(js_file, wasm_file, expensive_optimizations, debug_info)
| 756 | # minify the final wasm+JS combination. this is done after all the JS |
| 757 | # and wasm optimizations; here we do the very final optimizations on them |
| 758 | def minify_wasm_js(js_file, wasm_file, expensive_optimizations, debug_info): |
| 759 | # start with JSDCE, to clean up obvious JS garbage. When optimizing for size, |
| 760 | # use AJSDCE (aggressive JS DCE, performs multiple iterations). Clean up |
| 761 | # whitespace if necessary too. |
| 762 | passes = [] |
| 763 | if not settings.LINKABLE: |
| 764 | passes.append('JSDCE' if not expensive_optimizations else 'AJSDCE') |
| 765 | # Don't minify if we are going to run closure compiler afterwards |
| 766 | minify = settings.MINIFY_WHITESPACE and not settings.MAYBE_CLOSURE_COMPILER |
| 767 | if minify: |
| 768 | passes.append('--minify-whitespace') |
| 769 | if passes: |
| 770 | logger.debug('running cleanup on shell code: ' + ' '.join(passes)) |
| 771 | js_file = acorn_optimizer(js_file, passes) |
| 772 | # if we can optimize this js+wasm combination under the assumption no one else |
| 773 | # will see the internals, do so |
| 774 | if not settings.LINKABLE: |
| 775 | # if we are optimizing for size, shrink the combined wasm+JS |
| 776 | # TODO: support this when a symbol map is used |
| 777 | if expensive_optimizations: |
| 778 | js_file = metadce(js_file, |
| 779 | wasm_file, |
| 780 | debug_info=debug_info, |
| 781 | last=not settings.MINIFY_WASM_IMPORTS_AND_EXPORTS) |
| 782 | # now that we removed unneeded communication between js and wasm, we can clean up |
| 783 | # the js some more. |
| 784 | passes = ['AJSDCE'] |
| 785 | if minify: |
| 786 | passes.append('--minify-whitespace') |
| 787 | logger.debug('running post-meta-DCE cleanup on shell code: ' + ' '.join(passes)) |
| 788 | js_file = acorn_optimizer(js_file, passes) |
| 789 | if settings.MINIFY_WASM_IMPORTS_AND_EXPORTS: |
| 790 | js_file = minify_wasm_imports_and_exports(js_file, wasm_file, |
| 791 | minify_exports=settings.MINIFY_WASM_EXPORT_NAMES, |
| 792 | debug_info=debug_info) |
| 793 | return js_file |
| 794 | |
| 795 | |
| 796 | # get the flags to pass into the very last binaryen tool invocation, that runs |
nothing calls this directly
no test coverage detected