Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp
index 7d7f33e..a77ccb7 100644
--- a/lib/CodeGen/IfConversion.cpp
+++ b/lib/CodeGen/IfConversion.cpp
@@ -56,7 +56,7 @@
 STATISTIC(NumDupBBs,       "Number of duplicated blocks");
 
 namespace {
-  class IfConverter : public MachineFunctionPass {
+  class VISIBILITY_HIDDEN IfConverter : public MachineFunctionPass {
     enum IfcvtKind {
       ICNotClassfied,  // BB data valid, but not classified.
       ICSimpleFalse,   // Same as ICSimple, but on the false path.