https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82248
--- Comment #6 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> --- Author: ramana Date: Tue Dec 5 16:32:55 2017 New Revision: 255428 URL: https://gcc.gnu.org/viewcvs?rev=255428&root=gcc&view=rev Log: [Patch ARM] Fix probe_stack constraint. The probe_stack pattern uses r0 as a fixed register. This can cause issues if we have auto-increment instructions coming out that have r0 as the base register. Tested with a bootstrap and regression run. richi reports that the original issue was fixed in the run. I did consider whether probe_stack_range was affected but it all comes back to probe_stack pattern so I think we are ok. I don't have a testcase that seems to provoke this but it seems to be default on most distributions so I'm expecting the testcoverage to come from there. Applied. Ramana PR target/82248 * config/arm/arm.md (probe_stack) : Use the 'o' constraint. Modified: trunk/gcc/ChangeLog trunk/gcc/config/arm/arm.md
