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* [Bug optimization/15346] New: [tree-ssa] combine two successive divisions @ 2004-05-09 19:23 kazu at cs dot umass dot edu 2004-05-09 19:24 ` [Bug optimization/15346] " pinskia at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: kazu at cs dot umass dot edu @ 2004-05-09 19:23 UTC (permalink / raw) To: gcc-bugs int foo (int a) { int tem = a / 5; return tem / 3; } Note that if the expression is written without tem like a / 5 / 3, then fold() can generate a / 15. -- Summary: [tree-ssa] combine two successive divisions Product: gcc Version: tree-ssa Status: UNCONFIRMED Keywords: pessimizes-code Severity: enhancement Priority: P2 Component: optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: kazu at cs dot umass dot edu CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug optimization/15346] [tree-ssa] combine two successive divisions 2004-05-09 19:23 [Bug optimization/15346] New: [tree-ssa] combine two successive divisions kazu at cs dot umass dot edu @ 2004-05-09 19:24 ` pinskia at gcc dot gnu dot org 2004-05-17 17:50 ` [Bug tree-optimization/15346] " pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-05-09 19:24 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-09 19:24 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-05-09 19:24:42 date| | Target Milestone|--- |tree-ssa http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/15346] [tree-ssa] combine two successive divisions 2004-05-09 19:23 [Bug optimization/15346] New: [tree-ssa] combine two successive divisions kazu at cs dot umass dot edu 2004-05-09 19:24 ` [Bug optimization/15346] " pinskia at gcc dot gnu dot org @ 2004-05-17 17:50 ` pinskia at gcc dot gnu dot org 2004-05-27 5:24 ` pinskia at gcc dot gnu dot org 2004-06-21 5:14 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-05-17 17:50 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-17 01:53 ------- Will be fixed when PR 15459 is fixed (I have a slight patch for PR 15459 which I can give to you if you want to try it). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/15346] [tree-ssa] combine two successive divisions 2004-05-09 19:23 [Bug optimization/15346] New: [tree-ssa] combine two successive divisions kazu at cs dot umass dot edu 2004-05-09 19:24 ` [Bug optimization/15346] " pinskia at gcc dot gnu dot org 2004-05-17 17:50 ` [Bug tree-optimization/15346] " pinskia at gcc dot gnu dot org @ 2004-05-27 5:24 ` pinskia at gcc dot gnu dot org 2004-06-21 5:14 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-05-27 5:24 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-26 14:32 ------- Mine. -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |pinskia at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Target Milestone|3.5.0 |--- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/15346] [tree-ssa] combine two successive divisions 2004-05-09 19:23 [Bug optimization/15346] New: [tree-ssa] combine two successive divisions kazu at cs dot umass dot edu ` (2 preceding siblings ...) 2004-05-27 5:24 ` pinskia at gcc dot gnu dot org @ 2004-06-21 5:14 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-06-21 5:14 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-21 05:13 ------- Will be submitting the tree combiner tonight. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2004-06-21 5:14 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-05-09 19:23 [Bug optimization/15346] New: [tree-ssa] combine two successive divisions kazu at cs dot umass dot edu 2004-05-09 19:24 ` [Bug optimization/15346] " pinskia at gcc dot gnu dot org 2004-05-17 17:50 ` [Bug tree-optimization/15346] " pinskia at gcc dot gnu dot org 2004-05-27 5:24 ` pinskia at gcc dot gnu dot org 2004-06-21 5:14 ` pinskia at gcc dot gnu dot org
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