https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #12 from Jonathan Wakely ---
I suppose we can do this then:
--- a/libstdc++-v3/testsuite/lib/dg-options.exp
+++ b/libstdc++-v3/testsuite/lib/dg-options.exp
@@ -296,7 +296,6 @@ proc add_options_for_libatomic { flags } {
if {
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #11 from John Paul Adrian Glaubitz ---
(In reply to Eric Botcazou from comment #10)
> Applied on the mainline only since not appropriate for release branches.
OK, thanks! I will ask Matthias for including the patch in gcc-11 on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
Eric Botcazou changed:
What|Removed |Added
Resolution|--- |FIXED
Target Milestone|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #9 from CVS Commits ---
The master branch has been updated by Eric Botcazou :
https://gcc.gnu.org/g:23987912ddb4207de0714d81237f93f613557d1f
commit r12-6938-g23987912ddb4207de0714d81237f93f613557d1f
Author: Eric Botcazou
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #8 from John Paul Adrian Glaubitz ---
Any updates on this?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #7 from John Paul Adrian Glaubitz ---
FWIW, I also asked David Miller regarding the register preservation and here is
his answer:
> The full 64-bit registers of the out and global registers are saved at trap
> time.
> But only
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
Eric Botcazou changed:
What|Removed |Added
Status|NEW |ASSIGNED
Assignee|unassigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #6 from John Paul Adrian Glaubitz ---
(In reply to Eric Botcazou from comment #5)
> > The function init_sparc64_elf_hwcap(void) [1] unconditionally enables it
> > with:
> >
> > cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #5 from Eric Botcazou ---
> The function init_sparc64_elf_hwcap(void) [1] unconditionally enables it
> with:
>
> cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
>
> So, I think it should be safe and enable V8+ on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #4 from John Paul Adrian Glaubitz ---
(In reply to John Paul Adrian Glaubitz from comment #3)
> I think that should be the case given that the 32-bit SPARC port in Debian
> has been based on the SPARCV8+ baseline since 2007 [1].
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
Richard Biener changed:
What|Removed |Added
Target Milestone|12.0|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #3 from John Paul Adrian Glaubitz ---
(In reply to Eric Botcazou from comment #2)
> Created attachment 52272 [details]
> Tentative fix
Thanks a lot for the quick fix.
> This requires that the kernel preserves the full 64-bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
--- Comment #2 from Eric Botcazou ---
Created attachment 52272
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52272=edit
Tentative fix
This requires that the kernel preserves the full 64-bit registers even in
32-bit mode, like on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104189
Eric Botcazou changed:
What|Removed |Added
Target Milestone|--- |12.0
Ever confirmed|0
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