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drop assignment in AST_VarDef.value (#2522)

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fixes #2516
This commit is contained in:
Alex Lam S.L
2017-11-28 13:08:40 +08:00
committed by GitHub
parent b37a68c84f
commit ecc9f6b770
3 changed files with 118 additions and 37 deletions
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16
test/compress/collapse_vars.js
View File

@@ -705,7 +705,7 @@ collapse_vars_lvalues_drop_assign: {
function f2(x) { var z = x, a = ++z; return z += a; }
function f3(x) { var a = (x -= 3); return x + a; }
function f4(x) { var a = (x -= 3); return x + a; }
function f5(x) { e1(); var v = e2(), c = v = --x; return x - c; }
function f5(x) { e1(), e2(); var c = --x; return x - c; }
function f6(x) { e1(), e2(); return --x - x; }
function f7(x) { e1(); return x - (e2() - x); }
function f8(x) { e1(); return x - (e2() - x); }
@@ -2386,6 +2386,7 @@ duplicate_argname: {
issue_2298: {
options = {
collapse_vars: true,
passes: 2,
reduce_funcs: true,
reduce_vars: true,
unused: true,
@@ -3087,13 +3088,14 @@ issue_2437: {
}
expect: {
!function() {
if (xhrDesc)
return result = !!(req = new XMLHttpRequest()).onreadystatechange,
Object.defineProperty(XMLHttpRequest.prototype, "onreadystatechange", xhrDesc || {}),
if (xhrDesc) {
var result = !!(req = new XMLHttpRequest()).onreadystatechange;
return Object.defineProperty(XMLHttpRequest.prototype, "onreadystatechange", xhrDesc || {}),
result;
}
var req = new XMLHttpRequest(), detectFunc = function() {};
req.onreadystatechange = detectFunc;
var result = req[SYMBOL_FAKE_ONREADYSTATECHANGE_1] === detectFunc;
req.onreadystatechange = detectFunc,
result = req[SYMBOL_FAKE_ONREADYSTATECHANGE_1] === detectFunc,
req.onreadystatechange = null;
}();
}
@@ -3522,6 +3524,7 @@ issue_2436_12: {
issue_2436_13: {
options = {
collapse_vars: true,
passes: 2,
reduce_vars: true,
unused: true,
}
@@ -3622,6 +3625,7 @@ issue_2497: {
issue_2506: {
options = {
collapse_vars: true,
passes: 2,
reduce_vars: true,
unused: true,
}

80
test/compress/drop-unused.js
View File

@@ -1299,3 +1299,83 @@ issue_2288: {
}
}
}
issue_2516_1: {
options = {
collapse_vars: true,
reduce_funcs: true,
reduce_vars: true,
unused: true,
}
input: {
function foo() {
function qux(x) {
bar.call(null, x);
}
function bar(x) {
var FOUR = 4;
var trouble = x || never_called();
var value = (FOUR - 1) * trouble;
console.log(value == 6 ? "PASS" : value);
}
Baz = qux;
}
var Baz;
foo();
Baz(2);
}
expect: {
function foo() {
Baz = function(x) {
(function(x) {
var trouble = x || never_called();
var value = (4 - 1) * trouble;
console.log(6 == value ? "PASS" : value);
}).call(null, x);
};
}
var Baz;
foo();
Baz(2);
}
}
issue_2516_2: {
options = {
collapse_vars: true,
reduce_funcs: true,
reduce_vars: true,
passes: 2,
unused: true,
}
input: {
function foo() {
function qux(x) {
bar.call(null, x);
}
function bar(x) {
var FOUR = 4;
var trouble = x || never_called();
var value = (FOUR - 1) * trouble;
console.log(value == 6 ? "PASS" : value);
}
Baz = qux;
}
var Baz;
foo();
Baz(2);
}
expect: {
function foo() {
Baz = function(x) {
(function(x) {
var value = (4 - 1) * (x || never_called());
console.log(6 == value ? "PASS" : value);
}).call(null, x);
};
}
var Baz;
foo();
Baz(2);
}
}