asm.js

an extraordinarily optimizable, low-level subset of JavaScript, intended to be a compile target from languages like C++.

Spec	http://asmjs.org/spec/latest/
Status	Other

IE	Edge	Firefox	Chrome	Safari	Opera
		57	62 ⁽¹⁾
		56	61 ⁽¹⁾	TP	48 ⁽¹⁾
	16	55	60 ⁽¹⁾	11	47 ⁽¹⁾
11	15	54	59 ⁽¹⁾	10.1	46 ⁽¹⁾
10	14	53	58 ⁽¹⁾	10	45 ⁽¹⁾
9	13	52	57 ⁽¹⁾	9.1	44 ⁽¹⁾
8	12 ⁽²⁾	51	56 ⁽¹⁾	9	43 ⁽¹⁾
Show all
7		50	55 ⁽¹⁾	8	42 ⁽¹⁾
6		49	54 ⁽¹⁾	7.1	41 ⁽¹⁾
5.5		48	53 ⁽¹⁾	7	40 ⁽¹⁾
		47	52 ⁽¹⁾	6.1	39 ⁽¹⁾
		46	51 ⁽¹⁾	6	38 ⁽¹⁾
		45	50 ⁽¹⁾	5.1	37 ⁽¹⁾
		44	49 ⁽¹⁾	5	36 ⁽¹⁾
		43	48 ⁽¹⁾	4	35 ⁽¹⁾
		42	47 ⁽¹⁾	3.2	34 ⁽¹⁾
		41	46 ⁽¹⁾	3.1	33 ⁽¹⁾
		40	45 ⁽¹⁾		32 ⁽¹⁾
		39	44 ⁽¹⁾		31 ⁽¹⁾
		38	43 ⁽¹⁾		30 ⁽¹⁾
		37	42 ⁽¹⁾		29 ⁽¹⁾
		36	41 ⁽¹⁾		28 ⁽¹⁾
		35	40 ⁽¹⁾		27 ⁽¹⁾
		34	39 ⁽¹⁾		26 ⁽¹⁾
		33	38 ⁽¹⁾		25 ⁽¹⁾
		32	37 ⁽¹⁾		24 ⁽¹⁾
		31	36 ⁽¹⁾		23 ⁽¹⁾
		30	35 ⁽¹⁾		22 ⁽¹⁾
		29	34 ⁽¹⁾		21 ⁽¹⁾
		28	33 ⁽¹⁾		20 ⁽¹⁾
		27	32 ⁽¹⁾		19 ⁽¹⁾
		26	31 ⁽¹⁾		18 ⁽¹⁾
		25	30 ⁽¹⁾		17 ⁽¹⁾
		24	29 ⁽¹⁾		16 ⁽¹⁾
		23	28 ⁽¹⁾		15 ⁽¹⁾
		22	27		12.1
		21	26		12
		20	25		11.6
		19	24		11.5
		18	23		11.1
		17	22		11
		16	21		10.6
		15	20		10.5
		14	19		10.0-10.1
		13	18		9.5-9.6
		12	17		9
		11	16
		10	15
		9	14
		8	13
		7	12
		6	11
		5	10
		4	9
		3.6	8
		3.5	7
		3	6
		2	5
			4

Notes

Chrome does not support Ahead-Of-Time compilation but performance doubled in Chrome 28: https://en.wikipedia.org/wiki/Asm.js#Implementations
Supported in MS Edge under the "Enable experimental Javascript features" flag.

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=asmjs