[llvm-mca] Move DispatchStage::cycleEvent to preExecute. NFC.
Summary:
This is an intermediate change, it moves the non-notification logic from
Backend::notifyCycleBegin to runCycle().
Once the scheduler becomes part of the Execution stage
the explicit call to Scheduler::cycleEvent will disappear.
The logic for Dispatch::cycleEvent() can be in
the preExecute phase, which this patch addresses.
Reviewers: andreadb, RKSimon, courbet
Reviewed By: andreadb
Subscribers: tschuett, gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D47213
llvm-svn: 333029
diff --git a/llvm/tools/llvm-mca/Backend.cpp b/llvm/tools/llvm-mca/Backend.cpp
index 7c46699..9077b6e 100644
--- a/llvm/tools/llvm-mca/Backend.cpp
+++ b/llvm/tools/llvm-mca/Backend.cpp
@@ -38,6 +38,9 @@
notifyCycleBegin(Cycle);
InstRef IR;
+ Dispatch->preExecute(IR);
+ HWS->cycleEvent(); // TODO: This will eventually be stage-ified.
+
while (Fetch->execute(IR)) {
if (!Dispatch->execute(IR))
break;
@@ -51,9 +54,6 @@
LLVM_DEBUG(dbgs() << "[E] Cycle begin: " << Cycle << '\n');
for (HWEventListener *Listener : Listeners)
Listener->onCycleBegin();
-
- Dispatch->cycleEvent();
- HWS->cycleEvent();
}
void Backend::notifyInstructionEvent(const HWInstructionEvent &Event) {