return OpARM64GreaterEqualF
	default:
		panic("unreachable")
	}
}

// arm64Invert evaluates (InvertFlags op), which
// is the same as altering the condition codes such
// that the same result would be produced if the arguments
// to the flag-generating instruction were reversed, e.g.
// (InvertFlags (CMP x y)) -> (CMP y x)
func arm64Invert(op Op) Op {
	switch op {
	case OpARM64LessThan:

		ssa.OpPPC64FLessEqual, ssa.OpPPC64FGreaterEqual:
		v.Fatalf("Pseudo-op should not make it to codegen: %s ###\n", v.LongString())
	case ssa.OpPPC64InvertFlags:
		v.Fatalf("InvertFlags should never make it to codegen %v", v.LongString())
	case ssa.OpPPC64FlagEQ, ssa.OpPPC64FlagLT, ssa.OpPPC64FlagGT:
		v.Fatalf("Flag* ops should never make it to codegen %v", v.LongString())

		reg: regInfo{
			inputs: []inputInfo{
				{0, 128}, // DI
				{1, 64},  // SI
				{2, 2},   // CX
			},
			clobbers: 194, // CX SI DI
		},
	},
	{
		name:   "InvertFlags",
		argLen: 1,
		reg:    regInfo{},
	},
	{
		name:   "LoweredGetG",
		argLen: 1,
		reg: regInfo{
			outputs: []outputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
		},