Preston Gurd 94dc6540a8 Adds support for Atom Silvermont (SLM) - -march=slm ...

Implements Instruction scheduler latencies for Silvermont,
using latencies from the Intel Silvermont Optimization Guide.

Auto detects SLM.

Turns on post RA scheduler when generating code for SLM.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190717 91177308-0d34-0410-b5e6-96231b3b80d8

2013-09-13 19:23:28 +00:00

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