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Re: [PATCH, ivopts] Handle type-converted IVs better
- From: Roger Sayle <roger at eyesopen dot com>
- To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>, Adam Nemet <anemet at caviumnetworks dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 21 Sep 2006 20:25:02 -0600 (MDT)
- Subject: Re: [PATCH, ivopts] Handle type-converted IVs better
On Thu, 21 Sep 2006, Zdenek Dvorak wrote:
> > * tree-ssa-loop-ivopts.c (aff_combination_convert,
> > determine_common_wider_type): New functions.
> > (get_computation_aff): Use them to simplify arithmetic between
> > UBASE and CBASE if they are shortened from the same type.
> >
> >
> > * gcc.dg/tree-ssa/ivopts-1.c: New test.
Given that Zdenek is happy with it, this is OK for 4.3 (once we branch).
No where in the thread has it been mentioned that this is a regression
fix, so it isn't really suitable for mainline whilst we're in stage 3.
It's a nice iv-opts improvement, though.
Thanks to you both,
Roger
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