crypto-emscripten/notes.txt at master · mnaamani/crypto-emscripten · GitHub

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Optimisation notes..

for nodejs and firefox:
-O2 --llvm-opts 1 --llvm-lto 0
    For best performance with ciphers and ECC
-O2 --llvm-opts 1 --llvm-lto 0  -s ASM_JS=1
    same performance (except for SERPENT .. investigate)

Browsers.. all using --llvm-opts 1 --llvm-lto 0

-O2 --closure 1 -s ASM_JS=1   (works for all browsers...)
-O2 --closure 0 -s ASM_JS=1   (works for all browsers...)

-O2 --closure 0 -s ASM_JS=0   (works for all browsers...)

-O1 --closure 0 -s ASM_JS=0 works.. slow
-O1 --closure 0 -s ASM_JS=1 works.. slow
-O1 --closure 1 -s ASM_JS=1 works...slow

closure without asm.js code hands.. needs investigation
-O2 --closure 1 -s ASM_JS=0
-O1 --closure 1 -s ASM_JS=0