Bug 257054 – sys-devel/gcc-4.3 - patch to fix code generation for constant address accesses

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Manuel Lauss 2009-01-31 08:52:19 UTC]

GCC up to and including 4.3.3 isn't very smart wrt. code generation for
accesses to constant addresses within a certain range.

See http://gcc.gnu.org/ml/gcc/2008-11/msg00231.html  for more information.

Richard Sandiford provided a patch against gcc-svn which I ported to 4.3.2.  Built KDE-3.5.10 and linux kernels with a patched compiler; I see no obvious malfunctions with either.

Please consider for inclusion into the gcc patch series.


Reproducible: Always

[Comment 1 Manuel Lauss 2009-01-31 08:53:29 UTC]

Created attachment 180385 [details, diff]
patch #1

The patch in question.  Applies cleanly to 4.3.2 and 4.3.3

[Comment 2 SpanKY 2009-02-22 01:26:38 UTC]

guessing the mips guys are ok with this, so queued in the 4.3.3 patchset

http://sources.gentoo.org/gentoo/src/patchsets/gcc/4.3.3/gentoo/78_all_mips-constant-addr.patch?rev=1.1

[Comment 3 Joshua Kinard 2009-02-22 01:33:58 UTC]

Yeah, looks good to me.  More optimization is better for us all!

[Comment 4 Manuel Lauss 2009-08-16 11:28:40 UTC]

Created attachment 201402 [details, diff]
Patch for gcc-4.4

I've uploaded a new tested patch for gcc-4.4[.1]

[Comment 5 SpanKY 2013-12-25 08:36:41 UTC]

(In reply to Manuel Lauss from comment #4)

if you have newer patches for newer versions of gcc, please file new bugs

[Comment 6 Manuel Lauss 2013-12-25 11:38:39 UTC]

Please close this bug, I'm using 4.8-branch now.
Thanks