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digitalmars.D.bugs - [Issue 12509] New: Compiler performance highly depends on declared array size - for struct with long static array of structs

reply d-bugmail puremagic.com writes:
https://d.puremagic.com/issues/show_bug.cgi?id=12509

           Summary: Compiler performance highly depends on declared array
                    size - for struct with long static array of structs
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: coolreader.org gmail.com



23:16:28 PDT ---
Created an attachment (id=1342)
Source file to reproduce

DMD 2.065 under winXP/32 compiles following example very slow

 dmd main.d


(compliles very slow)
Not reproduced with 64bit compiler on linux
--- main.d --------------------------
module main;

struct Foo // must be struct to reproduce
{
    uint foo; // any data can be here
}

struct Bar // must be struct to reproduce
{
    // DMD 2.065 hang with 100% CPU load
    // works ok if array size is reduced
    Foo[0x20000] _array;
    //  0x4000 - < 1 second
    //  0x8000 - 5 seconds
    //  0xC000 - 15 seconds
    //  0xE000 - 20 seconds
    //  0x10000 - 25 seconds
    //  0x20000 - 1:45 
}

int main(string[] argv)
{
    return 0;
}
---------------------------------------

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Apr 02 2014
next sibling parent d-bugmail puremagic.com writes:
https://d.puremagic.com/issues/show_bug.cgi?id=12509


Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |michaelpm394 gmail.com



17:30:56 CEST ---
*** Issue 12525 has been marked as a duplicate of this issue. ***

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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Vladimir Panteleev <thecybershadow gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thecybershadow gmail.com
           Severity|normal                      |regression



18:32:03 EEST ---
This is a regression in 2.064.2.

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18:40:29 EEST ---
Introduced in https://github.com/D-Programming-Language/dmd/pull/2605

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |performance, pull



https://github.com/D-Programming-Language/dmd/pull/3425

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Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/f111434251af84e90abc709a49527ec76b9e1a97
fix Issue 12509 - Compiler performance highly depends on declared array size -
for struct with long static array of structs

https://github.com/D-Programming-Language/dmd/commit/db2291fc32b08187fb5862eefe3160a3e6b3dd90


[REG2.064] Issue 12509 - Compiler performance highly depends on declared array
size - for struct with long static array of structs

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Apr 08 2014
prev sibling parent d-bugmail puremagic.com writes:
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Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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