Public bug reported: ---Problem Description--- HTM builtins aren't treated as compiler barriers on powerpc Contact Information = berg...@us.ibm.com ---Steps to Reproduce---
This bug is a mirror of the (fixed) upstream FSF bugzilla https://gcc.gnu.org/PR67281 All relevant information regarding the bug and the fix can be found there. This bugzilla is to track backporting of the fix to the GCC 4.8, 4.9 and 5 based compilers. Userspace tool common name: GCC Userspace rpm: gcc-4.8, gcc-4.9 and gcc-5 == Comment: #1 The fix for the FSF GCC 5 branch was committed with: r228846 | bergner | 2015-10-15 11:38:47 -0500 (Thu, 15 Oct 2015) | 16 lines Backport from mainline 2015-10-14 Peter Bergner <berg...@vnet.ibm.com> Torvald Riegel <trie...@redhat.com> PR target/67281 * config/rs6000/htm.md (UNSPEC_HTM_FENCE): New. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): Rename define_insns from this... (*tabort, *tabort<wd>c, *tabort<wd>ci, *tbegin, *tcheck, *tend, *trechkpt, *treclaim, *tsr, *ttest): ...to this. Add memory barrier. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): New define_expands. * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define __TM_FENCE__ for htm. * doc/extend.texi: Update documentation for htm builtins. == Comment: #2 The fix for the FSF GCC 4.9 branch was committed with: r228847 | bergner | 2015-10-15 11:40:14 -0500 (Thu, 15 Oct 2015) | 16 lines Backport from mainline 2015-10-14 Peter Bergner <berg...@vnet.ibm.com> Torvald Riegel <trie...@redhat.com> PR target/67281 * config/rs6000/htm.md (UNSPEC_HTM_FENCE): New. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): Rename define_insns from this... (*tabort, *tabort<wd>c, *tabort<wd>ci, *tbegin, *tcheck, *tend, *trechkpt, *treclaim, *tsr, *ttest): ...to this. Add memory barrier. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): New define_expands. * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define __TM_FENCE__ for htm. * doc/extend.texi: Update documentation for htm builtins. == Comment: #3 Since the FSF 4.8 branch is closed, here is a backport of the fix along with another simple HTM wrong code bug to GCC 4.8. Backport from mainline 2015-10-14 Peter Bergner <berg...@vnet.ibm.com> Torvald Riegel <trie...@redhat.com> PR target/67281 * config/rs6000/htm.md (UNSPEC_HTM_FENCE): New. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): Rename define_insns from this... (*tabort, *tabort<wd>c, *tabort<wd>ci, *tbegin, *tcheck, *tend, *trechkpt, *treclaim, *tsr, *ttest): ...to this. Add memory barrier. (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend, trechkpt, treclaim, tsr, ttest): New define_expands. * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define __TM_FENCE__ for htm. * doc/extend.texi: Update documentation for htm builtins. Backport from mainline: 2015-08-03 Peter Bergner <berg...@vnet.ibm.com> * config/rs6000/htm.md (tabort.): Restrict the source operand to using a base register. ** Affects: ubuntu Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-133232 severity-medium targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-133232 severity-medium targetmilestone-inin--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1517093 Title: HTM builtins aren't treated as compiler barriers on powerpc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1517093/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
