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|
load(libdir + "wasm.js");
const RuntimeError = WebAssembly.RuntimeError;
// ----------------------------------------------------------------------------
// if
// Condition is an int32
wasmFailValidateText('(module (func (local f32) (if (get_local 0) (i32.const 1))))', mismatchError("f32", "i32"));
wasmFailValidateText('(module (func (local f32) (if (get_local 0) (i32.const 1) (i32.const 0))))', mismatchError("f32", "i32"));
wasmFailValidateText('(module (func (local f64) (if (get_local 0) (i32.const 1) (i32.const 0))))', mismatchError("f64", "i32"));
wasmEvalText('(module (func (local i32) (if (get_local 0) (nop))) (export "" 0))');
wasmEvalText('(module (func (local i32) (if (get_local 0) (nop) (nop))) (export "" 0))');
// Expression values types are consistent
wasmFailValidateText('(module (func (result i32) (local f32) (if f32 (i32.const 42) (get_local 0) (i32.const 0))))', mismatchError("i32", "f32"));
wasmFailValidateText('(module (func (result i32) (local f64) (if i32 (i32.const 42) (i32.const 0) (get_local 0))))', mismatchError("f64", "i32"));
assertEq(wasmEvalText('(module (func (result i32) (if i32 (i32.const 42) (i32.const 1) (i32.const 2))) (export "" 0))').exports[""](), 1);
assertEq(wasmEvalText('(module (func (result i32) (if i32 (i32.const 0) (i32.const 1) (i32.const 2))) (export "" 0))').exports[""](), 2);
// Even if we don't yield, sub expressions types still have to match.
wasmFailValidateText('(module (func (param f32) (if i32 (i32.const 42) (i32.const 1) (get_local 0))) (export "" 0))', mismatchError('f32', 'i32'));
wasmFailValidateText('(module (func (if i32 (i32.const 42) (i32.const 1) (i32.const 0))) (export "" 0))', /unused values not explicitly dropped by end of block/);
wasmFullPass('(module (func (drop (if i32 (i32.const 42) (i32.const 1) (i32.const 0)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (param f32) (if (i32.const 42) (drop (i32.const 1)) (drop (get_local 0)))) (export "run" 0))', undefined, {}, 13.37);
// Sub-expression values are returned
wasmFullPass(`(module
(func
(result i32)
(if i32
(i32.const 42)
(block i32
(
if i32
(block i32
(drop (i32.const 3))
(drop (i32.const 5))
(i32.const 0)
)
(i32.const 1)
(i32.const 2)
)
)
(i32.const 0)
)
)
(export "run" 0)
)`, 2);
// The if (resp. else) branch is taken iff the condition is true (resp. false)
counter = 0;
var imports = { "":{inc() { counter++ }} };
wasmFullPass(`(module
(import "" "inc" (result i32))
(func
(result i32)
(if i32
(i32.const 42)
(i32.const 1)
(call 0)
)
)
(export "run" 1)
)`, 1, imports);
assertEq(counter, 0);
wasmFullPass(`(module
(import "" "inc" (result i32))
(func
(result i32)
(if i32
(i32.const 0)
(call 0)
(i32.const 1)
)
)
(export "run" 1)
)`, 1, imports);
assertEq(counter, 0);
wasmFullPass(`(module
(import "" "inc" (result i32))
(func
(if
(i32.const 0)
(drop (call 0))
)
)
(export "run" 1)
)`, undefined, imports);
assertEq(counter, 0);
assertEq(wasmEvalText(`(module
(import "" "inc" (result i32))
(func
(if
(i32.const 1)
(drop (call 0))
)
)
(export "" 1)
)`, imports).exports[""](), undefined);
assertEq(counter, 1);
wasmFullPass(`(module
(func
(result i32)
(if i32
(i32.const 0)
(br 0 (i32.const 0))
(br 0 (i32.const 1))
)
)
(export "run" 0)
)`, 1);
assertEq(counter, 1);
wasmFullPass(`(module
(func
(if
(i32.const 1)
(br 0)
)
)
(export "run" 0)
)`, undefined);
assertEq(counter, 1);
// One can chain if with if/if
counter = 0;
wasmFullPass(`(module
(import "" "inc" (result i32))
(func
(result i32)
(if i32
(i32.const 1)
(if i32
(i32.const 2)
(if i32
(i32.const 3)
(if i32
(i32.const 0)
(call 0)
(i32.const 42)
)
(call 0)
)
(call 0)
)
(call 0)
)
)
(export "run" 1)
)`, 42, imports);
assertEq(counter, 0);
// "if" doesn't return an expression value
