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* [Bug fortran/43210] New: Initializer of huge static arrays should be improved
@ 2010-02-28 13:58 burnus at gcc dot gnu dot org
2010-02-28 15:03 ` [Bug fortran/43210] " burnus at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2010-02-28 13:58 UTC (permalink / raw)
To: gcc-bugs
Follow up to PR 43205
subroutine test()
integer, SAVE :: hugeArray(1000,1000) = 42
generates a huge initializer of the type:
static integer(kind=4) hugeArray = {42, 42, 42, ...., 42};
It would be possible to reduce the compile time and object size by initializing
it a run time:
static integer(kind=4) hugeArray;
static logical initialized = false
if (!initialized)
{
initialized = true
for(i=0, i < size; i++) hugeArray = 42;
}
The question is only how big the array should be. I think one common case of
this could also be -finit-integer=42.
--
Summary: Initializer of huge static arrays should be improved
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: burnus at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43210
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/43210] Initializer of huge static arrays should be improved
2010-02-28 13:58 [Bug fortran/43210] New: Initializer of huge static arrays should be improved burnus at gcc dot gnu dot org
@ 2010-02-28 15:03 ` burnus at gcc dot gnu dot org
2010-03-20 20:20 ` jvdelisle at gcc dot gnu dot org
2010-03-27 18:47 ` pault at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2010-02-28 15:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from burnus at gcc dot gnu dot org 2010-02-28 15:02 -------
A bonus: There should be only a single "logical initialized" variable for all
initializers.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43210
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/43210] Initializer of huge static arrays should be improved
2010-02-28 13:58 [Bug fortran/43210] New: Initializer of huge static arrays should be improved burnus at gcc dot gnu dot org
2010-02-28 15:03 ` [Bug fortran/43210] " burnus at gcc dot gnu dot org
@ 2010-03-20 20:20 ` jvdelisle at gcc dot gnu dot org
2010-03-27 18:47 ` pault at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: jvdelisle at gcc dot gnu dot org @ 2010-03-20 20:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from jvdelisle at gcc dot gnu dot org 2010-03-20 20:19 -------
See fortran-exp branch where we are working these issues. Once the splay-tree
structure is in place we can then focus on setting a limit and not "simplify"
the constructor.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43210
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/43210] Initializer of huge static arrays should be improved
2010-02-28 13:58 [Bug fortran/43210] New: Initializer of huge static arrays should be improved burnus at gcc dot gnu dot org
2010-02-28 15:03 ` [Bug fortran/43210] " burnus at gcc dot gnu dot org
2010-03-20 20:20 ` jvdelisle at gcc dot gnu dot org
@ 2010-03-27 18:47 ` pault at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: pault at gcc dot gnu dot org @ 2010-03-27 18:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pault at gcc dot gnu dot org 2010-03-27 18:47 -------
Confirmed
Paul
--
pault at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-03-27 18:47:20
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43210
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-03-27 18:47 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2010-02-28 13:58 [Bug fortran/43210] New: Initializer of huge static arrays should be improved burnus at gcc dot gnu dot org
2010-02-28 15:03 ` [Bug fortran/43210] " burnus at gcc dot gnu dot org
2010-03-20 20:20 ` jvdelisle at gcc dot gnu dot org
2010-03-27 18:47 ` pault at gcc dot gnu dot org
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