[llvm-mca] Minor refactoring. NFCI

Also, removed a couple of unused methods from class Instruction.

llvm-svn: 328198

1 files changed, 3 insertions, 10 deletions

diff --git a/llvm/tools/llvm-mca/Scheduler.cpp b/llvm/tools/llvm-mca/Scheduler.cpp
index 70b073b46e7..08ddf6ebe7d 100644
--- a/llvm/tools/llvm-mca/Scheduler.cpp
+++ b/llvm/tools/llvm-mca/Scheduler.cpp
@@ -260,16 +260,9 @@ void Scheduler::scheduleInstruction(unsigned Idx, Instruction &MCIS) {
     notifyReservedBuffers(Desc.Buffers);
   }
 
-  bool MayLoad = Desc.MayLoad;
-  bool MayStore = Desc.MayStore;
-  if (MayLoad || MayStore)
-    LSU->reserve(Idx, MayLoad, MayStore, Desc.HasSideEffects);
-
-  bool IsReady = MCIS.isReady();
-  if (IsReady && (MayLoad || MayStore))
-    IsReady &= LSU->isReady(Idx);
-
-  if (!IsReady) {
+  // If necessary, reserve queue entries in the load-store unit (LSU).
+  bool Reserved = LSU->reserve(Idx, Desc);
+  if (!MCIS.isReady() || (Reserved && !LSU->isReady(Idx))) {
     DEBUG(dbgs() << "[SCHEDULER] Adding " << Idx << " to the Wait Queue\n");
     WaitQueue[Idx] = &MCIS;
     return;