(Copysign ...) => (F64Copysign ...)

(Sqrt32 ...) => (F32Sqrt ...)

(Ctz64 ...) => (I64Ctz ...)
(Ctz32 x) => (I64Ctz (I64Or x (I64Const [0x100000000])))
(Ctz16 x) => (I64Ctz (I64Or x (I64Const [0x10000])))
(Ctz8  x) => (I64Ctz (I64Or x (I64Const [0x100])))

(Ctz(64|32|16|8)NonZero ...) => (I64Ctz ...)

(BitLen64 x) => (I64Sub (I64Const [64]) (I64Clz x))

(PopCount64 ...) => (I64Popcnt ...)

	{name: "Neg64F", argLength: 1},

	{name: "Com8", argLength: 1}, // ^arg0
	{name: "Com16", argLength: 1},
	{name: "Com32", argLength: 1},
	{name: "Com64", argLength: 1},

	{name: "Ctz8", argLength: 1},         // Count trailing (low order) zeroes (returns 0-8)
	{name: "Ctz16", argLength: 1},        // Count trailing (low order) zeroes (returns 0-16)

(Ctz8  (Const8  [c])) && config.PtrSize == 4 => (Const32 [int32(ntz8(c))])

(Ctz64 (Const64 [c])) && config.PtrSize == 8 => (Const64 [int64(ntz64(c))])
(Ctz32 (Const32 [c])) && config.PtrSize == 8 => (Const64 [int64(ntz32(c))])
(Ctz16 (Const16 [c])) && config.PtrSize == 8 => (Const64 [int64(ntz16(c))])
(Ctz8  (Const8  [c])) && config.PtrSize == 8 => (Const64 [int64(ntz8(c))])

(Ctz16 <t> x) && buildcfg.GOARM.Version<=6 =>
	(RSBconst [32] (CLZ <t> (SUBconst <typ.UInt32> (AND <typ.UInt32> (ORconst <typ.UInt32> [0x10000] x) (RSBconst <typ.UInt32> [0] (ORconst <typ.UInt32> [0x10000] x))) [1])))
(Ctz8 <t> x) && buildcfg.GOARM.Version<=6 =>
	(RSBconst [32] (CLZ <t> (SUBconst <typ.UInt32> (AND <typ.UInt32> (ORconst <typ.UInt32> [0x100] x) (RSBconst <typ.UInt32> [0] (ORconst <typ.UInt32> [0x100] x))) [1])))

(Ctz32 x) && buildcfg.GOPPC64<=8 => (POPCNTW (MOVWZreg (ANDN <typ.Int> (ADDconst <typ.Int> [-1] x) x)))
(Ctz32 x) => (CNTTZW (MOVWZreg x))
(Ctz16 x) => (POPCNTW (MOVHZreg (ANDN <typ.Int16> (ADDconst <typ.Int16> [-1] x) x)))
(Ctz8 x)  => (POPCNTB (MOVBZreg (ANDN <typ.UInt8> (ADDconst <typ.UInt8> [-1] x) x)))

(BitLen64 x) => (SUBFCconst [64] (CNTLZD <typ.Int> x))
(BitLen32 x) => (SUBFCconst [32] (CNTLZW <typ.Int> x))

// license that can be found in the LICENSE file.

// Code generated by go run make_tables.go. DO NOT EDIT.

package bits

`)

func main() {
	buf := bytes.NewBuffer(header)

	gen(buf, "ntz8tab", ntz8)
	gen(buf, "pop8tab", pop8)
	gen(buf, "rev8tab", rev8)
	gen(buf, "len8tab", len8)

	out, err := format.Source(buf.Bytes())
	if err != nil {
		log.Fatal(err)
	}

(Ctz32 x)     && buildcfg.GOAMD64 <  3 => (Select0 (BSFQ (BTSQconst <typ.UInt64> [32] x)))
(Ctz16 x) => (BSFL (ORLconst <typ.UInt32> [1<<16] x))
(Ctz8  x) => (BSFL (ORLconst <typ.UInt32> [1<<8 ] x))

(Ctz64NonZero x) && buildcfg.GOAMD64 >= 3 => (TZCNTQ x)
(Ctz32NonZero x) && buildcfg.GOAMD64 >= 3 => (TZCNTL x)
(Ctz16NonZero x) && buildcfg.GOAMD64 >= 3 => (TZCNTL x)

(Ctz(64|32|16|8)NonZero ...) => (Ctz(64|32|32|32) ...)

(Ctz64 <t> x) => (CLZ  (RBIT  <t> x))
(Ctz32 <t> x) => (CLZW (RBITW <t> x))
(Ctz16 <t> x) => (CLZW <t> (RBITW <typ.UInt32> (ORconst <typ.UInt32> [0x10000] x)))
(Ctz8  <t> x) => (CLZW <t> (RBITW <typ.UInt32> (ORconst <typ.UInt32> [0x100] x)))

(PopCount64 <t> x) => (FMOVDfpgp <t> (VUADDLV <typ.Float64> (VCNT <typ.Float64> (FMOVDgpfp <typ.Float64> x))))

		v0.AddArg2(x, v1)
		v.AddArg(v0)
		return true
	}
}
func rewriteValueWasm_OpCtz8(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Ctz8 x)
	// result: (I64Ctz (I64Or x (I64Const [0x100])))
	for {
		x := v_0
		v.reset(OpWasmI64Ctz)
		v0 := b.NewValue0(v.Pos, OpWasmI64Or, typ.Int64)
		v1 := b.NewValue0(v.Pos, OpWasmI64Const, typ.Int64)

		v.AddArg(v0)
		return true
	}
	return false
}
func rewriteValueARM_OpCtz8(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Ctz8 <t> x)
	// cond: buildcfg.GOARM.Version<=6
	// result: (RSBconst [32] (CLZ <t> (SUBconst <typ.UInt32> (AND <typ.UInt32> (ORconst <typ.UInt32> [0x100] x) (RSBconst <typ.UInt32> [0] (ORconst <typ.UInt32> [0x100] x))) [1])))