Index: llvm/trunk/lib/CodeGen/MachineSink.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/MachineSink.cpp
+++ llvm/trunk/lib/CodeGen/MachineSink.cpp
@@ -948,6 +948,11 @@
   PostRAMachineSinking() : MachineFunctionPass(ID) {}
   StringRef getPassName() const override { return "PostRA Machine Sink"; }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
+
 private:
   /// Track which registers have been modified and used.
   BitVector ModifiedRegs, UsedRegs;
Index: llvm/trunk/test/CodeGen/X86/O3-pipeline.ll
===================================================================
--- llvm/trunk/test/CodeGen/X86/O3-pipeline.ll
+++ llvm/trunk/test/CodeGen/X86/O3-pipeline.ll
@@ -120,8 +120,6 @@
 ; CHECK-NEXT:       Bundle Machine CFG Edges
 ; CHECK-NEXT:       X86 FP Stackifier
 ; CHECK-NEXT:       PostRA Machine Sink
-; CHECK-NEXT:       MachineDominator Tree Construction
-; CHECK-NEXT:       Machine Natural Loop Construction
 ; CHECK-NEXT:       Machine Block Frequency Analysis
 ; CHECK-NEXT:       MachinePostDominator Tree Construction
 ; CHECK-NEXT:       Shrink Wrapping analysis