[PeepholeOptimizer] Refactor the advanced copy optimization to take advantage of

[oota-llvm.git] / lib / CodeGen / Passes.cpp

diff --git a/lib/CodeGen/Passes.cpp b/lib/CodeGen/Passes.cpp
index bac0433dc8711aaa47e321fbee613c6c6694dcf3..319c2c865039829f05a43a91c9410a6f7f78010a 100644 (file)
--- a/lib/CodeGen/Passes.cpp
+++ b/lib/CodeGen/Passes.cpp
@@ -607,6 +607,9 @@ void TargetPassConfig::addMachineSSAOptimization() {
   printAndVerify("After Machine LICM, CSE and Sinking passes");
 
   addPass(&PeepholeOptimizerID);
+  // Clean-up the dead code that may have been generated by peephole
+  // rewriting.
+  addPass(&DeadMachineInstructionElimID);
   printAndVerify("After codegen peephole optimization pass");
 }