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------------------------------------------------------------------------ r228525 | bsteinbr | 2015-02-08 09:07:14 -0800 (Sun, 08 Feb 2015) | 14 lines Correctly combine alias.scope metadata by a union instead of intersecting Summary: The alias.scope metadata represents sets of things an instruction might alias with. When generically combining the metadata from two instructions the result must be the union of the original sets, because the new instruction might alias with anything any of the original instructions aliased with. Reviewers: hfinkel Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D7490 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@228561 91177308-0d34-0410-b5e6-96231b3b80d8