Add a missing pass in ARM O3 pipeline

llvm-svn: 373382

Author: kuhar

llvm/test/CodeGen/ARM/O3-pipeline.ll

@@ -113,6 +113,7 @@
 ; CHECK-NEXT:      Machine Loop Invariant Code Motion
 ; CHECK-NEXT:      PostRA Machine Sink
 ; CHECK-NEXT:      Machine Block Frequency Analysis
+; CHECK-NEXT:      MachineDominator Tree Construction
 ; CHECK-NEXT:      MachinePostDominator Tree Construction
 ; CHECK-NEXT:      Lazy Machine Block Frequency Analysis
 ; CHECK-NEXT:      Machine Optimization Remark Emitter