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[llvm-mca] Emit a message when no bottlenecks are identified.

Authored by mattd on Mar 7 2019, 9:01 AM.



Since bottleneck hints are enabled via user request, it can be
confusing if no bottleneck information is presented. Such is the
case when no bottlenecks are identified. This patch emits a message
in that case.

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mattd created this revision.Mar 7 2019, 9:01 AM
Herald added a project: Restricted Project. · View Herald TranscriptMar 7 2019, 9:01 AM
andreadb accepted this revision.Mar 7 2019, 11:01 AM

LGTM if you add flags -all-views=false -summary-view to that new test, and then you regenerate it with the update_mca script.

This revision is now accepted and ready to land.Mar 7 2019, 11:01 AM
This revision was automatically updated to reflect the committed changes.