AsmParser/Bitcode: Add support for MDLocation

This adds assembly and bitcode support for `MDLocation`.  The assembly
side is rather big, since this is the first `MDNode` subclass (that
isn't `MDTuple`).  Part of PR21433.

(If you're wondering where the mountains of testcase updates are, we
don't need them until I update `DILocation` and `DebugLoc` to actually
use this class.)

llvm-svn: 225830

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Bitcode/Writer/ValueEnumerator.h b/llvm/lib/Bitcode/Writer/ValueEnumerator.h
index e63394fefa5..d363c1be0dd 100644
--- a/llvm/lib/Bitcode/Writer/ValueEnumerator.h
+++ b/llvm/lib/Bitcode/Writer/ValueEnumerator.h
@@ -65,6 +65,7 @@ private:
   typedef DenseMap<const Metadata *, unsigned> MetadataMapType;
   MetadataMapType MDValueMap;
   bool HasMDString;
+  bool HasMDLocation;
 
   typedef DenseMap<AttributeSet, unsigned> AttributeGroupMapType;
   AttributeGroupMapType AttributeGroupMap;
@@ -111,6 +112,7 @@ public:
   unsigned getMetadataID(const Metadata *V) const;
 
   bool hasMDString() const { return HasMDString; }
+  bool hasMDLocation() const { return HasMDLocation; }
 
   unsigned getTypeID(Type *T) const {
     TypeMapType::const_iterator I = TypeMap.find(T);