Switch over Transforms/Scalar to use the STATISTIC macro.  For each statistic
converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.

llvm-svn: 32690
diff --git a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
index 45a4899..603ba6a 100644
--- a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -36,9 +36,9 @@
 #include <algorithm>
 using namespace llvm;
 
-namespace {
-  Statistic NumUnrolled("loop-unroll", "Number of loops completely unrolled");
+STATISTIC(NumUnrolled, "Number of loops completely unrolled");
 
+namespace {
   cl::opt<unsigned>
   UnrollThreshold("unroll-threshold", cl::init(100), cl::Hidden,
                   cl::desc("The cut-off point for loop unrolling"));