WebAssembly control flow instructions

WebAssembly control flow instructions.

block

Creates a label that can later be branched out of with a br.

br

Branches to a loop, block, or if.

br_if

Branches to a loop, block, or if, based on a boolean condition.

br_table

Branches to different loop, block, or if statements, based on an argument.

call

Calls a function.

drop

Pops a value from the stack, and discards it.

end

Can be used to end a block, loop, if, or else.

if...else

Executes a statement if the last item on the stack is true (non-zero).

loop

Creates a label that can later be branched to with a br.

nop

Does nothing.

return

Returns from a function.

select

Selects one of its first two operands based on a boolean condition.

unreachable

Denotes a point in code that should not be reachable.