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Commit 0be8c2b0 authored by Dan Gohman's avatar Dan Gohman
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Make isSafeToClobberEFLAGS more aggressive. Teach it to scan backwards 

(for uses marked kill and defs marked dead) a few instructions in
addition to forwards. Also, increase the maximum number of instructions
to scan, as it appears to help in a fair number of cases.

llvm-svn: 84061
parent df777ede
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