JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

inline single-use function across loop (#2594)

Browse Source
This commit is contained in:
Alex Lam S.L 2017-12-14 19:24:54 +08:00 committed by GitHub
parent 3f18a61532
commit 90313875f7
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 80 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/compress.js
View File

@ -3862,12 +3862,15 @@ merge(Compressor.prototype, {
}
}
if (fn instanceof AST_Function) {
var def;
if (compressor.option("inline")
&& exp === fn
&& !fn.name
&& !fn.uses_arguments
&& !fn.uses_eval
&& fn.body.length == 1
&& (exp === fn ? !fn.name
: compressor.option("unused")
&& (def = exp.definition()).references.length == 1
&& !recursive_ref(compressor, def))
&& !fn.contains_this()
&& all(fn.argnames, function(arg) {
return arg.__unused;

75
test/compress/functions.js
View File

@ -672,3 +672,78 @@ empty_body: {
}
}
}
inline_loop_1: {
options = {
inline: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f() {
return x();
}
for (;;) f();
}
expect: {
for (;;) x();
}
}
inline_loop_2: {
options = {
inline: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
for (;;) f();
function f() {
return x();
}
}
expect: {
for (;;) x();
}
}
inline_loop_3: {
options = {
inline: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var f = function() {
return x();
};
for (;;) f();
}
expect: {
for (;;) x();
}
}
inline_loop_4: {
options = {
inline: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
for (;;) f();
var f = function() {
return x();
};
}
expect: {
for (;;) f();
var f = function() {
return x();
};
}
}