Quentin Colombet 1615d1720e [DAGCombiner] Fix the type used in canFoldInAddressingMode to account for the
right scaling.

In the function canFoldInAddressingMode, VT is computed as the type of the
destination/source of a LOAD/STORE operations, instead of the memory type of the
operation.
On targets with a scaling factor on the offset of the LOAD/STORE operations, the
function may return false for actually valid cases. This may then prevent the
selection of profitable pre or post indexed load/store operations, and instead
select pre or post indexed load/store for unprofitable cases.

Patch by Francois de Ferriere <francois.de-ferriere@st.com>!

Differential Revision: http://reviews.llvm.org/D9146


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235780 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-24 21:28:00 +00:00
2015-03-12 01:25:29 +00:00

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