wasmFailValidateText('(module (func (result i32) (if i32 (i32.const 42) (i32.const 0))))', /if without else with a result value/);
wasmFailValidateText('(module (func (result i32) (if i32 (i32.const 42) (drop (i32.const 0)))))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (result i32) (if i32 (i32.const 1) (i32.const 0) (if i32 (i32.const 1) (i32.const 1)))))', /if without else with a result value/);
wasmFailValidateText('(module (func (result i32) (if i32 (i32.const 1) (drop (i32.const 0)) (if (i32.const 1) (drop (i32.const 1))))))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (if i32 (i32.const 1) (i32.const 0) (if i32 (i32.const 1) (i32.const 1)))))', /if without else with a result value/);
wasmFailValidateText('(module (func (if i32 (i32.const 1) (i32.const 0) (if (i32.const 1) (drop (i32.const 1))))))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (if (i32.const 1) (drop (i32.const 0)) (if i32 (i32.const 1) (i32.const 1)))))', /if without else with a result value/);
wasmEvalText('(module (func (if (i32.const 1) (drop (i32.const 0)) (if (i32.const 1) (drop (i32.const 1))))))');
// ----------------------------------------------------------------------------
// return
wasmFullPass('(module (func (return)) (export "run" 0))', undefined);
wasmFullPass('(module (func (result i32) (return (i32.const 1))) (export "run" 0))', 1);
wasmFullPass('(module (func (if (return) (i32.const 0))) (export "run" 0))', undefined);
wasmFailValidateText('(module (func (result i32) (return)) (export "" 0))', /popping value from empty stack/);
wasmFullPass('(module (func (return (i32.const 1))) (export "run" 0))', undefined);
wasmFailValidateText('(module (func (result f32) (return (i32.const 1))) (export "" 0))', mismatchError("i32", "f32"));
wasmFailValidateText('(module (func (result i32) (return)) (export "" 0))', /popping value from empty stack/);
// ----------------------------------------------------------------------------
// br / br_if
wasmFailValidateText('(module (func (result i32) (block (br 0))) (export "" 0))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (result i32) (br 0)) (export "" 0))', /popping value from empty stack/);
wasmFailValidateText('(module (func (result i32) (block (br_if 0 (i32.const 0)))) (export "" 0))', mismatchError("void", "i32"));
const DEPTH_OUT_OF_BOUNDS = /branch depth exceeds current nesting level/;
wasmFailValidateText('(module (func (br 1)))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (block (br 2))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (loop (br 2))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (if (i32.const 0) (br 2))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (if (i32.const 0) (br 1) (br 2))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (if (i32.const 0) (br 2) (br 1))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (br_if 1 (i32.const 0))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (block (br_if 2 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (loop (br_if 2 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText(`(module (func (result i32)
(block
(if
(br 0)
(i32.const 0)
(i32.const 2)
)
)
) (export "" 0))`, mismatchError("void", "i32"));
wasmFullPass(`(module (func (block $out (br_if $out (br 0)))) (export "run" 0))`, undefined);
wasmFullPass('(module (func (br 0)) (export "run" 0))', undefined);
wasmFullPass('(module (func (block (br 0))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $l (br $l))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block (block (br 1)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $l (block (br $l)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $l (block $m (br $l)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $l (block $m (br $m)))) (export "run" 0))', undefined);
wasmFullPass(`(module (func (result i32)
(block
