(Less(64|32)F ...) => (FLT(D|S) ...)

// Convert x <= y to !(y > x).
(Leq(64|32|16|8)  x y) => (Not (Less(64|32|16|8)  y x))
(Leq(64|32|16|8)U x y) => (Not (Less(64|32|16|8)U y x))
(Leq(64|32)F ...) => (FLE(D|S) ...)

(EqPtr x y) => (SEQZ (SUB <typ.Uintptr> x y))
(Eq64  x y) => (SEQZ (SUB <x.Type> x y))
(Eq32  x y) &&  x.Type.IsSigned() => (SEQZ (SUB <x.Type> (SignExt32to64 x) (SignExt32to64 y)))

		{name: "NE", controls: 1},
		{name: "LT", controls: 1},
		{name: "LE", controls: 1},
		{name: "GT", controls: 1},
		{name: "GE", controls: 1},
		{name: "FLT", controls: 1},
		{name: "FLE", controls: 1},
		{name: "FGT", controls: 1},
		{name: "FGE", controls: 1},
	}

	archs = append(archs, arch{
		name:               "PPC64",
		pkg:                "cmd/internal/obj/ppc64",