[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

-- pinskia at gcc dot gnu dot org changed: What|Removed |Added Target Milestone|--- |4.3.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31995

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #8 from pinskia at gcc dot gnu dot org 2007-05-22 00:09 --- Subject: Bug 31995 Author: pinskia Date: Mon May 21 23:08:54 2007 New Revision: 124927 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=124927 Log: 2007-05-21 Andrew Pinski [EMAIL PROTECTED] PR

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #7 from pinskia at gcc dot gnu dot org 2007-05-22 00:09 --- Fixed. -- pinskia at gcc dot gnu dot org changed: What|Removed |Added Status|ASSIGNED

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #2 from pinskia at gcc dot gnu dot org 2007-05-20 09:40 --- Created an attachment (id=13587) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13587action=view) Patch which fixes the problem I think this patch is correct, the issue is two fold, one we don't consider

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #3 from pinskia at gcc dot gnu dot org 2007-05-20 10:28 --- There were no regressions in the vect.exp testsuite on powerpc-darwin. Plus a quick s/x+i+1/y+i+1/ on this testcase gives the correct answer of t.c:19: note: not vectorized: can't determine dependence between

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #4 from pinskia at gcc dot gnu dot org 2007-05-20 21:44 --- Created an attachment (id=13591) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13591action=view) new patch This new patch changes one little thing dealing with how with indirect references are handled in

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #5 from pinskia at gcc dot gnu dot org 2007-05-20 23:03 --- (From update of attachment 13591) I take this back, this can cause an ICE with some code (which seems like I should add a testcase). -- pinskia at gcc dot gnu dot org changed: What|Removed

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #6 from pinskia at gcc dot gnu dot org 2007-05-20 23:06 --- (From update of attachment 13587) This patch is safer and allows us to add more to build_classic_dist_vector_1. Like when the two access functions are constants, just take the difference. (which might be needed

[Bug tree-optimization/31995] can't determine dependence between p-a[x+i] and p-a[x+i+1]

--- Comment #1 from pinskia at gcc dot gnu dot org 2007-05-20 05:34 --- A quick note we can determine the depency between p-a[i] and p-a[i+1]. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31995