(br 0)
(return (i32.const 0))
)
(return (i32.const 1))
) (export "run" 0))`, 1);
wasmFullPass(`(module (func (result i32)
(block
(block
(br 0)
(return (i32.const 0))
)
(return (i32.const 1))
)
(return (i32.const 2))
) (export "run" 0))`, 1);
wasmFullPass(`(module (func (result i32)
(block $outer
(block $inner
(br $inner)
(return (i32.const 0))
)
(return (i32.const 1))
)
(return (i32.const 2))
) (export "run" 0))`, 1);
var notcalled = false;
var called = false;
var imports = {"": {
notcalled() {notcalled = true},
called() {called = true}
}};
wasmFullPass(`(module
(import "" "notcalled")
(import "" "called")
(func
(block
(return (br 0))
(call 0)
)
(call 1)
) (export "run" 2))`, undefined, imports);
assertEq(notcalled, false);
assertEq(called, true);
wasmFullPass(`(module (func
(block
(i32.add
(i32.const 0)
(return (br 0))
)
)
(return)
) (export "run" 0))`, undefined);
wasmFullPass(`(module (func (result i32)
(block
(if
(i32.const 1)
(br 0)
(return (i32.const 0))
)
)
(return (i32.const 1))
) (export "run" 0))`, 1);
wasmFullPass('(module (func (br_if 0 (i32.const 1))) (export "run" 0))', undefined);
wasmFullPass('(module (func (br_if 0 (i32.const 0))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block (br_if 0 (i32.const 1)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block (br_if 0 (i32.const 0)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $l (br_if $l (i32.const 1)))) (export "run" 0))', undefined);
var isNonZero = wasmEvalText(`(module (func (result i32) (param i32)
(block
(br_if 0 (get_local 0))
(return (i32.const 0))
)
(return (i32.const 1))
) (export "" 0))`).exports[""];
assertEq(isNonZero(0), 0);
assertEq(isNonZero(1), 1);
assertEq(isNonZero(-1), 1);
// branches with values
// br/br_if and block
wasmFailValidateText('(module (func (result i32) (br 0)))', /popping value from empty stack/);
wasmFailValidateText('(module (func (result i32) (br 0 (f32.const 42))))', mismatchError("f32", "i32"));
wasmFailValidateText('(module (func (result i32) (block (br 0))))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (result i32) (block f32 (br 0 (f32.const 42)))))', mismatchError("f32", "i32"));
wasmFailValidateText(`(module (func (result i32) (param i32) (block (if i32 (get_local 0) (br 0 (i32.const 42))))) (export "" 0))`, /if without else with a result value/);
wasmFailValidateText(`(module (func (result i32) (param i32) (block i32 (if (get_local 0) (drop (i32.const 42))) (br 0 (f32.const 42)))) (export "" 0))`, mismatchError("f32", "i32"));
wasmFullPass('(module (func (result i32) (br 0 (i32.const 42)) (i32.const 13)) (export "run" 0))', 42);
wasmFullPass('(module (func (result i32) (block i32 (br 0 (i32.const 42)) (i32.const 13))) (export "run" 0))', 42);
wasmFailValidateText('(module (func) (func (block i32 (br 0 (call 0)) (i32.const 13))) (export "" 0))', /popping value from empty stack/);
wasmFailValidateText('(module (func) (func (block i32 (br_if 0 (call 0) (i32.const 1)) (i32.const 13))) (export "" 0))', /popping value from empty stack/);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (if (get_local 0) (drop (i32.const 42))) (i32.const 43))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 43);
wasmFailValidateText(`(module (func (result i32) (param i32) (block i32 (if i32 (get_local 0) (br 0 (i32.const 42))) (i32.const 43))) (export "" 0))`, /if without else with a result value/);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (if (get_local 0) (br 1 (i32.const 42))) (i32.const 43))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
wasmFailValidateText(`(module (func (result i32) (param i32) (block (br_if 0 (i32.const 42) (get_local 0)) (i32.const 43))) (export "" 0))`, /unused values not explicitly dropped by end of block/);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (drop (br_if 0 (i32.const 42) (get_local 0))) (i32.const 43))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (if (get_local 0) (drop (i32.const 42))) (br 0 (i32.const 43)))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 43);
