[llvm-exegesis] Analysis: detect clustering inconsistencies.

Summary:
Warn on instructions that should have the same performance
characteristics according to the sched model but actually
differ in their benchmarks.

Next step: Make the display nicer to browse, I was thinking maybe html.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D46945

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332601 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed