Clement Courbet 8ef97e1aad [llvm-exegesis] Refactor how forbidden registers are computed. ...

Summary:
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.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68084

llvm-svn: 373048

2019-09-27 08:04:10 +00:00

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