wasmFailValidateText(`(module (func (result i32) (param i32) (block i32 (if i32 (get_local 0) (br 0 (i32.const 42))) (br 0 (i32.const 43)))) (export "" 0))`, /if without else with a result value/);
var f = wasmEvalText(`(module (func (result i32) (param i32) (if (get_local 0) (br 1 (i32.const 42))) (br 0 (i32.const 43))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (if (get_local 0) (br 1 (i32.const 42))) (br 0 (i32.const 43)))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
var f = wasmEvalText(`(module (func (result i32) (param i32) (br_if 0 (i32.const 42) (get_local 0)) (br 0 (i32.const 43))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
var f = wasmEvalText(`(module (func (result i32) (param i32) (block i32 (br_if 0 (i32.const 42) (get_local 0)) (br 0 (i32.const 43)))) (export "" 0))`).exports[""];
assertEq(f(0), 43);
assertEq(f(1), 42);
var f = wasmEvalText(`(module (func (param i32) (result i32) (i32.add (i32.const 1) (block i32 (if (get_local 0) (drop (i32.const 99))) (i32.const -1)))) (export "" 0))`).exports[""];
assertEq(f(0), 0);
assertEq(f(1), 0);
wasmFailValidateText(`(module (func (param i32) (result i32) (i32.add (i32.const 1) (block i32 (if i32 (get_local 0) (br 0 (i32.const 99))) (i32.const -1)))) (export "" 0))`, /if without else with a result value/);
var f = wasmEvalText(`(module (func (param i32) (result i32) (i32.add (i32.const 1) (block i32 (if (get_local 0) (br 1 (i32.const 99))) (i32.const -1)))) (export "" 0))`).exports[""];
assertEq(f(0), 0);
assertEq(f(1), 100);
wasmFailValidateText(`(module (func (param i32) (result i32) (i32.add (i32.const 1) (block (br_if 0 (i32.const 99) (get_local 0)) (i32.const -1)))) (export "" 0))`, /unused values not explicitly dropped by end of block/);
var f = wasmEvalText(`(module (func (param i32) (result i32) (i32.add (i32.const 1) (block i32 (drop (br_if 0 (i32.const 99) (get_local 0))) (i32.const -1)))) (export "" 0))`).exports[""];
assertEq(f(0), 0);
assertEq(f(1), 100);
wasmFullPass(`(module (func (result i32) (block i32 (br 0 (return (i32.const 42))) (i32.const 0))) (export "run" 0))`, 42);
wasmFullPass(`(module (func (result i32) (block i32 (return (br 0 (i32.const 42))))) (export "run" 0))`, 42);
wasmFullPass(`(module (func (result i32) (block i32 (return (br 0 (i32.const 42))) (i32.const 0))) (export "run" 0))`, 42);
wasmFullPass(`(module (func (result f32) (drop (block i32 (br 0 (i32.const 0)))) (block f32 (br 0 (f32.const 42)))) (export "run" 0))`, 42);
var called = 0;
var imports = {
sideEffects: {
ifTrue(x) {assertEq(x, 13); called++;},
ifFalse(x) {assertEq(x, 37); called--;}
}
}
var f = wasmEvalText(`(module
(import "sideEffects" "ifTrue" (param i32))
(import "sideEffects" "ifFalse" (param i32))
(func
(param i32) (result i32)
(block $outer
(if
(get_local 0)
(block (call 0 (i32.const 13)) (br $outer))
)
(if
(i32.eqz (get_local 0))
(block (call 1 (i32.const 37)) (br $outer))
)
)
(i32.const 42)
)
(export "" 2))`, imports).exports[""];
assertEq(f(0), 42);
assertEq(called, -1);
assertEq(f(1), 42);
assertEq(called, 0);
// br/br_if and loop
wasmFullPass(`(module (func (param i32) (result i32) (loop $out $in i32 (br $out (get_local 0)))) (export "run" 0))`, 1, {}, 1);
wasmFullPass(`(module (func (param i32) (result i32) (loop $in (br 1 (get_local 0)))) (export "run" 0))`, 1, {}, 1);
wasmFullPass(`(module (func (param i32) (result i32) (block $out i32 (loop $in i32 (br $out (get_local 0))))) (export "run" 0))`, 1, {}, 1);
wasmFailValidateText(`(module (func (param i32) (result i32)
(loop $out $in
(if (get_local 0) (br $in (i32.const 1)))
