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basicaa returns noalias for aliasing pointers, miscompiles MiBench/consumer-typeset #1481

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lattner opened this issue Jan 14, 2007 · 2 comments
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basicaa returns noalias for aliasing pointers, miscompiles MiBench/consumer-typeset #1481

lattner opened this issue Jan 14, 2007 · 2 comments
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bugzilla Issues migrated from bugzilla miscompilation

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lattner commented Jan 14, 2007

Bugzilla Link 1109
Resolution FIXED
Resolved on Feb 22, 2010 12:47
Version 1.0
OS All
Attachments failing testcase

Extended Description

In the attached heavily reduced testcase, basicaa returns noaa for two pointers that overlap. This causes
miscompilation of consumer-typeset.

-Chris
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lattner commented Jan 14, 2007

assigned to @lattner

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lattner commented Jan 14, 2007

Fixed. Testcase here: Analysis/BasicAA/2007-01-13-BasePointerBadNoAlias.ll

Patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070108/042647.html

-Chris

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
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