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Re: cprop testing


	With the current version of the cprop optimization in CVS, my
bootstrap on AIX has a miscompare of every object file.  If I disable the
new cprop optimization, things work fine.

	I appreciate your efforts to fix this, but none of the follow-on
patches have resolved the bootstrap failure.  The bootstrap failure now is
different in that compiling expmed.c does not fail with an ICE, but
something still is wrong.

	I would like to ask that toplev.c be change to not include this
optimization algorithm in any default -Ox optimization levels until it is
fixed.  Having AIX bootstrap broken for four days with a known culprit is
too long.

Thanks, David


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