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Commit bc5c524b authored by Pete Cooper's avatar Pete Cooper
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Added instcombine pattern to spot comparing -val or val against 0. 

(val != 0) == (-val != 0) so "abs(val) != 0" becomes "val != 0"

Fixes <rdar://problem/10482509>

llvm-svn: 145563
parent b1a02922
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