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Re: [tree-ssa] Fix bootstrap failure caused by tree-ssa-loop.c
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
- Cc: Andrew MacLeod <amacleod at redhat dot com>,law at redhat dot com,Diego Novillo <dnovillo at redhat dot com>,gcc-patches <gcc-patches at gcc dot gnu dot org>,Jan Hubicka <hubicka at ucw dot cz>
- Date: Thu, 11 Dec 2003 21:43:22 -0500
- Subject: Re: [tree-ssa] Fix bootstrap failure caused by tree-ssa-loop.c
- References: <200312111948.hBBJmL53024999@speedy.slc.redhat.com> <20031212000351.GA1181@atrey.karlin.mff.cuni.cz>
oops. Exactly the kind of problems I have expected when I have seen
you
have created another interface to the dominator information. IMHO it
would be better to just keep the original one from the dominance.c (I
know there are performance problems, but these are easy to fix).
Please fix them then.
It would let me remove about 100-200 lines of tree-ssa-pre.c.
If you want to see a performance problem, changed fast_a_dominates_b to
just use dominated_by_p, and compile 20001226-1.c, or any other large
testcase.
Wheee, calculate_value is fun.