Memory instruction	opcode
v128.load	0x00
v128.load8x8_s	0x01
v128.load8x8_u	0x02
v128.load16x4_s	0x03
v128.load16x4_u	0x04
v128.load32x2_s	0x05
v128.load32x2_u	0x06
v128.load8_splat	0x07
v128.load16_splat	0x08
v128.load32_splat	0x09
v128.load64_splat	0x0a
v128.store	0x0b

Basic operation	opcode
v128.const	0x0c
i8x16.shuffle	0x0d
i8x16.swizzle	0x0e

Splat operation	opcode
i8x16.splat	0x0f
i16x8.splat	0x10
i32x4.splat	0x11
i64x2.splat	0x12
f32x4.splat	0x13
f64x2.splat	0x14

Lane operation	opcode
i8x16.extract_lane_s	0x15
i8x16.extract_lane_u	0x16
i8x16.replace_lane	0x17
i16x8.extract_lane_s	0x18
i16x8.extract_lane_u	0x19
i16x8.replace_lane	0x1a
i32x4.extract_lane	0x1b
i32x4.replace_lane	0x1c
i64x2.extract_lane	0x1d
i64x2.replace_lane	0x1e
f32x4.extract_lane	0x1f
f32x4.replace_lane	0x20
f64x2.extract_lane	0x21
f64x2.replace_lane	0x22

i8x16 Cmp	opcode	i16x8 Cmp	opcode	i32x4 Cmp	opcode
i8x16.eq	0x23	i16x8.eq	0x2d	i32x4.eq	0x37
i8x16.ne	0x24	i16x8.ne	0x2e	i32x4.ne	0x38
i8x16.lt_s	0x25	i16x8.lt_s	0x2f	i32x4.lt_s	0x39
i8x16.lt_u	0x26	i16x8.lt_u	0x30	i32x4.lt_u	0x3a
i8x16.gt_s	0x27	i16x8.gt_s	0x31	i32x4.gt_s	0x3b
i8x16.gt_u	0x28	i16x8.gt_u	0x32	i32x4.gt_u	0x3c
i8x16.le_s	0x29	i16x8.le_s	0x33	i32x4.le_s	0x3d
i8x16.le_u	0x2a	i16x8.le_u	0x34	i32x4.le_u	0x3e
i8x16.ge_s	0x2b	i16x8.ge_s	0x35	i32x4.ge_s	0x3f
i8x16.ge_u	0x2c	i16x8.ge_u	0x36	i32x4.ge_u	0x40

f32x4 Cmp	opcode	f64x2 Cmp	opcode
f32x4.eq	0x41	f64x2.eq	0x47
f32x4.ne	0x42	f64x2.ne	0x48
f32x4.lt	0x43	f64x2.lt	0x49
f32x4.gt	0x44	f64x2.gt	0x4a
f32x4.le	0x45	f64x2.le	0x4b
f32x4.ge	0x46	f64x2.ge	0x4c

v128 Op	opcode
v128.not	0x4d
v128.and	0x4e
v128.andnot	0x4f
v128.or	0x50
v128.xor	0x51
v128.bitselect	0x52
v128.any_true	0x53

Load Lane Op	opcode
v128.load8_lane	0x54
v128.load16_lane	0x55
v128.load32_lane	0x56
v128.load64_lane	0x57
v128.store8_lane	0x58
v128.store16_lane	0x59
v128.store32_lane	0x5a
v128.store64_lane	0x5b
v128.load32_zero	0x5c
v128.load64_zero	0x5d

Float conversion	opcode
f32x4.demote_f64x2_zero	0x5e
f64x2.promote_low_f32x4	0x5f

