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fix reduce_vars on single AST_Defun reference across loop (#2593)

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This commit is contained in:
Alex Lam S.L
2017-12-14 18:47:05 +08:00
committed by GitHub
parent 02a6ce07eb
commit 3f18a61532
2 changed files with 34 additions and 1 deletions
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7
lib/compress.js
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@@ -334,6 +334,11 @@ merge(Compressor.prototype, {
if (node instanceof AST_SymbolRef) {
var d = node.definition();
d.references.push(node);
if (d.references.length == 1
&& !d.fixed
&& d.orig[0] instanceof AST_SymbolDefun) {
loop_ids[d.id] = in_loop;
}
var value;
if (d.fixed === undefined || !safe_to_read(d) || d.single_use == "m") {
d.fixed = false;
@@ -402,9 +407,9 @@ merge(Compressor.prototype, {
d.fixed = false;
} else {
d.fixed = node;
d.single_use = ref_once(d);
loop_ids[d.id] = in_loop;
mark(d, true);
d.single_use = ref_once(d);
}
var save_ids = safe_ids;
safe_ids = Object.create(null);