[DebugInfoMetadata] Added DIFlags interface in DIBasicType.

Flags in DIBasicType will be used to pass attributes used in
DW_TAG_base_type, such as DW_AT_endianity.

Patch by Chirag Patel!

Differential Revision: https://reviews.llvm.org/D49610

llvm-svn: 339714
diff --git a/llvm/lib/IR/DIBuilder.cpp b/llvm/lib/IR/DIBuilder.cpp
index 5c5477f..ee3323c 100644
--- a/llvm/lib/IR/DIBuilder.cpp
+++ b/llvm/lib/IR/DIBuilder.cpp
@@ -256,10 +256,11 @@
 }
 
 DIBasicType *DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
-                                        unsigned Encoding) {
+                                        unsigned Encoding,
+                                        DINode::DIFlags Flags) {
   assert(!Name.empty() && "Unable to create type without name");
   return DIBasicType::get(VMContext, dwarf::DW_TAG_base_type, Name, SizeInBits,
-                          0, Encoding);
+                          0, Encoding, Flags);
 }
 
 DIDerivedType *DIBuilder::createQualifiedType(unsigned Tag, DIType *FromTy) {