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Memcpy, and other memory intrinsics, typically tries to use LDM/STM if the source and target addresses are 4-byte aligned. In CodeGenPrepare look for calls to memory intrinsics and, if the object is on the stack, 4-byte align it if it's large enough that we expect that memcpy would want to use LDM/STM to copy it. Differential Revision: http://reviews.llvm.org/D7908 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232627 91177308-0d34-0410-b5e6-96231b3b80d8 |
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llvm-c |