Add optimization bisect opt-in calls for SystemZ passes

Differential Revision: http://reviews.llvm.org/D19562

llvm-svn: 267636
diff --git a/llvm/lib/Target/SystemZ/SystemZLDCleanup.cpp b/llvm/lib/Target/SystemZ/SystemZLDCleanup.cpp
index 24165be..ff81e6b 100644
--- a/llvm/lib/Target/SystemZ/SystemZLDCleanup.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZLDCleanup.cpp
@@ -64,6 +64,9 @@
 }
 
 bool SystemZLDCleanup::runOnMachineFunction(MachineFunction &F) {
+  if (skipFunction(*F.getFunction()))
+    return false;
+
   TII = static_cast<const SystemZInstrInfo *>(F.getSubtarget().getInstrInfo());
   MF = &F;