[dataflow]: patch committed to improve -O0 performance.

Paolo Bonzini paolo.bonzini@lu.unisi.ch
Wed Mar 28 16:48:00 GMT 2007


I'm wondering, many passes that use DF_LIVE could actually use
DF_LR.  If they sum up substantially, DF_UR/DF_LIVE could become
optional problems.

A nit:

> +/* Just run the sub passes which do all of the work.  */
> +static unsigned int
> +rest_of_handle_stack_regs (void)
> +{
> +  return 0;
> +}

Just put NULL in the tree_pass structure.

Paolo



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