func lower(f *Func) {
	// repeat rewrites until we find no more rewrites
	applyRewrite(f, f.Config.lowerBlock, f.Config.lowerValue, removeDeadValues)
}

// lateLower applies those rules that need to be run after the general lower rules.
func lateLower(f *Func) {
	// repeat rewrites until we find no more rewrites
	if f.Config.lateLowerValue != nil {
		applyRewrite(f, f.Config.lateLowerBlock, f.Config.lateLowerValue, removeDeadValues)

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file contains rules used by the laterLower pass.
// These are often the exact inverse of rules in ARM64.rules.

(ADDconst [c] x) && !isARM64addcon(c)  => (ADD x (MOVDconst [c]))
(SUBconst [c] x) && !isARM64addcon(c)  => (SUB x (MOVDconst [c]))

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file contains rules used by the laterLower pass.

// Simplify ISEL x $0 z into ISELZ
(ISEL [a] x (MOVDconst [0]) z) => (ISELZ [a] x z)
// Simplify ISEL $0 y z into ISELZ by inverting comparison and reversing arguments.
(ISEL [a] (MOVDconst [0]) y z) => (ISELZ [a^0x4] y z)