Tim Northover b94a353242 ARM: Add Performance Monitor Extensions feature ...

Performance monitors, including a basic cycle counter, are an official
extension in the ARMv7 specification. This adds support for enabling and
disabling them, orthogonally from CPU selection.

rdar://problem/13939186

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182602 91177308-0d34-0410-b5e6-96231b3b80d8

2013-05-23 19:11:14 +00:00

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