Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index 726869a..b2a7312 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -50,7 +50,7 @@
 STATISTIC(NumDeadSpills, "Number of dead spills removed");
 
 namespace {
-  class VISIBILITY_HIDDEN PreAllocSplitting : public MachineFunctionPass {
+  class PreAllocSplitting : public MachineFunctionPass {
     MachineFunction       *CurrMF;
     const TargetMachine   *TM;
     const TargetInstrInfo *TII;