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From: "tkoenig at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/38592] eliminate some string comparisons Date: Sun, 21 Dec 2008 12:05:00 -0000 [thread overview] Message-ID: <20081221120338.29282.qmail@sourceware.org> (raw) In-Reply-To: <bug-38592-10391@http.gcc.gnu.org/bugzilla/> ------- Comment #1 from tkoenig at gcc dot gnu dot org 2008-12-21 12:03 ------- To clarify, we could detect that the variable only ever has the value of 'yes'. We already do the right thing with constants: $ cat foo-2.f90 program main character(len=3), parameter :: a = 'yes' print *,'yes' == a end program main $ gfortran -fdump-tree-original foo-2.f90 $ grep compare foo-2.f90.003t.original $ -- tkoenig at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Priority|P3 |P5 Summary|eliminate constant string |eliminate some string |comparisons |comparisons http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38592
next prev parent reply other threads:[~2008-12-21 12:05 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-12-21 10:47 [Bug fortran/38592] New: eliminate constant " tkoenig at gcc dot gnu dot org 2008-12-21 12:05 ` tkoenig at gcc dot gnu dot org [this message] 2008-12-28 1:32 ` [Bug fortran/38592] eliminate some " dfranke at gcc dot gnu dot org 2009-02-19 5:44 ` pault at gcc dot gnu dot org 2009-05-08 9:31 ` fxcoudert at gcc dot gnu dot org 2009-05-08 11:25 ` burnus at gcc dot gnu dot org
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