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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/99755] failure to fold a conditional that's a subset of another expression Date: Thu, 25 Mar 2021 07:57:36 +0000 [thread overview] Message-ID: <bug-99755-4-zlkqJOgHF8@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-99755-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99755 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Blocks| |85316 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-03-25 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. We have no good notion of predicate combinations, their "range" or how other ranges depend on predicates. It would be interesting to see how LLVM arrives at a folded f2(). Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85316 [Bug 85316] [meta-bug] VRP range propagation missed cases
next prev parent reply other threads:[~2021-03-25 7:57 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-24 23:36 [Bug tree-optimization/99755] New: " msebor at gcc dot gnu.org 2021-03-25 7:57 ` rguenth at gcc dot gnu.org [this message] 2021-03-25 13:52 ` [Bug tree-optimization/99755] " amacleod at redhat dot com 2022-01-12 0:39 ` amacleod at redhat dot com
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