add Align field, and use when generating function alignment


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36371 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 625dd9d..6822e63 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -211,7 +211,7 @@
       O << Directive << CurrentFnName << "\n";
 
   if (AFI->isThumbFunction()) {
-    EmitAlignment(1, F);
+    EmitAlignment(AFI->getAlign(), F);
     O << "\t.code\t16\n";
     O << "\t.thumb_func";
     if (Subtarget->isTargetDarwin())