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* [Bug tree-optimization/19105] New: fold does not spot anti-range test @ 2004-12-21 12:22 nathan at gcc dot gnu dot org 2004-12-21 12:22 ` [Bug tree-optimization/19105] " nathan at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 8+ messages in thread From: nathan at gcc dot gnu dot org @ 2004-12-21 12:22 UTC (permalink / raw) To: gcc-bugs The attached test case shows two equivalent functions, unfortunately the first is not optimized as best as the second. Notice the only different is the placement of some superfluous parentheses. Death to fold-const! -- Summary: fold does not spot anti-range test Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: nathan at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test 2004-12-21 12:22 [Bug tree-optimization/19105] New: fold does not spot anti-range test nathan at gcc dot gnu dot org @ 2004-12-21 12:22 ` nathan at gcc dot gnu dot org 2004-12-21 12:23 ` nathan at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 8+ messages in thread From: nathan at gcc dot gnu dot org @ 2004-12-21 12:22 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From nathan at gcc dot gnu dot org 2004-12-21 12:22 ------- Created an attachment (id=7793) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7793&action=view) testcase -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test 2004-12-21 12:22 [Bug tree-optimization/19105] New: fold does not spot anti-range test nathan at gcc dot gnu dot org 2004-12-21 12:22 ` [Bug tree-optimization/19105] " nathan at gcc dot gnu dot org @ 2004-12-21 12:23 ` nathan at gcc dot gnu dot org 2004-12-21 15:52 ` pinskia at gcc dot gnu dot org 2005-07-26 13:21 ` dberlin at gcc dot gnu dot org 3 siblings, 0 replies; 8+ messages in thread From: nathan at gcc dot gnu dot org @ 2004-12-21 12:23 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From nathan at gcc dot gnu dot org 2004-12-21 12:23 ------- Created an attachment (id=7794) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7794&action=view) assembly produced at -O2 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test 2004-12-21 12:22 [Bug tree-optimization/19105] New: fold does not spot anti-range test nathan at gcc dot gnu dot org 2004-12-21 12:22 ` [Bug tree-optimization/19105] " nathan at gcc dot gnu dot org 2004-12-21 12:23 ` nathan at gcc dot gnu dot org @ 2004-12-21 15:52 ` pinskia at gcc dot gnu dot org 2005-07-26 13:21 ` dberlin at gcc dot gnu dot org 3 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-12-21 15:52 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-21 15:52 ------- Fold unlike simplify_rtx does not do as re-association (or really as much as re-association). -- What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |enhancement Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |missed-optimization Last reconfirmed|0000-00-00 00:00:00 |2004-12-21 15:52:02 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test 2004-12-21 12:22 [Bug tree-optimization/19105] New: fold does not spot anti-range test nathan at gcc dot gnu dot org ` (2 preceding siblings ...) 2004-12-21 15:52 ` pinskia at gcc dot gnu dot org @ 2005-07-26 13:21 ` dberlin at gcc dot gnu dot org 3 siblings, 0 replies; 8+ messages in thread From: dberlin at gcc dot gnu dot org @ 2005-07-26 13:21 UTC (permalink / raw) To: gcc-bugs -- Bug 19105 depends on bug 21445, which changed state. Bug 21445 Summary: [meta-bug] we need a reassociate pass http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21445 What |Old Value |New Value ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 ^ permalink raw reply [flat|nested] 8+ messages in thread
[parent not found: <bug-19105-4@http.gcc.gnu.org/bugzilla/>]
* [Bug tree-optimization/19105] fold does not spot anti-range test [not found] <bug-19105-4@http.gcc.gnu.org/bugzilla/> @ 2012-01-20 3:47 ` pinskia at gcc dot gnu.org 2012-10-31 8:46 ` jakub at gcc dot gnu.org 2012-10-31 8:53 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu.org @ 2012-01-20 3:47 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed|2005-12-21 03:57:03 |2012-01-19 CC|gcc-bugs at gcc dot gnu.org | Blocks| |46309 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-20 03:15:49 UTC --- Related to PR 46309. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test [not found] <bug-19105-4@http.gcc.gnu.org/bugzilla/> 2012-01-20 3:47 ` pinskia at gcc dot gnu.org @ 2012-10-31 8:46 ` jakub at gcc dot gnu.org 2012-10-31 8:53 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-31 8:46 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-31 08:45:38 UTC --- Author: jakub Date: Wed Oct 31 08:45:27 2012 New Revision: 193028 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193028 Log: PR tree-optimization/19105 PR tree-optimization/21643 PR tree-optimization/46309 * tree-ssa-reassoc.c (init_range_entry): Add STMT argument and use it if EXP is NULL. (update_range_test): Handle OPCODE equal to ERROR_MARK and oe->op NULL. (optimize_range_tests): Likewise. (final_range_test_p, suitable_cond_bb, no_side_effect_bb, get_ops, maybe_optimize_range_tests): New functions. (reassociate_bb): Call maybe_optimize_range_tests if last stmt of bb is GIMPLE_COND that hasn't been visited yet. * gcc.dg/pr19105.c: New test. * gcc.dg/pr21643.c: New test. * gcc.dg/pr46309-2.c: New test. * gcc.c-torture/execute/pr46309.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr46309.c trunk/gcc/testsuite/gcc.dg/pr19105.c trunk/gcc/testsuite/gcc.dg/pr21643.c trunk/gcc/testsuite/gcc.dg/pr46309-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-reassoc.c ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/19105] fold does not spot anti-range test [not found] <bug-19105-4@http.gcc.gnu.org/bugzilla/> 2012-01-20 3:47 ` pinskia at gcc dot gnu.org 2012-10-31 8:46 ` jakub at gcc dot gnu.org @ 2012-10-31 8:53 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-31 8:53 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19105 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |jakub at gcc dot gnu.org Resolution| |FIXED Target Milestone|--- |4.8.0 --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-31 08:52:45 UTC --- Fixed. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2012-10-31 8:53 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-12-21 12:22 [Bug tree-optimization/19105] New: fold does not spot anti-range test nathan at gcc dot gnu dot org 2004-12-21 12:22 ` [Bug tree-optimization/19105] " nathan at gcc dot gnu dot org 2004-12-21 12:23 ` nathan at gcc dot gnu dot org 2004-12-21 15:52 ` pinskia at gcc dot gnu dot org 2005-07-26 13:21 ` dberlin at gcc dot gnu dot org [not found] <bug-19105-4@http.gcc.gnu.org/bugzilla/> 2012-01-20 3:47 ` pinskia at gcc dot gnu.org 2012-10-31 8:46 ` jakub at gcc dot gnu.org 2012-10-31 8:53 ` jakub at gcc dot gnu.org
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