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minimise reduce_vars cloning overhead (#2148)

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Alex Lam S.L
2017-06-23 06:59:53 +08:00
committed by GitHub
parent 3d5bc08185
commit b3a57ff019
1 changed files with 2 additions and 2 deletions
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4
lib/compress.js
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@@ -3887,7 +3887,7 @@ merge(Compressor.prototype, {
var d = self.definition(); var d = self.definition();
var fixed = self.fixed_value(); var fixed = self.fixed_value();
if (fixed instanceof AST_Defun) { if (fixed instanceof AST_Defun) {
d.fixed = fixed = make_node(AST_Function, fixed, fixed).clone(true); d.fixed = fixed = make_node(AST_Function, fixed, fixed);
} }
if (compressor.option("unused") if (compressor.option("unused")
&& fixed instanceof AST_Function && fixed instanceof AST_Function
@@ -3895,7 +3895,7 @@ merge(Compressor.prototype, {
&& !(d.scope.uses_arguments && d.orig[0] instanceof AST_SymbolFunarg) && !(d.scope.uses_arguments && d.orig[0] instanceof AST_SymbolFunarg)
&& !d.scope.uses_eval && !d.scope.uses_eval
&& compressor.find_parent(AST_Scope) === fixed.parent_scope) { && compressor.find_parent(AST_Scope) === fixed.parent_scope) {
return fixed; return fixed.clone(true);
} }
if (compressor.option("evaluate") && fixed) { if (compressor.option("evaluate") && fixed) {
if (d.should_replace === undefined) { if (d.should_replace === undefined) {