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Bug 1316098 - Optimize out result object allocation for await/return in async function.

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Tag #1287
This commit is contained in:
Gaming4JC 2019-12-13 20:59:32 -05:00 • committed by Roy Tam
commit c9f1fa2cda
10 changed files with 39 additions and 138 deletions
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99
js/src/jit-test/tests/debug/onExceptionUnwind-resumption-async.js
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@ -9,28 +9,6 @@ async function f() {
}
`);
// To continue testing after uncaught exception, remember the exception and
// return normal completeion.
var currentFrame;
var uncaughtException;
dbg.uncaughtExceptionHook = function(e) {
uncaughtException = e;
return {
return: currentFrame.eval("({ done: true, value: 'uncaught' })").return
};
};
function testUncaughtException() {
uncaughtException = undefined;
var val = g.eval(`
var val;
f().then(v => { val = v });
drainJobQueue();
val;
`);
assertEq(val, "uncaught");
assertEq(uncaughtException instanceof TypeError, true);
}
// Just continue
dbg.onExceptionUnwind = function(frame) {
return undefined;
@ -42,83 +20,10 @@ drainJobQueue();
assertEq(exc instanceof ReferenceError, true);
`);
// Should return object.
// Return with resumption value.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: "foo"
};
};
testUncaughtException();
// The object should have `done` property and `value` property.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({})").return
};
};
testUncaughtException();
// The object should have `done` property.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ value: 10 })").return
};
};
testUncaughtException();
// The object should have `value` property.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ done: true })").return
};
};
testUncaughtException();
// `done` property should be a boolean value.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ done: 10, value: 10 })").return
};
};
testUncaughtException();
// `done` property shouldn't be an accessor.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ get done() { return true; }, value: 10 })").return
};
};
testUncaughtException();
// `value` property shouldn't be an accessor.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ done: true, get value() { return 10; } })").return
};
};
testUncaughtException();
// The object shouldn't be a Proxy.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("new Proxy({ done: true, value: 10 }, {})").return
};
};
testUncaughtException();
// Correct resumption value.
dbg.onExceptionUnwind = function(frame) {
currentFrame = frame;
return {
return: frame.eval("({ done: true, value: 10 })").return
return: 10
};
};
var val = g.eval(`