eliminate loop helper variables
better erroring in SDL_Delay; issue #1255
track number of uses properly for loop variable removal
Make lrint more correct. Closes #1265.
add missing return values in safeRequestAnimationFrame,safeSetTimeout,safeSetInterval
handle empty loops in new loop optimizations; fixes #1270
optimize multiple loop variables together
allow building only in test runner
properly simplify not comps in loop suffixes and elsewhere
remove unneeded check
optimize out double not
remove break labels more aggresively, with a refined natural flow analysis
fix multiplications in setjmp code
lua comment
fix crunch path
ignore tempDoublePtr operations, they do not really alias memory
refactor to potentially enable shadow flip on 32-bit values
optimize some HEAP32 expressions, including some unnecessary bitcasts through tempDoublePtr
eliminate bitcasts of immediately loaded values
improve tempDoublePtr elimination and only run analysis when necessary