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Commit 1d548d85 authored by Dan Gohman's avatar Dan Gohman
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Make BasicAliasAnalysis and Value::getUnderlyingObject use

GEPOperator's hasNoPointer0verflow(), and make a few places in instcombine
that create GEPs that may overflow clear the NoOverflow value. Among
other things, this partially addresses PR2831.

llvm-svn: 76252
parent 93668002
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