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From: "dann at godzilla dot ics dot uci dot edu" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/38204] New: PRE for post dominating expressions Date: Thu, 20 Nov 2008 17:00:00 -0000 [thread overview] Message-ID: <bug-38204-1008@http.gcc.gnu.org/bugzilla/> (raw) For this function: int test (int a, int b, int c, int g) { int d, e; if (a) d = b * c; else d = b - c; e = b * c + g; return d + e; } the multiply expression is moved to both branches of the "if", it would be better to move it before the "if". Intel's compiler does that. -- Summary: PRE for post dominating expressions Product: gcc Version: 4.3.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dann at godzilla dot ics dot uci dot edu GCC host triplet: i386-pc-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38204
next reply other threads:[~2008-11-20 17:00 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-11-20 17:00 dann at godzilla dot ics dot uci dot edu [this message] 2008-11-21 6:43 ` [Bug middle-end/38204] " steven at gcc dot gnu dot org 2008-11-21 16:57 ` dberlin at gcc dot gnu dot org 2008-11-22 0:36 ` davidxl at gcc dot gnu dot org 2008-12-01 22:14 ` steven at gcc dot gnu dot org
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