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Commit 3f8ff044 authored by Owen Anderson's avatar Owen Anderson
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Fix a bug that was causing major slowdowns in povray. This was due to LCSSA 

not handling PHI nodes correctly when determining if a value was live-out.

This patch reduces the number of detected live-out variables in the testcase
from 6565 to 485.

llvm-svn: 28771
parent f570feea
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