(if (get_local 0) (br $in (f32.const 2)))
(if (get_local 0) (br $in (f64.const 3)))
(if (get_local 0) (br $in))
(i32.const 7)
)
) (export "" 0))`, /unused values not explicitly dropped by end of block/);
wasmFullPass(`(module
(func
(result i32)
(local i32)
(block $out i32
(loop $in
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(if (i32.ge_s (get_local 0) (i32.const 7)) (br $out (get_local 0)))
(br $in)
)
)
)
(export "run" 0))`, 7);
wasmFullPass(`(module
(func
(result i32)
(local i32)
(block $out i32
(loop $in
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br_if $out (get_local 0) (i32.ge_s (get_local 0) (i32.const 7)))
(br $in)
)
)
)
(export "run" 0))`, 7);
// ----------------------------------------------------------------------------
// loop
wasmFailValidateText('(module (func (loop (br 2))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (result i32) (drop (loop (i32.const 2))) (i32.const 1)) (export "" 0))', /unused values not explicitly dropped by end of block/);
wasmFullPass('(module (func (loop)) (export "run" 0))', undefined);
wasmFullPass('(module (func (result i32) (loop (drop (i32.const 2))) (i32.const 1)) (export "run" 0))', 1);
wasmFullPass('(module (func (loop (br 1))) (export "run" 0))', undefined);
wasmFullPass('(module (func (loop $a (br 1))) (export "run" 0))', undefined);
wasmFullPass('(module (func (loop $a (br_if $a (i32.const 0)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (loop $a $b (br $a))) (export "run" 0))', undefined);
wasmFullPass('(module (func (block $a (loop $b (br $a)))) (export "run" 0))', undefined);
wasmFullPass('(module (func (result i32) (loop i32 (i32.const 1))) (export "run" 0))', 1);
wasmFullPass(`(module (func (result i32) (local i32)
(loop
$break $continue
(if
(i32.gt_u (get_local 0) (i32.const 5))
(br $break)
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br $continue)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(block
$break
(loop
$continue
(if
(i32.gt_u (get_local 0) (i32.const 5))
(br $break)
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br $continue)
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(loop
$break $continue
(br_if
$break
(i32.gt_u (get_local 0) (i32.const 5))
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br $continue)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(block
$break
(loop
$continue
(br_if
$break
(i32.gt_u (get_local 0) (i32.const 5))
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br $continue)
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(loop
$break $continue
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br_if
$continue
(i32.le_u (get_local 0) (i32.const 5))
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(block
$break
(loop
$continue
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(br_if
$continue
(i32.le_u (get_local 0) (i32.const 5))
)
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(loop
$break $continue
(br_if
$break
(i32.gt_u (get_local 0) (i32.const 5))
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(loop
(br $continue)
)
(return (i32.const 42))
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(block
$break
(loop
$continue
(br_if
$break
(i32.gt_u (get_local 0) (i32.const 5))
)
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(loop
(br $continue)
)
(return (i32.const 42))
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(loop
$break $continue
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(loop
(br_if
$continue
(i32.le_u (get_local 0) (i32.const 5))
)
)
(br $break)
)
(return (get_local 0))
) (export "run" 0))`, 6);
wasmFullPass(`(module (func (result i32) (local i32)
(block
$break
(loop
$continue
(set_local 0 (i32.add (get_local 0) (i32.const 1)))
(loop
(br_if
$continue
(i32.le_u (get_local 0) (i32.const 5))
)
)
(br $break)
)
)
(return (get_local 0))
