R600/SI: Fix running SILowerI1Copies a second time

llvm-svn: 223204
diff --git a/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp b/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
index 80142f0..9fe97c8 100644
--- a/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
+++ b/llvm/lib/Target/R600/AMDGPUTargetMachine.cpp
@@ -157,10 +157,9 @@
   if (ST.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) {
     addPass(createSILowerI1CopiesPass());
     addPass(createSIFixSGPRCopiesPass(*TM));
+    addPass(createSIFoldOperandsPass());
   }
 
-  addPass(createSILowerI1CopiesPass());
-  addPass(createSIFoldOperandsPass());
   return false;
 }