It's not a bug or a performance issue. Just because I am about to have a long hoilday, so I want to learn some knowledge about go compiler. But as a newbie in assembly, I spent some time on Google but couldn't understand this instruction. 在2023年9月27日星期三 UTC+8 12:43:05<Kurtis Rader> 写道：
> More context regarding your question might help. Why are you trying to > understand the assembly code? Are you trying to debug a failure in the > wild? Are you trying to make the implementation more efficient? Are you > simply curious how the implementation works? Your question is rather broad > and likely to require a lot of explanatory text. It is unlikely someone > will write that explanatory text without a good reason. They might give you > a link, like Ian did, to a document that describes the high level details. > But it is unlikely there is a public document, like an enhancement > proposal, that answers your question at the level of detail of > specific instruction sequences. > > On Tue, Sep 26, 2023 at 9:10 PM j2gg0s <feys...@gmail.com> wrote: > >> Thanks @lan >> >> Already read it, I actually started here. >> >> What I can't understand is x64 rip-relative address. >> >> leaq 132795(%rip), %rcx # 0x49b4e8 <go:func.*+0x220> >> >> why 132795, and what is loaded into rcx >> 在2023年9月27日星期三 UTC+8 09:38:17<Ian Lance Taylor> 写道： >> >>> On Tue, Sep 26, 2023 at 7:43 AM j2gg0s <feys...@gmail.com> wrote: >>> > >>> > How to understand assmbly code ` 47ae26: 48 8d 0d bb 06 02 00 leaq >>> 132795(%rip), %rcx # 0x49b4e8 <go:func.*+0x220>` >>> >>> The best place to start is >>> >>> >>> https://go.googlesource.com/proposal/+/refs/heads/master/design/34481-opencoded-defers.md >>> >>> >>> Ian >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/69d8ca43-d4e7-4945-ab94-9951fa51188dn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/golang-nuts/69d8ca43-d4e7-4945-ab94-9951fa51188dn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Kurtis Rader > Caretaker of the exceptional canines Junior and Hank > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/c99e76e2-eeb5-4775-9120-bffd3215dc40n%40googlegroups.com.
