Guozhi Wei 4d5bc87951 [PPC] Give unaligned memory access lower cost on processor that supports it
Newer ppc supports unaligned memory access, it reduces the cost of unaligned memory access significantly. This patch handles this case in PPCTTIImpl::getMemoryOpCost.

This patch fixes pr31492.

Differential Revision: https://reviews.llvm.org/D28630

This is resubmit of r292680, which was reverted by r293092. The internal application failures were actually caused by a source code bug.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295506 91177308-0d34-0410-b5e6-96231b3b80d8
2017-02-17 22:29:39 +00:00
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2015-07-26 19:10:03 +00:00