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Re: Stepanov, PowerPC, life_analysis

>>>>> "Richard" == Richard Henderson <rth@redhat.com> writes:

    Richard> Yep.  CSE doesn't maintain the CFG while simplifying or
    Richard> eliminating branches, so rebuilding it is necessary.  You
    Richard> do want to add a call to cleanup_cfg though.  The flags
    Richard> to life_analysis are right.

Great.  To make sure I'm clear: I call cleanup_cfg right after
find_basic_blocks to blow away unreachable blocks entirely, right?

    Richard> I do suggest that we move this a bit earlier -- before
    Richard> the call to renumber_insns.

Yes, that makes sense.

I feel much better that you've confirmed the rightness here.  I'll
make the changes, retest the patch, and check it in.

Thanks,

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com
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