digitalmars.D.bugs - [Issue 11237] New: zero initializer emitted to read-only data segment, slow compilation
- d-bugmail puremagic.com (26/26) Oct 12 2013 http://d.puremagic.com/issues/show_bug.cgi?id=11237
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- d-bugmail puremagic.com (26/26) Oct 31 2013 http://d.puremagic.com/issues/show_bug.cgi?id=11237
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http://d.puremagic.com/issues/show_bug.cgi?id=11237
Summary: zero initializer emitted to read-only data segment,
slow compilation
Product: D
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: regression
Priority: P2
Component: DMD
AssignedTo: nobody puremagic.com
ReportedBy: code dawg.eu
cat > bug.d << CODE
struct Buffer { ubyte[64 * 1024] buffer; }
CODE
dmd -c bug
----
The compilation takes forever (5s) due to the reasons named in
http://d.puremagic.com/issues/show_bug.cgi?id=10866#c20.
It's a regression introduced after v2.063.2 that the initializer
is not emitted as BSS symbol.
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Oct 12 2013
d-bugmail puremagic.com
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Kenji Hara <k.hara.pg gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
*** This issue has been marked as a duplicate of issue 11233 ***
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Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Martin Nowak <code dawg.eu> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|DUPLICATE |
Bug 11233 was resolved which dix the performance issue.
We still need to do something about the rdata vs. BSS thing, otherwise zero
initializers use up unnecessary space in the object files.
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Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237 13:12:20 PDT --- https://github.com/D-Programming-Language/dmd/pull/2660 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237 Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/ba8b515e0adc6471aeef0bb1cca6a4092c15c037 fix Issue 11237 - zero initializer emitted to read-only data segment, slow compilation https://github.com/D-Programming-Language/dmd/commit/fc9b88cddaf3a279dcf5ce1ec8b262c4a47020e1 fix Issue 11237 - zero initializer emitted to read-only data segment, sl... -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Martin Nowak <code dawg.eu> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution| |FIXED
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Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237 Commit pushed to 2.064 at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/056d444ceb70ede8dff9b5fcca5deadb42c21433 fix Issue 11237 - zero initializer emitted to read-only data segment, sl... -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 13 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Martin Nowak <code dawg.eu> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |
The broke struct initializers.
They are emitted to object files with a symbol size of 1 byte regardless of
their actual size.
Also I wonder why the initializer are now common symbols ('V') while they
previously were normal uninitialized variables ('B').
Test case
cat > bug.d << CODE
struct Buffer { ubyte[64 * 1024] buffer; }
CODE
dmd2.063.2 -c bug
nm -S bug.o
0000000000000000 0000000000010000 B _D4bug26Buffer6__initZ
// 1-byte size and weak object
dmd2.064 -c bug
nm -S bug.o
0000000000000000 0000000000000001 V _D4bug26Buffer6__initZ
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Oct 31 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Martin Nowak <code dawg.eu> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |pull, wrong-code
https://github.com/D-Programming-Language/dmd/pull/2701
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Oct 31 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237 Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/a7985b238c08da200f1c68c50a52ee6f7aa7c941 fix ElfObj::common_block size - fix Issue 11237 - Need to explicitly pass the size of the defined common symbol as it can't be computed from the symbol type. https://github.com/D-Programming-Language/dmd/commit/ac537e9b7eb7f2910bbbbb6022a26e3eb08e348e struct initializer are not weak symbols - fix Issue 11237 - The function outdata will take care of the BSS optimization for DTallzeros. https://github.com/D-Programming-Language/dmd/commit/77632a636ae16605bb45c9f6f0ce0932adbfcf82 add test case for Issue 11237 - fix OS name of linux in Makefile https://github.com/D-Programming-Language/dmd/commit/37e15abcd77a67423f166d9de6895b63e22c4676 fix Issue 11237 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Nov 01 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237 Commit pushed to 2.064 at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/273baf36ccd718749f4f68c1d11473a64f473211 fix Issue 11237 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Nov 01 2013
http://d.puremagic.com/issues/show_bug.cgi?id=11237
Walter Bright <bugzilla digitalmars.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution| |FIXED
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Nov 02 2013