i8x16 Op	opcode	i16x8 Op	opcode	i32x4 Op	opcode	i64x2 Op	opcode
i8x16.abs	0x60	i16x8.abs	0x80	i32x4.abs	0xa0	i64x2.abs	0xc0
i8x16.neg	0x61	i16x8.neg	0x81	i32x4.neg	0xa1	i64x2.neg	0xc1
i8x16.popcnt	0x62	i16x8.q15mulr_sat_s	0x82		0xa2	-------------	0xc2
i8x16.all_true	0x63	i16x8.all_true	0x83	i32x4.all_true	0xa3	i64x2.all_true	0xc3
i8x16.bitmask	0x64	i16x8.bitmask	0x84	i32x4.bitmask	0xa4	i64x2.bitmask	0xc4
i8x16.narrow_i16x8_s	0x65	i16x8.narrow_i32x4_s	0x85	---- narrow ----	0xa5	-------------	0xc5
i8x16.narrow_i16x8_u	0x66	i16x8.narrow_i32x4_u	0x86	---- narrow ----	0xa6	-------------	0xc6
f32x4.ceil	0x67	i16x8.extend_low_i8x16_s	0x87	i32x4.extend_low_i16x8_s	0xa7	i64x2.extend_low_i32x4_s	0xc7
f32x4.floor	0x68	i16x8.extend_high_i8x16_s	0x88	i32x4.extend_high_i16x8_s	0xa8	i64x2.extend_high_i32x4_s	0xc8
f32x4.trunc	0x69	i16x8.extend_low_i8x16_u	0x89	i32x4.extend_low_i16x8_u	0xa9	i64x2.extend_low_i32x4_u	0xc9
f32x4.nearest	0x6a	i16x8.extend_high_i8x16_u	0x8a	i32x4.extend_high_i16x8_u	0xaa	i64x2.extend_high_i32x4_u	0xca
i8x16.shl	0x6b	i16x8.shl	0x8b	i32x4.shl	0xab	i64x2.shl	0xcb
i8x16.shr_s	0x6c	i16x8.shr_s	0x8c	i32x4.shr_s	0xac	i64x2.shr_s	0xcc
i8x16.shr_u	0x6d	i16x8.shr_u	0x8d	i32x4.shr_u	0xad	i64x2.shr_u	0xcd
i8x16.add	0x6e	i16x8.add	0x8e	i32x4.add	0xae	i64x2.add	0xce
i8x16.add_sat_s	0x6f	i16x8.add_sat_s	0x8f	---- add_sat ----	0xaf	-------------	0xcf
i8x16.add_sat_u	0x70	i16x8.add_sat_u	0x90	---- add_sat ----	0xb0	-------------	0xd0
i8x16.sub	0x71	i16x8.sub	0x91	i32x4.sub	0xb1	i64x2.sub	0xd1
i8x16.sub_sat_s	0x72	i16x8.sub_sat_s	0x92	---- sub_sat ----	0xb2	-------------	0xd2
i8x16.sub_sat_u	0x73	i16x8.sub_sat_u	0x93	---- sub_sat ----	0xb3	-------------	0xd3
f64x2.ceil	0x74	f64x2.nearest	0x94	-------------	0xb4	-------------	0xd4
f64x2.floor	0x75	i16x8.mul	0x95	i32x4.mul	0xb5	i64x2.mul	0xd5
i8x16.min_s	0x76	i16x8.min_s	0x96	i32x4.min_s	0xb6	i64x2.eq	0xd6
i8x16.min_u	0x77	i16x8.min_u	0x97	i32x4.min_u	0xb7	i64x2.ne	0xd7
i8x16.max_s	0x78	i16x8.max_s	0x98	i32x4.max_s	0xb8	i64x2.lt_s	0xd8
i8x16.max_u	0x79	i16x8.max_u	0x99	i32x4.max_u	0xb9	i64x2.gt_s	0xd9
f64x2.trunc	0x7a		0x9a	i32x4.dot_i16x8_s	0xba	i64x2.le_s	0xda
i8x16.avgr_u	0x7b	i16x8.avgr_u	0x9b	---- avgr_u ----	0xbb	i64x2.ge_s	0xdb
i16x8.extadd_pairwise_i8x16_s	0x7c	i16x8.extmul_low_i8x16_s	0x9c	i32x4.extmul_low_i16x8_s	0xbc	i64x2.extmul_low_i32x4_s	0xdc
i16x8.extadd_pairwise_i8x16_u	0x7d	i16x8.extmul_high_i8x16_s	0x9d	i32x4.extmul_high_i16x8_s	0xbd	i64x2.extmul_high_i32x4_s	0xdd
i32x4.extadd_pairwise_i16x8_s	0x7e	i16x8.extmul_low_i8x16_u	0x9e	i32x4.extmul_low_i16x8_u	0xbe	i64x2.extmul_low_i32x4_u	0xde
i32x4.extadd_pairwise_i16x8_u	0x7f	i16x8.extmul_high_i8x16_u	0x9f	i32x4.extmul_high_i16x8_u	0xbf	i64x2.extmul_high_i32x4_u	0xdf

f32x4 Op	opcode	f64x2 Op	opcode
f32x4.abs	0xe0	f64x2.abs	0xec
f32x4.neg	0xe1	f64x2.neg	0xed
---- round ----	0xe2	---- round ----	0xee
f32x4.sqrt	0xe3	f64x2.sqrt	0xef
f32x4.add	0xe4	f64x2.add	0xf0
f32x4.sub	0xe5	f64x2.sub	0xf1
f32x4.mul	0xe6	f64x2.mul	0xf2
f32x4.div	0xe7	f64x2.div	0xf3
f32x4.min	0xe8	f64x2.min	0xf4
f32x4.max	0xe9	f64x2.max	0xf5
f32x4.pmin	0xea	f64x2.pmin	0xf6
f32x4.pmax	0xeb	f64x2.pmax	0xf7

Conversion Op	opcode
i32x4.trunc_sat_f32x4_s	0xf8
i32x4.trunc_sat_f32x4_u	0xf9
f32x4.convert_i32x4_s	0xfa
f32x4.convert_i32x4_u	0xfb
i32x4.trunc_sat_f64x2_s_zero	0xfc
i32x4.trunc_sat_f64x2_u_zero	0xfd
f64x2.convert_low_i32x4_s	0xfe
f64x2.convert_low_i32x4_u	0xff