go/test/codegen/clobberdeadreg.go
Russ Cox 915c1839fe 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>
2025-10-29 13:55:00 -07:00

33 lines
1.3 KiB
Go

// asmcheck -gcflags=-clobberdeadreg
//go:build amd64
// Copyright 2021 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
type S struct {
a, b, c, d, e, f int
}
func F(a, b, c int, d S) {
// -2401018187971961171 is 0xdeaddeaddeaddead
// amd64:`MOVQ \$-2401018187971961171, AX`, `MOVQ \$-2401018187971961171, BX`, `MOVQ \$-2401018187971961171, CX`
// amd64:`MOVQ \$-2401018187971961171, DX`, `MOVQ \$-2401018187971961171, SI`, `MOVQ \$-2401018187971961171, DI`
// amd64:`MOVQ \$-2401018187971961171, R8`, `MOVQ \$-2401018187971961171, R9`, `MOVQ \$-2401018187971961171, R10`
// amd64:`MOVQ \$-2401018187971961171, R11`, `MOVQ \$-2401018187971961171, R12`, `MOVQ \$-2401018187971961171, R13`
// amd64:-`MOVQ \$-2401018187971961171, BP` // frame pointer is not clobbered
StackArgsCall([10]int{a, b, c})
// amd64:`MOVQ \$-2401018187971961171, R12`, `MOVQ \$-2401018187971961171, R13`, `MOVQ \$-2401018187971961171, DX`
// amd64:-`MOVQ \$-2401018187971961171, AX`, -`MOVQ \$-2401018187971961171, R11` // register args are not clobbered
RegArgsCall(a, b, c, d)
}
//go:noinline
func StackArgsCall([10]int) {}
//go:noinline
//go:registerparams
func RegArgsCall(int, int, int, S) {}