RFR: 8325821: [REDO] use "dmb.ishst+dmb.ishld" for release barrier [v7]

[kuaiwei]

On Tue, 16 Apr 2024 09:10:38 GMT, Andrew Haley <aph at openjdk.org> wrote:

> > > Hi, I guess this isn't quite ready for review let. I'll have another look whan it is.
> > 
> > 
> > Is there any other gap I'm not aware?
> 
> Well, you're asking me to speculate on what you're aware of, but the very first thing I see when I run "java -version" with this patch is this, so I assume you're not finished.
> 
> ```
>   0x0000ffffe8ad2750:   str		w11, [x0, #0x14]    ;*invokespecial <init> {reexecute=0 rethrow=0 return_oop=0}
>                                                             ; - java.lang.StringLatin1::replace at 123 (line 427)
>  ;; membar_release
>   0x0000ffffe8ad2754:   dmb		ishld
>   0x0000ffffe8ad2758:   dmb		ishst               ;*new {reexecute=0 rethrow=0 return_oop=0}
>                                                             ; - java.lang.StringLatin1::replace at 116 (line 427)
>  ;; membar_release
>   0x0000ffffe8ad275c:   dmb		ishld
>   0x0000ffffe8ad2760:   dmb		ishst               ;*synchronization entry
>                                                             ; - java.lang.StringLatin1::replace at -1 (line 408)
> ```

I verified and not reproduced the error. Last week I rebase the patch to resolve a conflict  with master branch. I think the error may be caused by apply the patch to old base.

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PR Comment: https://git.openjdk.org/jdk/pull/18467#issuecomment-2059024841