[PATCH] D100334: [CSSPGO] Exclude pseudo probes from slot index

[Hongtao Yu via Phabricator via llvm-commits]

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Pseudo probe are currently given a slot index like other regular instructions. This affects register pressure and lifetime weight computation because of enlarged lifetime length with pseudo probe instructions. As a consequence, program could get different code generated w/ and w/o pseudo probes. I'm closing the gap by excluding pseudo probes from stack index and downstream register allocation related passes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100334

Files:
  llvm/lib/CodeGen/LiveDebugVariables.cpp
  llvm/lib/CodeGen/LiveIntervals.cpp
  llvm/lib/CodeGen/LiveRangeShrink.cpp
  llvm/lib/CodeGen/LiveVariables.cpp
  llvm/lib/CodeGen/MachineBasicBlock.cpp
  llvm/lib/CodeGen/MachineScheduler.cpp
  llvm/lib/CodeGen/MachineSink.cpp
  llvm/lib/CodeGen/RegAllocGreedy.cpp
  llvm/lib/CodeGen/RegisterCoalescer.cpp
  llvm/lib/CodeGen/RegisterPressure.cpp
  llvm/lib/CodeGen/RegisterScavenging.cpp
  llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
  llvm/lib/CodeGen/SlotIndexes.cpp
  llvm/lib/CodeGen/SplitKit.cpp
  llvm/test/Transforms/SampleProfile/pseudo-probe-slotindex.ll

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