// Issue 26438: arm64 backend may use 64-bit TST for
// "if uint32(a)&uint32(b) == 0", which should be
// 32-bit TSTW

package main

//go:noinline
func tstw(a, b uint64) uint64 {
	if uint32(a)&uint32(b) == 0 {
		return 100
	} else {
		return 200
	}
}

func main() {
	if tstw(0xff00000000, 0xaa00000000) == 200 {
		panic("impossible")
	}

(XORconst [c] x) && !isARM64bitcon(uint64(c))  => (XOR x (MOVDconst [c]))
(TSTconst [c] x) && !isARM64bitcon(uint64(c))  => (TST x (MOVDconst [c]))
(TSTWconst [c] x) && !isARM64bitcon(uint64(c)|uint64(c)<<32)  => (TSTW x (MOVDconst [int64(c)]))

(CMPconst [c] x) && !isARM64addcon(c)  => (CMP x (MOVDconst [c]))
(CMPWconst [c] x) && !isARM64addcon(int64(c))  => (CMPW x (MOVDconst [int64(c)]))

	"SWPH",
	"SWPLB",
	"SWPLD",
	"SWPLH",
	"SWPLW",
	"SWPW",
	"SXTB",
	"SXTBW",
	"SXTH",
	"SXTHW",
	"SXTW",
	"SYS",
	"SYSL",
	"TBNZ",
	"TBZ",
	"TLBI",
	"TST",
	"TSTW",
	"UBFIZ",
	"UBFIZW",
	"UBFM",
	"UBFMW",
	"UBFX",
	"UBFXW",
	"UCVTFD",
	"UCVTFS",
	"UCVTFWD",
	"UCVTFWS",
	"UDIV",
	"UDIVW",
	"UMADDL",
	"UMNEGL",
	"UMSUBL",