[arcmt] Merge 'removeEmptyStatements' and 'removeDeallocMethod' passes to cut down on one compilation
pass and increase migration speed.

llvm-svn: 133540
diff --git a/clang/lib/ARCMigrate/Transforms.cpp b/clang/lib/ARCMigrate/Transforms.cpp
index 0650e3b..3c2e3fc 100644
--- a/clang/lib/ARCMigrate/Transforms.cpp
+++ b/clang/lib/ARCMigrate/Transforms.cpp
@@ -224,12 +224,9 @@
 std::vector<TransformFn> arcmt::getAllTransformations() {
   std::vector<TransformFn> transforms;
 
-  // This must come first since rewriteAutoreleasePool depends on -release
-  // calls being present to determine the @autorelease ending scope.
   transforms.push_back(independentTransforms);
-
-  transforms.push_back(removeEmptyStatements);
-  transforms.push_back(removeDeallocMethod);
+  // This depends on previous transformations removing various expressions.
+  transforms.push_back(removeEmptyStatementsAndDealloc);
 
   return transforms;
 }