diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compress.js | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/lib/compress.js b/lib/compress.js index 70bbb7fc..8467f96c 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -2515,7 +2515,7 @@ merge(Compressor.prototype, { self.expression = best_of_expression(expression, self.expression); } if (compressor.option("dead_code")) { - var blocks = Object.create(null); + var prev_block; var decl = []; var body = []; var default_branch; @@ -2542,31 +2542,21 @@ merge(Compressor.prototype, { continue; } } + var case_side_effects = branch instanceof AST_Case && branch.expression.has_side_effects(compressor); if (aborts(branch)) { - var key = make_node(AST_BlockStatement, branch, branch).print_to_string(); - var block; - if (!fallthrough && (block = blocks[key])) { - block.body = []; - body.splice(body.indexOf(block) + 1, 0, branch); - } else { - body.push(branch); - } + var block = make_node(AST_BlockStatement, branch, branch).print_to_string(); + if (!fallthrough && prev_block === block) body[body.length - 1].body = []; + body.push(branch); + prev_block = block; fallthrough = false; } else { body.push(branch); + prev_block = null; fallthrough = true; } - if (branch instanceof AST_Case && branch.expression.has_side_effects(compressor)) - blocks = Object.create(null); - if (!fallthrough) blocks[key] = branch; } for (; i < len && fallthrough; i++) { branch = self.body[i]; - if (branch instanceof AST_Case) { - exact_match.body.push(make_node(AST_SimpleStatement, branch.expression, { - body: branch.expression - })); - } exact_match.body = exact_match.body.concat(branch.body); fallthrough = !aborts(exact_match); } |