RFR: 8255606: Enable concurrent stack processing on x86_32 platforms [v2]

[Aleksey Shipilev]

On Fri, 30 Oct 2020 12:14:55 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

>> 8255606: Enable concurrent stack processing on x86_32 platforms
>
> Zhengyu Gu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix jump direction

I have minor comments.

src/hotspot/cpu/x86/x86_32.ad line 656:

> 654:   st->print_cr("POPL   EBP"); st->print("\t");
> 655:   if (do_polling() && C->is_method_compilation()) {
> 656:     st->print("cmpptr   rsp, poll_offset[thread]  \n\t"

Let's say `CMPL` here? I don't think we reference `cmpptr` in outputs here. Also, note every instruction is capitalized in `x86_32.ad`.

src/hotspot/cpu/x86/x86_64.ad line 933:

> 931:   if (do_polling() && C->is_method_compilation()) {
> 932:     st->print("\t");
> 933:     st->print_cr("cmpptr   rsp, poll_offset[r15_thread] \n\t"

Ditto, leave `cmpq` here.

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Changes requested by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/945