[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #15 from rguenth at gcc dot gnu dot org 2010-05-19 12:54 --- Fixed. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Status|NEW |RESOLVED Known to fail||4.5.0 Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #13 from hjl at gcc dot gnu dot org 2010-05-10 14:02 --- Subject: Bug 44012 Author: hjl Date: Mon May 10 14:02:43 2010 New Revision: 159223 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=159223 Log: Nullify regno_allocno_map of the removed allocno. gcc/ 2010-05-10 H.J. Luhongjiu...@intel.com Vladimir Makarovvmaka...@redhat.com PR rtl-optimization/44012 * ira-build.c (remove_unnecessary_allocnos): Nullify regno_allocno_map of the removed allocno. gcc/testsuite/ 2010-05-10 H.J. Lu hongjiu...@intel.com PR rtl-optimization/44012 * gcc.dg/pr44012.c: New. Added: trunk/gcc/testsuite/gcc.dg/pr44012.c Modified: trunk/gcc/ChangeLog trunk/gcc/ira-build.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #14 from hjl at gcc dot gnu dot org 2010-05-10 14:05 --- Subject: Bug 44012 Author: hjl Date: Mon May 10 14:05:16 2010 New Revision: 159224 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=159224 Log: Nullify regno_allocno_map of the removed allocno. gcc/ 2010-05-10 H.J. Lu hongjiu...@intel.com Backport from mainline 2010-05-10 H.J. Luhongjiu...@intel.com Vladimir Makarovvmaka...@redhat.com PR rtl-optimization/44012 * ira-build.c (remove_unnecessary_allocnos): Nullify regno_allocno_map of the removed allocno. gcc/testsuite/ 2010-05-10 H.J. Lu hongjiu...@intel.com Backport from mainline 2010-05-10 H.J. Lu hongjiu...@intel.com PR rtl-optimization/44012 * gcc.dg/pr44012.c: New. Added: branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/pr44012.c Modified: branches/gcc-4_5-branch/gcc/ChangeLog branches/gcc-4_5-branch/gcc/ira-build.c branches/gcc-4_5-branch/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #11 from rguenth at gcc dot gnu dot org 2010-05-07 09:46 --- There may be a dup of this bug (can't find it right now). -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Target Milestone|--- |4.5.1 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #12 from vmakarov at redhat dot com 2010-05-07 17:49 --- When allocno is finished, its some info is propagated into upper allocno. When several allocnos with same regno are finished, info can be propagated directly to survived upper allocno or through one allocno will be finished. It depends on region configuration and order of allocnos with the same regno in the corresponding list. The sigsegv occurs in the second case when we remove allocno and propagates this info through allready removed allocno. It happens because regno_allocno_map which is used to find allocno into which the info to propagate is not nullified after removing allocno. H.J.'s patch idea is right but the patch is complicated. I'll send a simplier patch soon. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #7 from zsojka at seznam dot cz 2010-05-06 16:47 --- You are right, the reduced testcase from comment #4 crashes with: Command line: $ gcc -O1 -fgcse pr44012.c Tested revisions: r159109 - crash r158683 - crash r157702 - crash r153685 - crash 4.5 r158978 - crash 4.4 r158133 - OK 4.4 r157895 - OK -- zsojka at seznam dot cz changed: What|Removed |Added Summary|ICE: SIGSEGV in |[4.5/4.6 Regression] ICE: |ira_merge_allocno_live_range|SIGSEGV in |s |ira_merge_allocno_live_range ||s http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #8 from hjl dot tools at gmail dot com 2010-05-06 18:57 --- (In reply to comment #4) Created an attachment (id=20589) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20589action=view) [edit] reduced testcase Command line: gcc -O1 -fgcse -findirect-inlining pr44012.c not tested with r159108 yet This is caused by revision 147852: http://gcc.gnu.org/ml/gcc-cvs/2009-05/msg00829.html There may be 2 bugs. -- hjl dot tools at gmail dot com changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|-00-00 00:00:00 |2010-05-06 18:57:42 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #9 from hjl dot tools at gmail dot com 2010-05-06 21:01 --- Created an attachment (id=20590) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20590action=view) A patch This patch avoids ICE. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
[Bug rtl-optimization/44012] [4.5/4.6 Regression] ICE: SIGSEGV in ira_merge_allocno_live_ranges
--- Comment #10 from zsojka at seznam dot cz 2010-05-07 00:32 --- (In reply to comment #9) That patch fixes all testcases and flag combinations I tried (eg. gcc doesn't crash) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44012
