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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-30 21:16:22 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-30 21:16:22 +0000 |
| commit | 984cfe83228dddfee148d3668ef824b49fec137d (patch) | |
| tree | 39aef46db6f8006bf21e08ac8c0088da5cea2a07 | |
| parent | 7e9f6d7d58bde0102161c939200ff2019213256a (diff) | |
| download | bcm5719-llvm-984cfe83228dddfee148d3668ef824b49fec137d.tar.gz bcm5719-llvm-984cfe83228dddfee148d3668ef824b49fec137d.zip | |
Clarify invalidation strategy in comment.
llvm-svn: 160997
| -rw-r--r-- | llvm/lib/CodeGen/MachineTraceMetrics.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineTraceMetrics.h b/llvm/lib/CodeGen/MachineTraceMetrics.h index 56ea74ea85f..732e4f6ef39 100644 --- a/llvm/lib/CodeGen/MachineTraceMetrics.h +++ b/llvm/lib/CodeGen/MachineTraceMetrics.h @@ -211,6 +211,12 @@ public: /// Invalidate cached information about MBB. This must be called *before* MBB /// is erased, or the CFG is otherwise changed. + /// + /// This invalidates per-block information about resource usage for MBB only, + /// and it invalidates per-trace information for any trace that passes + /// through MBB. + /// + /// Call Ensemble::getTrace() again to update any trace handles. void invalidate(const MachineBasicBlock *MBB); private: |
