Commit message (Collapse) | Author | Age | Files | Lines | |
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* | [AliasAnalysis] Treat invariant.start as read-memory | Anna Thomas | 2016-08-09 | 1 | -0/+59 |
Summary: We teach alias analysis that invariant.start is readonly. This helps with GVN and memcopy optimizations that currently treat. invariant.start as a clobber. We need to treat this as readonly, so that DSE does not incorrectly remove stores prior to the invariant.start Reviewers: sanjoy, reames, majnemer, dberlin Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D23214 llvm-svn: 278138 |