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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns Date: Fri, 28 Aug 2015 11:59:00 -0000 [thread overview] Message-ID: <bug-67381-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381 Bug ID: 67381 Summary: genmatch does not honor the order of patterns Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: glisse at gcc dot gnu.org Target Milestone: --- (simplify (mult (BUILT_IN_SQRT@1 @0) @1) @0) (simplify (mult (BUILT_IN_SQRT @0) (BUILT_IN_SQRT @1)) (BUILT_IN_SQRT (mult @0 @1))) We can see in the generated files that it first tests if the second argument is sqrt before checking if both arguments are the same. See this thread: https://gcc.gnu.org/ml/gcc-patches/2015-08/msg01780.html It causes a failure in gcc.dg/builtins-11.c
next reply other threads:[~2015-08-28 11:59 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-08-28 11:59 glisse at gcc dot gnu.org [this message] 2015-08-28 13:09 ` [Bug tree-optimization/67381] " rguenth at gcc dot gnu.org 2015-08-28 23:10 ` pinskia at gcc dot gnu.org 2015-08-31 3:22 ` pinskia at gcc dot gnu.org 2015-08-31 8:43 ` rguenth at gcc dot gnu.org 2015-08-31 14:00 ` rguenth at gcc dot gnu.org 2015-08-31 14:02 ` rguenth at gcc dot gnu.org
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