[PATCH] D68084: [llvm-exegesis] Refactor how forbidden registers are computed.

[Clement Courbet via Phabricator via llvm-commits]

courbet created this revision.
courbet added a reviewer: gchatelet.
Herald added a subscriber: tschuett.
Herald added a project: LLVM.

Right now latency generation can incorrectly select the scratch register
as a dependency-carrying register.

- Move the logic for preventing register selection from Uops implementation to common SnippetGenerator class.
- Aliasing detection now takes a set of forbidden registers just like random register assignment does.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D68084

Files:
  llvm/tools/llvm-exegesis/lib/Latency.cpp
  llvm/tools/llvm-exegesis/lib/Latency.h
  llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp
  llvm/tools/llvm-exegesis/lib/MCInstrDescView.h
  llvm/tools/llvm-exegesis/lib/SnippetGenerator.cpp
  llvm/tools/llvm-exegesis/lib/SnippetGenerator.h
  llvm/tools/llvm-exegesis/lib/Uops.cpp
  llvm/tools/llvm-exegesis/lib/Uops.h
  llvm/tools/llvm-exegesis/lib/X86/Target.cpp
  llvm/unittests/tools/llvm-exegesis/X86/SnippetGeneratorTest.cpp

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