[PATCH] D62163: [MachinePipeliner] Support resource tracking with InstrSchedModel

[Jinsong Ji via Phabricator via llvm-commits]

jsji created this revision.
jsji added reviewers: bcahoon, kparzysz, nemanjai, kbarton, hfinkel, steven.zhang.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

The current design  of MachinePipeliner use DFA to do resource tracking in SMS, 
but DFA only support InstrItins, and also has scaling limitation.

      

This patch extend SMS to allow Subtarget to use ProcResource in InstrSchedModel instead,
so that we can enable MachinePipeliner for PowerPC, 
which will be posted for review in following patch.


Repository:
  rL LLVM

https://reviews.llvm.org/D62163

Files:
  llvm/include/llvm/CodeGen/MachinePipeliner.h
  llvm/include/llvm/CodeGen/TargetSubtargetInfo.h
  llvm/lib/CodeGen/MachinePipeliner.cpp

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