Daniel Neilson 515e117e3a [AlignmentFromAssumptions] Set source and dest alignments of memory intrinsiscs separately ... Summary: This change is part of step five in the series of changes to remove alignment argument from memcpy/memmove/memset in favour of alignment attributes. In particular, this changes the AlignmentFromAssumptions pass to cease using the old getAlignment()/setAlignment API of MemoryIntrinsic in favour of getting/setting source & dest specific alignments through the new API. This allows us to simplify some of the code in this pass and also be more aggressive about setting the source and destination alignments separately. Steps: Step 1) Remove alignment parameter and create alignment parameter attributes for memcpy/memmove/memset. ( rL322965, rC322964, rL322963 ) Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing source and dest alignments. ( rL323597 ) Step 3) Update Clang to use the new IRBuilder API. ( rC323617 ) Step 4) Update Polly to use the new IRBuilder API. ( rL323618 ) Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API, and those that use use MemIntrinsicInst::[get|set]Alignment() to use [get|set]DestAlignment() and [get|set]SourceAlignment() instead. ( rL323886, rL323891, rL324148, rL324273, rL324278, rL324384, rL324395, rL324402, rL324626, rL324642, rL324653, rL324654, rL324773, rL324774, rL324781, rL324784, rL324955, rL324960 ) Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the MemIntrinsicInst::[get|set]Alignment() methods. Reference http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html Reviewers: hfinkel, bollu, reames Reviewed By: reames Subscribers: reames, llvm-commits Differential Revision: https://reviews.llvm.org/D43081 llvm-svn: 325816		2018-02-22 18:55:59 +00:00
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