Zheng Chen 04377a81ae [Powerpc] set instruction count as lsr first priority of lsr. ...

On Powerpc, set instruction count as lsr first priority of lsr by default.
Add an option ppc-lsr-no-insns-cost to return back to default lsr cost model.

Reviewed By: steven.zhang, jsji

Differential Revision: https://reviews.llvm.org/D72683

2020-02-16 21:04:55 -05:00

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