John Brawn eab960c46f [DAGCombiner] Fold together mul and shl when both are by a constant ...

This is intended to improve code generation for GEPs, as the index value is
shifted by the element size and in GEPs of multi-dimensional arrays the index
of higher dimensions is multiplied by the lower dimension size.

Differential Revision: http://reviews.llvm.org/D12197

llvm-svn: 245689

2015-08-21 10:48:17 +00:00

2.6 KiB

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