) (export "run" 0))`, 6);
// ----------------------------------------------------------------------------
// br_table
wasmFailValidateText('(module (func (br_table 1 (i32.const 0))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (br_table 1 0 (i32.const 0))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (br_table 0 1 (i32.const 0))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (block (br_table 2 0 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (block (br_table 0 2 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (block (br_table 0 (f32.const 0)))))', mismatchError("f32", "i32"));
wasmFailValidateText('(module (func (loop (br_table 2 0 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (loop (br_table 0 2 (i32.const 0)))))', DEPTH_OUT_OF_BOUNDS);
wasmFailValidateText('(module (func (loop (br_table 0 (f32.const 0)))))', mismatchError("f32", "i32"));
wasmFullPass(`(module (func (result i32) (param i32)
(block $default
(br_table $default (get_local 0))
(return (i32.const 0))
)
(return (i32.const 1))
) (export "run" 0))`, 1);
wasmFullPass(`(module (func (result i32) (param i32)
(block $default
(br_table $default (return (i32.const 1)))
(return (i32.const 0))
)
(return (i32.const 2))
) (export "run" 0))`, 1);
wasmFullPass(`(module (func (result i32) (param i32)
(block $outer
(block $inner
(br_table $inner (get_local 0))
(return (i32.const 0))
)
(return (i32.const 1))
)
(return (i32.const 2))
) (export "run" 0))`, 1);
var f = wasmEvalText(`(module (func (result i32) (param i32)
(block $0
(block $1
(block $2
(block $default
(br_table $0 $1 $2 $default (get_local 0))
)
(return (i32.const -1))
)
(return (i32.const 2))
)
)
(return (i32.const 0))
) (export "" 0))`).exports[""];
assertEq(f(-2), -1);
assertEq(f(-1), -1);
assertEq(f(0), 0);
assertEq(f(1), 0);
assertEq(f(2), 2);
assertEq(f(3), -1);
// br_table with values
wasmFailValidateText('(module (func (result i32) (block (br_table 0 (i32.const 0)))))', mismatchError("void", "i32"));
wasmFailValidateText('(module (func (result i32) (block i32 (br_table 0 (f32.const 0) (i32.const 0)))))', mismatchError("f32", "i32"));
wasmFailValidateText(`(module
(func
(result i32)
(block $outer f32
(block $inner f32
(br_table $outer $inner (f32.const 13.37) (i32.const 1))
)
(br $outer (i32.const 42))
)
)
(export "" 0))`, mismatchError("i32", "f32"));
wasmFullPass(`(module (func (result i32) (block $default i32 (br_table $default (i32.const 42) (i32.const 1)))) (export "run" 0))`, 42);
var f = wasmEvalText(`(module (func (param i32) (result i32)
(i32.add
(block $1 i32
(drop (block $0 i32
(drop (block $default i32
(br_table $0 $1 $default (get_local 0) (get_local 0))
))
(tee_local 0 (i32.mul (i32.const 2) (get_local 0)))
))
(tee_local 0 (i32.add (i32.const 4) (get_local 0)))
)
(i32.const 1)
)
) (export "" 0))`).exports[""];
assertEq(f(0), 5);
assertEq(f(1), 2);
assertEq(f(2), 9);
assertEq(f(3), 11);
assertEq(f(4), 13);
// ----------------------------------------------------------------------------
// unreachable
const UNREACHABLE = /unreachable/;
assertErrorMessage(wasmEvalText(`(module (func (unreachable)) (export "" 0))`).exports[""], RuntimeError, UNREACHABLE);
assertErrorMessage(wasmEvalText(`(module (func (if (unreachable) (i32.const 0))) (export "" 0))`).exports[""], RuntimeError, UNREACHABLE);
assertErrorMessage(wasmEvalText(`(module (func (block (br_if 0 (unreachable)))) (export "" 0))`).exports[""], RuntimeError, UNREACHABLE);
assertErrorMessage(wasmEvalText(`(module (func (block (br_table 0 (unreachable)))) (export "" 0))`).exports[""], RuntimeError, UNREACHABLE);
assertErrorMessage(wasmEvalText(`(module (func (result i32) (i32.add (i32.const 0) (unreachable))) (export "" 0))`).exports[""], RuntimeError, UNREACHABLE);
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