[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #15 from CVS Commits --- The master branch has been updated by Wilco Dijkstra : https://gcc.gnu.org/g:e5e07b68187b9aa334519746c45b8cffc5eb7e5c commit r10-6038-ge5e07b68187b9aa334519746c45b8cffc5eb7e5c Author: Wilco Dijkstra Date:

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #14 from Jakub Jelinek --- (In reply to Wilco from comment #10) > (In reply to Jakub Jelinek from comment #9) > > Any -march= or similar? Can't reproduce with current trunk, nor > > with even Oct 10 GCC snapshot (crosses in both

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 Wilco changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |wilco at gcc dot gnu.org --- Comment #13

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #12 from ktkachov at gcc dot gnu.org --- (In reply to ktkachov from comment #11) > It will need a target with LSE atomics. -march=armv8.1-a or equivalent. Or > add +lse to an -march or -mcpu line. Wait, no sorry, this shouldn't be

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #11 from ktkachov at gcc dot gnu.org --- It will need a target with LSE atomics. -march=armv8.1-a or equivalent. Or add +lse to an -march or -mcpu line.

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #10 from Wilco --- (In reply to Jakub Jelinek from comment #9) > Any -march= or similar? Can't reproduce with current trunk, nor > with even Oct 10 GCC snapshot (crosses in both cases). > grep -B1 stxr pr92692.s > doesn't show any

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #9 from Jakub Jelinek --- Any -march= or similar? Can't reproduce with current trunk, nor with even Oct 10 GCC snapshot (crosses in both cases). grep -B1 stxr pr92692.s doesn't show any stores before stxr.

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #8 from Andrew Pinski --- (In reply to Jakub Jelinek from comment #7) > So, are you going to post a patch for that? I dont have time to work on it right now.

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #7

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #6 from Andrew Pinski --- (In reply to Wilco from comment #5) > Well I'm looking at the latest version > (https://static.docs.arm.com/ddi0487/ea/DDI0487E_a_armv8_arm.pdf) where in > figure B2-5 it explicitly states that a store that

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #5 from Wilco --- (In reply to Andrew Pinski from comment #4) > (In reply to Wilco from comment #3) > > (In reply to Andrew Pinski from comment #2) > > > I think this has been a latent bug since revision 243200: > > > [AArch64]

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #4 from Andrew Pinski --- (In reply to Wilco from comment #3) > (In reply to Andrew Pinski from comment #2) > > I think this has been a latent bug since revision 243200: > > [AArch64] Separate shrink wrapping hooks implementation

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 Wilco changed: What|Removed |Added CC||wilco at gcc dot gnu.org --- Comment #3 from

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 Andrew Pinski changed: What|Removed |Added CC||ktkachov at gcc dot gnu.org --- Comment

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 --- Comment #1 from Andrew Pinski --- >it turns out the issue is a gcc issue and a glibc issue. NOTE I had missed out a word here: This should have read: it turns out the issue is a gcc issue and NOT a glibc issue.

[Bug target/92692] [9/10 Regression] Saving off the callee saved register between ldxr/stxr (caused by shrink wrapping improvements)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692 Andrew Pinski changed: What|Removed |Added See Also||https://sourceware.org/bugz