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r169004 - in /trunk/gcc: ChangeLog config/mn103...
- From: rth at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Wed, 19 Jan 2011 16:57:37 -0000
- Subject: r169004 - in /trunk/gcc: ChangeLog config/mn103...
Author: rth
Date: Wed Jan 19 16:57:37 2011
New Revision: 169004
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169004
Log:
mn10300: Re-write move patterns.
Use the "D" and "A" constraints, and the enabled attribute to
unify all ofthe integer move patterns. Delete the fake double
word move patterns; let the middle-end generate subregs as required.
Unfortunately, this somehow exposes a register pressure problem
with the udivmod pattern. This is properly fixed with subsequent
patches that expose the MDR register.
In the meantime it is highly desirable to to preserve bisect-ability
of the patch series, so disable this pattern for AM30.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mn10300/mn10300.md