An entry about packed type alignments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27321 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index be39096..6ac8e9e 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -149,4 +149,8 @@
where c1/c2 are constants.
+//===---------------------------------------------------------------------===//
+For packed types, TargetData.cpp::getTypeInfo() returns alignment that is equal
+to the type size. It works but can be overly conservative as the alignment of
+specific packed types are target dependent.