(ANDconst [c] (MOVDconst [d]))  => (MOVDconst [c&d])
(ANDconst [c] (ANDconst [d] x)) => (ANDconst [c&d] x)
(ANDconst [c] (MOVWUreg x)) => (ANDconst [c&(1<<32-1)] x)
(ANDconst [c] (MOVHUreg x)) => (ANDconst [c&(1<<16-1)] x)
(ANDconst [c] (MOVBUreg x)) => (ANDconst [c&(1<<8-1)] x)
(MOVWUreg (ANDconst [c] x)) => (ANDconst [c&(1<<32-1)] x)
(MOVHUreg (ANDconst [c] x)) => (ANDconst [c&(1<<16-1)] x)

(MOVHUreg x:(MOVHUload _ _)) => (MOVWreg x)

// fold extensions and ANDs together
(MOVBUreg (ANDconst [c] x)) => (ANDconst [c&0xff] x)
(MOVHUreg (ANDconst [c] x)) => (ANDconst [c&0xffff] x)
(MOVBreg (ANDconst [c] x)) && c & 0x80 == 0 => (ANDconst [c&0x7f] x)
(MOVHreg (ANDconst [c] x)) && c & 0x8000 == 0 => (ANDconst [c&0x7fff] x)

// fold double extensions
(MOVBreg x:(MOVBreg _)) => (MOVWreg x)

cui fliter <******@****.***> 1697288956 +0800

(SUBconst [c] x) && !isARM64addcon(c)  => (SUB x (MOVDconst [c]))
(ANDconst [c] x) && !isARM64bitcon(uint64(c)) => (AND x (MOVDconst [c]))
(ORconst  [c] x) && !isARM64bitcon(uint64(c))  => (OR  x (MOVDconst [c]))
(XORconst [c] x) && !isARM64bitcon(uint64(c))  => (XOR x (MOVDconst [c]))
(TSTconst [c] x) && !isARM64bitcon(uint64(c))  => (TST x (MOVDconst [c]))

			p.Pos = v.Pos
		}

	case ssa.OpWasmLoweredMove:
		getValue32(s, v.Args[0])
		getValue32(s, v.Args[1])
		i32Const(s, int32(v.AuxInt))
		s.Prog(wasm.AMemoryCopy)

	case ssa.OpWasmLoweredZero:
		getValue32(s, v.Args[0])
		i32Const(s, 0)
		i32Const(s, int32(v.AuxInt))
		s.Prog(wasm.AMemoryFill)

	case ssa.OpWasmLoweredNilCheck:
		getValue64(s, v.Args[0])
		s.Prog(wasm.AI64Eqz)

(I64Eq  (I64Const [x]) (I64Const [y])) && x == y => (I64Const [1])
(I64Eq  (I64Const [x]) (I64Const [y])) && x != y => (I64Const [0])
(I64Ne  (I64Const [x]) (I64Const [y])) && x == y => (I64Const [0])
(I64Ne  (I64Const [x]) (I64Const [y])) && x != y => (I64Const [1])

(I64Shl (I64Const [x]) (I64Const [y])) => (I64Const [x << uint64(y)])
(I64ShrU (I64Const [x]) (I64Const [y])) => (I64Const [int64(uint64(x) >> uint64(y))])

	}
	newList := make([]ir.Node, 0, need)
	for i := 0; i < len(s); i++ {
		if ir.IsConst(s[i], constant.String) && i+1 < len(s) && ir.IsConst(s[i+1], constant.String) {
			// merge from i up to but not including i2
			var strs []string
			i2 := i
			for i2 < len(s) && ir.IsConst(s[i2], constant.String) {
				strs = append(strs, ir.StringVal(s[i2]))
				i2++
			}

#include "textflag.h"

TEXT runtime·wasmDiv(SB), NOSPLIT, $0-0
	Get R0
	I64Const $-0x8000000000000000
	I64Eq
	If
		Get R1
		I64Const $-1
		I64Eq
		If
			I64Const $-0x8000000000000000
			Return
		End
	End
	Get R0
	Get R1
	I64DivS
	Return

TEXT runtime·wasmTruncS(SB), NOSPLIT, $0-0
	Get R0
	Get R0
	F64Ne // NaN
	If
		I64Const $0x8000000000000000
		Return
	End

	Get R0

#include "go_asm.h"
#include "textflag.h"

// _rt0_wasm_js is not used itself. It only exists to mark the exported functions as alive.
TEXT _rt0_wasm_js(SB),NOSPLIT,$0
	I32Const $wasm_export_run(SB)
	Drop
	I32Const $wasm_export_resume(SB)
	Drop
	I32Const $wasm_export_getsp(SB)
	Drop

// wasm_export_run gets called from JavaScript. It initializes the Go runtime and executes Go code until it needs

	//  wasm:`I64Const\t\$12592`,`I64Store16\t\$0`,`I64Const\t\$50`,`I64Store8\t\$2`
	// mips64:`MOVV\t\$48`,`MOVV\t\$49`,`MOVV\t\$50`
	bsink = []byte("012")

	// 858927408 = 0x33323130
	//     13620 = 0x3534
	// amd64:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
	//   386:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
	// arm64:`MOVD\t\$858927408`,`MOVD\t\$13620`