}
	}
	addF("math", "RoundToEven",
		makeRoundAMD64(ssa.OpRoundToEven),
		sys.AMD64)
	addF("math", "Floor",
		makeRoundAMD64(ssa.OpFloor),
		sys.AMD64)
	addF("math", "Ceil",
		makeRoundAMD64(ssa.OpCeil),
		sys.AMD64)
	addF("math", "Trunc",
		makeRoundAMD64(ssa.OpTrunc),
		sys.AMD64)

	/******** math/bits ********/
	addF("math/bits", "TrailingZeros64",

			v.AddArg3(a, x, y)
			return true
		}
		break
	}
	return false
}
func rewriteValueARM_OpARMADDF(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (ADDF a (MULF x y))
	// cond: a.Uses == 1 && buildcfg.GOARM.Version >= 6
	// result: (MULAF a x y)
	for {
		for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
			a := v_0
			if v_1.Op != OpARMMULF {