[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 vries at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #10 from vries at gcc dot gnu.org --- asked follow-up question ( https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00444.html ), waiting for answer before marking fixed-resolved.

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #9 from vries at gcc dot gnu.org --- Author: vries Date: Sat Apr 9 15:28:24 2016 New Revision: 234851 URL: https://gcc.gnu.org/viewcvs?rev=234851=gcc=rev Log: Fix pdr accesses order 2016-04-09 Tom de Vries

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 vries at gcc dot gnu.org changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |vries at gcc dot

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 vries at gcc dot gnu.org changed: What|Removed |Added Keywords||patch --- Comment #7 from

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #6 from vries at gcc dot gnu.org --- (In reply to vries from comment #5) > The patch changes the order of the subscript functions Oops, that's accesses, actually. > (that was the easiest > for me to implement) to: > [alias set,

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #5 from vries at gcc dot gnu.org --- Created attachment 38207 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38207=edit demonstrator patch In add_pdr_constraints, for the EXTRADIM=0 case we have: ... accesses: { S_4[i1, i2] ->

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #4 from vries at gcc dot gnu.org --- Created attachment 38178 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38178=edit UDIFF

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #3 from vries at gcc dot gnu.org --- A way to look at the problem is to compare against the dump info for the variant without the extra (redundant) dimension. So, compare dump-info for -DEXTRADIM={0,1} for this source: ... #if

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #2 from vries at gcc dot gnu.org --- (In reply to vries from comment #1) > Created attachment 38141 [details] > updated test-case > > Fails with -O1, passes with -O2. > > The problem is that this loop nest: > ... > for (zh = 0;

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 --- Comment #1 from vries at gcc dot gnu.org --- Created attachment 38141 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38141=edit updated test-case Fails with -O1, passes with -O2. The problem is that this loop nest: ... for (zh = 0;

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 vries at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 Jeffrey A. Law changed: What|Removed |Added Priority|P3 |P4 CC|

[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953 Richard Biener changed: What|Removed |Added CC||spop at gcc dot gnu.org Target