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v/examples/wasm_codegen/control_flow.v

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741 B
V

import wasm
fn main() {
mut m := wasm.Module{}
mut bif := m.new_function('block_if', [.i32_t], [.i32_t])
{
loc := bif.new_local(.i32_t)
// loc = i32.const 10
bif.i32_const(10)
bif.local_set(loc)
blk := bif.c_block([], [])
{
// if argument[0], break
bif.local_get(0)
bif.c_br_if(blk)
// loc = i32.const 11
bif.i32_const(11)
bif.local_set(loc)
}
bif.c_end(blk)
// return loc
bif.local_get(loc)
}
m.commit(bif, true)
mut ifexpr := m.new_function('if_expr', [.i32_t], [.i64_t])
{
ifexpr.local_get(0)
ifexpr.c_if([], [.i64_t])
{
ifexpr.i64_const(5000)
}
ifexpr.c_else()
{
ifexpr.i64_const(-5000)
}
ifexpr.c_end_if()
}
m.commit(ifexpr, true)
print(m.compile().bytestr())
}