I've just put the asm.js in that gist directly (after removing the duplicate trailing `}`) through the optimizer registerizeHarder pass (which -Oz should run) and it ends up combining
- q and h - p and f - e and a - b and d You can try this yourself with `./emsdk/emscripten/incoming_64bit_optimizer/optimizer ./couldregisterize.js asm registerizeHarder last`, though the path to your optimizer may be different (possibly under `~/.emscripten_cache`). Unfortunately I can't compile your code because I don't know what a `val` is (and I don't know if you're using any other compiler flags). Aside from that, what version of emscripten are you using? On 24 February 2016 at 23:25, Charles Vaughn <[email protected]> wrote: > Looking at a simple test example disassembly to demonstrate Emscripten, I > noticed a potential optimization opportunity. > > See the gist here: https://gist.github.com/hackcasual/e0262caec12bd60b2fe1 > C++ is in a comment on top, compiled with -Oz > > For example, q and p are pointers allocated on the stack, however as their > lifetimes don't overlap couldn't p be dropped and just q used? Similar to > what the registerization pass does. > > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Aidan Currently co-authoring a book on Docker <http://manning.com/miell/?a_aid=aidanhs&a_bid=e0d48f62> - get 39% off with the code 39miell -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
