Release build: guard dump functions with "ifndef NDEBUG"

No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163339 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index 955c75a..9d5de81 100644
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -171,6 +171,7 @@
     // Shuffle live registers to match the expectations of successor blocks.
     void finishBlockStack();
 
+#ifndef NDEBUG
     void dumpStack() const {
       dbgs() << "Stack contents:";
       for (unsigned i = 0; i != StackTop; ++i) {
@@ -181,6 +182,7 @@
         dbgs() << ", ST" << i << " in FP" << unsigned(PendingST[i]);
       dbgs() << "\n";
     }
+#endif
 
     /// getSlot - Return the stack slot number a particular register number is
     /// in.