

Example

; This is like the Java code:
;      int x;
;      x <<= 3;
;
iload_1          ; push integer in local variable 1 onto stack
iconst_3         ; push the integer 3 onto the stack
ishl             ; shift left
istore_1         ; store the result in local variable 1

See also

ishr iushr lshl lshr lushr iand land ior lor ixor lxor

Stack

Before	After
value1	result
value2	...
...	...

Bytecode

Type	Description
u1	ishl opcode = 0x78 (120)