[PATCH] D48270: [ARM] Check for unaligned access via bitcasts

[Eli Friedman via Phabricator via llvm-commits]

efriedma requested changes to this revision.
efriedma added a comment.
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In IR, if a pointer operand doesn't have the alignment given by the "align" annotation, the behavior is undefined.  (If you don't explicitly specify the alignment, it defaults to the alignment specified in the DataLayout.)  Similarly, in a MachineFunction, if a memory operation accesses an address which doesn't have the alignment given in the MMO, the behavior is undefined.

Looking at ARMParallelDSP::CreateSMLADCall in https://reviews.llvm.org/D48128, it looks like you forgot to set the alignment on the loads you're creating.


https://reviews.llvm.org/D48270