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go/test/abi/bad_internal_offsets.go
David Chase 98dfdc82c8 cmd/compile: fix broken type+offset calc for register args
Includes more enhancements to debugging output.

Updates #44816.

Change-Id: I5b21815cf37ed21e7dec6c06f538090f32260203
Reviewed-on: https://go-review.googlesource.com/c/go/+/299409
Trust: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-03-09 18:44:23 +00:00

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// compile
//go:build !wasm
// +build !wasm
// 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 genChecker0
var FailCount int
//go:noinline
func NoteFailure(fidx int, pkg string, pref string, parmNo int, _ uint64) {
FailCount += 1
if FailCount > 10 {
panic("bad")
}
}
//go:noinline
func NoteFailureElem(fidx int, pkg string, pref string, parmNo int, elem int, _ uint64) {
FailCount += 1
if FailCount > 10 {
panic("bad")
}
}
type StructF0S0 struct {
F0 int16
F1 string
F2 StructF0S1
}
type StructF0S1 struct {
_ uint16
}
// 0 returns 3 params
//go:registerparams
//go:noinline
func Test0(p0 uint32, p1 StructF0S0, p2 int32) {
// consume some stack space, so as to trigger morestack
var pad [256]uint64
pad[FailCount]++
if p0 == 0 {
return
}
p1f0c := int16(-3096)
if p1.F0 != p1f0c {
NoteFailureElem(0, "genChecker0", "parm", 1, 0, pad[0])
return
}
p1f1c := "f6ꂅ8ˋ<"
if p1.F1 != p1f1c {
NoteFailureElem(0, "genChecker0", "parm", 1, 1, pad[0])
return
}
p1f2c := StructF0S1{}
if p1.F2 != p1f2c {
NoteFailureElem(0, "genChecker0", "parm", 1, 2, pad[0])
return
}
p2f0c := int32(496713155)
if p2 != p2f0c {
NoteFailureElem(0, "genChecker0", "parm", 2, 0, pad[0])
return
}
// recursive call
Test0(p0-1, p1, p2)
return
// 0 addr-taken params, 0 addr-taken returns
}