1 files changed, 3 insertions, 7 deletions
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 570ed4aadab..167c05f9ef4 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -1012,17 +1012,13 @@ unsigned SwingSchedulerDAG::calculateResMII() {
     });
     for (unsigned C = 0; C < NumCycles; ++C)
       while (RI != RE) {
-        if ((*RI++)->canReserveResources(*MI)) {
+        if ((*RI)->canReserveResources(*MI)) {
+          (*RI)->reserveResources(*MI);
           ++ReservedCycles;
           break;
         }
+        RI++;
       }
-    // Start reserving resources using existing DFAs.
-    for (unsigned C = 0; C < ReservedCycles; ++C) {
-      --RI;
-      (*RI)->reserveResources(*MI);
-    }
-
     LLVM_DEBUG(dbgs() << "ReservedCycles:" << ReservedCycles
                       << ", NumCycles:" << NumCycles << "\n");
     // Add new DFAs, if needed, to reserve resources.