go/test/codegen/schedule.go

// asmcheck

// Copyright 2025 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.

package codegen

func f(n int) int {
	r := 0
	// arm64:-"MOVD  R"
	// amd64:-"LEAQ" "INCQ"
	for i := range n {
		r += i
	}
	return r
}
cmd/compile: schedule induction variable increments late for ..; ..; i++ { ... } We want to schedule the i++ late in the block, so that all other uses of i in the block are scheduled first. That way, i++ can happen in place in a register instead of requiring a temporary register. Change-Id: Id777407c7e67a5ddbd8e58251099b0488138c0df Reviewed-on: https://go-review.googlesource.com/c/go/+/672998 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> 2025-05-14 15:57:58 -07:00			`// asmcheck`

			`// Copyright 2025 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.`

			`package codegen`

			`func f(n int) int {`
			`r := 0`
test/codegen: simplify asmcheck pattern matching Separate patterns in asmcheck by spaces instead of commas. Many patterns end in comma (like "MOV [$]123,") so separating patterns by comma is not great; they're already quoted, so spaces are fine. Also replace all tabs in the assembly lines with spaces before matching. Finally, replace \$ or \\$ with [$] as the matching idiom. The effect of all these is to make the patterns look like: // amd64:"BSFQ" "ORQ [$]256" instead of the old: // amd64:"BSFQ","ORQ\t\\$256" Update all tests as well. Change-Id: Ia39febe5d7f67ba115846422789e11b185d5c807 Reviewed-on: https://go-review.googlesource.com/c/go/+/716060 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alan Donovan <adonovan@google.com> Reviewed-by: Jorropo <jorropo.pgm@gmail.com> 2025-10-26 22:51:14 -04:00			`// arm64:-"MOVD R"`
			`// amd64:-"LEAQ" "INCQ"`
cmd/compile: schedule induction variable increments late for ..; ..; i++ { ... } We want to schedule the i++ late in the block, so that all other uses of i in the block are scheduled first. That way, i++ can happen in place in a register instead of requiring a temporary register. Change-Id: Id777407c7e67a5ddbd8e58251099b0488138c0df Reviewed-on: https://go-review.googlesource.com/c/go/+/672998 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> 2025-05-14 15:57:58 -07:00			`for i := range n {`
			`r += i`
			`}`
			`return r`
			`}`