[PATCH] D127084: [MCA] Allow mca::Instruction-s to be recycled and reused

[Min-Yih Hsu via Phabricator via llvm-commits]

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This patch introduces a new feature that allows InstrBuilder to reuse mca::Instruction recycled from IncrementalSourceMgr. This significantly reduces the memory footprint.
Note that we're only recycling instructions that have static InstrDesc and no variadic operands.

This is patch 2/2 of MCA Daemon's upstreaming efforts.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127084

Files:
  llvm/include/llvm/MCA/IncrementalSourceMgr.h
  llvm/include/llvm/MCA/InstrBuilder.h
  llvm/include/llvm/MCA/Instruction.h
  llvm/lib/MCA/InstrBuilder.cpp
  llvm/unittests/tools/llvm-mca/X86/TestIncrementalMCA.cpp

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