wasmi 0.36.0

WebAssembly interpreter
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84

use super::*;
use crate::core::TrapCode;

const WASM_OP: WasmOp = WasmOp::binary(WasmType::I64, "div_u");

#[test]
#[cfg_attr(miri, ignore)]
fn same_reg() {
    // Note: we cannot optimize for `x / x` since `x == 0` has to trap.
    let expected = [
        Instruction::i64_div_u(
            Register::from_i16(1),
            Register::from_i16(0),
            Register::from_i16(0),
        ),
        Instruction::return_reg(Register::from_i16(1)),
    ];
    test_binary_same_reg(WASM_OP, expected)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_reg() {
    test_binary_reg_reg(WASM_OP, Instruction::i64_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16() {
    test_binary_reg_imm16::<NonZeroU64>(WASM_OP, nonzero_u64(100), Instruction::i64_div_u_imm16)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16_rev() {
    test_binary_reg_imm16_rev::<u64>(WASM_OP, 100, Instruction::i64_div_u_imm16_rev)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm() {
    test_binary_reg_imm32(WASM_OP, i64::MAX, Instruction::i64_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm_rev() {
    test_binary_reg_imm32_rev(WASM_OP, i64::MAX, Instruction::i64_div_u)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_zero() {
    let expected = [Instruction::Trap(TrapCode::IntegerDivisionByZero)];
    test_binary_reg_imm_with(WASM_OP, 0_i64, expected).run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_one() {
    let expected = [Instruction::return_reg(0)];
    test_binary_reg_imm_with(WASM_OP, 1_i64, expected).run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn consteval() {
    let lhs = 4;
    let rhs = 2;
    test_binary_consteval(WASM_OP, lhs, rhs, [return_i64imm32_instr(lhs / rhs)])
}

#[test]
#[cfg_attr(miri, ignore)]
fn consteval_div_by_zero() {
    let lhs = 4;
    let rhs = 0;
    test_binary_consteval(
        WASM_OP,
        lhs,
        rhs,
        [Instruction::Trap(TrapCode::IntegerDivisionByZero)],
    )
}