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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/60042] vectorizer still does too many dependence tests for himeno:jacobi Date: Wed, 05 Feb 2014 14:35:00 -0000 [thread overview] Message-ID: <bug-60042-4-DUt16RcItJ@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-60042-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60042 --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- PR23855 fixed we'd get for the analysis of the remaining DRs in the outermost loop for example for matrix A: Creating dr for *_290 analyze_innermost: success. base_address: pretmp_1792 + (sizetype) ((long unsigned int) pretmp_1974 * 4) offset from base address: 0 constant offset from base address: 4 step: 4 aligned to: 128 base_object: *pretmp_1792 + (sizetype) ((long unsigned int) (((pretmp_1831 + 1) * pretmp_1794 + 1) * pretmp_1796) * 4) Access function 0: {{{4B, +, (sizetype) ((long unsigned int) (pretmp_1794 * pretmp_1796) * 4)}_2, +, (sizetype) ((long unsigned int) pretmp_1796 * 4)}_6, +, 4}_7 Creating dr for *_81 analyze_innermost: success. base_address: pretmp_1792 + (sizetype) ((long unsigned int) pretmp_1915 * 4) offset from base address: 0 constant offset from base address: 4 step: 4 aligned to: 128 base_object: *pretmp_1792 + (sizetype) ((long unsigned int) (((pretmp_1804 + 1) * pretmp_1794 + 1) * pretmp_1796) * 4) Access function 0: {{{4B, +, (sizetype) ((long unsigned int) (pretmp_1794 * pretmp_1796) * 4)}_2, +, (sizetype) ((long unsigned int) pretmp_1796 * 4)}_6, +, 4}_7 Creating dr for *_60 analyze_innermost: success. base_address: pretmp_1792 + (sizetype) ((long unsigned int) pretmp_1902 * 4) offset from base address: 0 constant offset from base address: 4 step: 4 aligned to: 128 base_object: *pretmp_1792 + (sizetype) ((long unsigned int) (((pretmp_1801 + 1) * pretmp_1794 + 1) * pretmp_1796) * 4) Access function 0: {{{4B, +, (sizetype) ((long unsigned int) (pretmp_1794 * pretmp_1796) * 4)}_2, +, (sizetype) ((long unsigned int) pretmp_1796 * 4)}_6, +, 4}_7 which still requires hard work to actually combine as the base objects still differ (but the access function is equal).
next prev parent reply other threads:[~2014-02-05 14:35 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-02-03 11:19 [Bug tree-optimization/60042] New: " rguenth at gcc dot gnu.org 2014-02-03 11:23 ` [Bug tree-optimization/60042] " rguenth at gcc dot gnu.org 2014-02-03 13:51 ` rguenth at gcc dot gnu.org 2014-02-04 13:24 ` rguenth at gcc dot gnu.org 2014-02-04 13:34 ` rguenth at gcc dot gnu.org 2014-02-04 14:53 ` rguenth at gcc dot gnu.org 2014-02-04 15:09 ` rguenth at gcc dot gnu.org 2014-02-04 16:36 ` jakub at gcc dot gnu.org 2014-02-05 14:35 ` rguenth at gcc dot gnu.org [this message] 2014-04-14 13:57 ` rguenth at gcc dot gnu.org
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