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Re: [ARM]Extra load store/instructions compared to gcc-3.4


Hi,

This is a case when ivopts pass makes too many induction variables, exceeding
the number of available registers.  If you want to debug it, see
ivopts_global_cost_for_size in tree-ssa-loop-ivopts.c and its callers;
perhaps, the issue is that it fails to account for IVs created in inner loops
when processing outer loops.

In any case, I recommend to create a bug report in the GCC bugzilla for this
problem.

Hope that helps,
Alexander


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