[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #16 from rguenther at suse dot de rguenther at suse dot de --- On Thu, 15 Jan 2015, jakub at gcc dot gnu.org wrote: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #15 from Jakub Jelinek jakub at gcc dot gnu.org --- The testcases fail on x86_64 with -m32: grep 'loop with . iterations completely unrolled' pr61743-1.c.128t.cunroll pr61743-1.c:25:5: note: loop with 8 iterations completely unrolled pr61743-1.c:16:5: note: loop with 8 iterations completely unrolled pr61743-1.c:16:5: note: loop with 3 iterations completely unrolled pr61743-1.c:29:5: note: loop with 2 iterations completely unrolled pr61743-1.c:24:3: note: loop with 4 iterations completely unrolled grep 'loop with . iterations completely unrolled' pr61743-2.c.128t.cunroll pr61743-2.c:25:5: note: loop with 8 iterations completely unrolled pr61743-2.c:16:5: note: loop with 8 iterations completely unrolled pr61743-2.c:16:5: note: loop with 3 iterations completely unrolled pr61743-2.c:29:5: note: loop with 2 iterations completely unrolled pr61743-2.c:24:3: note: loop with 4 iterations completely unrolled (latest trunk). With -m64 they work fine. Huh, it passed for me ontop of r219648. Let me re-check.
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #17 from Richard Biener rguenth at gcc dot gnu.org --- Works for me and also for HJ it seems. (fixed)
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #18 from Richard Biener rguenth at gcc dot gnu.org --- Author: rguenth Date: Fri Jan 16 12:06:07 2015 New Revision: 219725 URL: https://gcc.gnu.org/viewcvs?rev=219725root=gccview=rev Log: 2015-01-16 Richard Biener rguent...@suse.de PR tree-optimization/61743 * gcc.dg/tree-ssa/pr61743-1.c: Add -fno-tree-vectorize. * gcc.dg/tree-ssa/pr61743-2.c: Likewise. Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #14 from Richard Biener rguenth at gcc dot gnu.org --- Author: rguenth Date: Thu Jan 15 15:02:11 2015 New Revision: 219662 URL: https://gcc.gnu.org/viewcvs?rev=219662root=gccview=rev Log: 2015-01-15 Richard Biener rguent...@suse.de PR tree-optimization/61743 * tree-ssa-pre.c (insert_into_preds_of_block): Preserve range information on PHIs for some simple cases. * gcc.dg/tree-ssa/pr61743-1.c: New testcase. * gcc.dg/tree-ssa/pr61743-2.c: Likewise. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-pre.c
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #15 from Jakub Jelinek jakub at gcc dot gnu.org --- The testcases fail on x86_64 with -m32: grep 'loop with . iterations completely unrolled' pr61743-1.c.128t.cunroll pr61743-1.c:25:5: note: loop with 8 iterations completely unrolled pr61743-1.c:16:5: note: loop with 8 iterations completely unrolled pr61743-1.c:16:5: note: loop with 3 iterations completely unrolled pr61743-1.c:29:5: note: loop with 2 iterations completely unrolled pr61743-1.c:24:3: note: loop with 4 iterations completely unrolled grep 'loop with . iterations completely unrolled' pr61743-2.c.128t.cunroll pr61743-2.c:25:5: note: loop with 8 iterations completely unrolled pr61743-2.c:16:5: note: loop with 8 iterations completely unrolled pr61743-2.c:16:5: note: loop with 3 iterations completely unrolled pr61743-2.c:29:5: note: loop with 2 iterations completely unrolled pr61743-2.c:24:3: note: loop with 4 iterations completely unrolled (latest trunk). With -m64 they work fine.
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 Richard Biener rguenth at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P1
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #12 from Yuri Rumyantsev ysrumyan at gmail dot com --- Richard, Did you have a chance to look at this and prepare more general fix? Thanks. Yuri. 2014-09-08 15:13 GMT+04:00 rguenther at suse dot de gcc-bugzi...@gcc.gnu.org: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #11 from rguenther at suse dot de rguenther at suse dot de --- On Mon, 8 Sep 2014, ysrumyan at gmail dot com wrote: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #10 from Yuri Rumyantsev ysrumyan at gmail dot com --- Richard, Do you have any progress? No, I didn't yet have time to get back to this. -- You are receiving this mail because: You reported the bug.
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #13 from rguenther at suse dot de rguenther at suse dot de --- On Fri, 24 Oct 2014, ysrumyan at gmail dot com wrote: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #12 from Yuri Rumyantsev ysrumyan at gmail dot com --- Richard, Did you have a chance to look at this and prepare more general fix? No, I'm swamped with other work. I plan to look into this during stage3.
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #10 from Yuri Rumyantsev ysrumyan at gmail dot com --- Richard, Do you have any progress? Thanks. 2014-08-13 12:35 GMT+04:00 rguenth at gcc dot gnu.org gcc-bugzi...@gcc.gnu.org: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #9 from Richard Biener rguenth at gcc dot gnu.org --- (In reply to Yuri Rumyantsev from comment #8) Richard, I tested both proposed fixes and i turned out that the first one is preferable since performance of benchmark came back. Note that hoisting 2nd vrp pass gave us another 14% slowdown but I did not investigate it. Should I tested your fix or you do it yourself? I'd like to explore on how to make it a little more generic, it's a very special hack as-is. Thanks. -- You are receiving this mail because: You reported the bug.
[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #11 from rguenther at suse dot de rguenther at suse dot de --- On Mon, 8 Sep 2014, ysrumyan at gmail dot com wrote: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743 --- Comment #10 from Yuri Rumyantsev ysrumyan at gmail dot com --- Richard, Do you have any progress? No, I didn't yet have time to get back to this.
