Include X86CallFrameOptimization in the opt-bisect process.

Differential Revision: https://reviews.llvm.org/D23683

llvm-svn: 279175
diff --git a/llvm/lib/Target/X86/X86CallFrameOptimization.cpp b/llvm/lib/Target/X86/X86CallFrameOptimization.cpp
index 986c406..176a6d25 100644
--- a/llvm/lib/Target/X86/X86CallFrameOptimization.cpp
+++ b/llvm/lib/Target/X86/X86CallFrameOptimization.cpp
@@ -225,7 +225,7 @@
   assert(isPowerOf2_32(SlotSize) && "Expect power of 2 stack slot size");
   Log2SlotSize = Log2_32(SlotSize);
 
-  if (!isLegal(MF))
+  if (skipFunction(*MF.getFunction()) || !isLegal(MF))
     return false;
 
   unsigned FrameSetupOpcode = TII->getCallFrameSetupOpcode();