| Summary: | (unsigned * 2)/2 is not changed into unsigned &0x7FFFFFFF | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Andrew Pinski <pinskia> |
| Component: | middle-end | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED FIXED | ||
| Severity: | enhancement | CC: | gcc-bugs, jeffreyalaw |
| Priority: | P3 | Keywords: | missed-optimization, TREE |
| Version: | 4.2.0 | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Known to work: | ||
| Known to fail: | Last reconfirmed: | 2006-08-21 06:08:51 | |
| Bug Depends on: | |||
| Bug Blocks: | 19986 | ||
Author: naveenh Date: Fri Jul 24 04:47:48 2015 New Revision: 226136 URL: https://gcc.gnu.org/viewcvs?rev=226136&root=gcc&view=rev Log: PR middle-end/25529 2015-07-24 Naveen H.S <Naveen.Hurugalawadi@caviumnetworks.com> gcc/testsuite/ChangeLog: * gcc.dg/pr25529.c: New test. gcc/ChangeLog: * match.pd (trunc_div (mult @0 integer_pow2p@1) @1) : New simplifier. Added: trunk/gcc/testsuite/gcc.dg/pr25529.c Modified: trunk/gcc/ChangeLog trunk/gcc/match.pd trunk/gcc/testsuite/ChangeLog Author: naveenh Date: Thu Aug 13 04:37:22 2015 New Revision: 226847 URL: https://gcc.gnu.org/viewcvs?rev=226847&root=gcc&view=rev Log: 2015-08-13 Naveen H.S <Naveen.Hurugalawadi@caviumnetworks.com> PR middle-end/25529 * match.pd (div (mult @0 @1) @1) : New simplifier. Modified: trunk/gcc/ChangeLog trunk/gcc/match.pd Fixed. Presumably by Naveen's patch. |
Testcase: int f1(unsigned t) { return (t*2)/2; } This is done in combine on the RTL level.