Add support to describe template parameter type in debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124752 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 28 insertions, 2 deletions

diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp
index c59e8285ff..14147b88f3 100644
--- a/lib/Analysis/DIBuilder.cpp
+++ b/lib/Analysis/DIBuilder.cpp
@@ -242,7 +242,7 @@ DIType DIBuilder::CreateClassType(DIDescriptor Context, StringRef Name,
                                   uint64_t SizeInBits, uint64_t AlignInBits,
                                   uint64_t OffsetInBits, unsigned Flags,
                                   DIType DerivedFrom, DIArray Elements,
-                                  MDNode *VTableHoder) {
+                                  MDNode *VTableHoder, MDNode *TemplateParams) {
  // TAG_class_type is encoded in DICompositeType format.
   Value *Elts[] = {
     GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
@@ -257,11 +257,31 @@ DIType DIBuilder::CreateClassType(DIDescriptor Context, StringRef Name,
     DerivedFrom,
     Elements,
     ConstantInt::get(Type::getInt32Ty(VMContext), 0),
-    VTableHoder
+    VTableHoder,
+    TemplateParams
   };
   return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
 }
 
+/// CreateTemplateTypeParameter - Create debugging information for template
+/// type parameter.
+DITemplateTypeParameter 
+DIBuilder::CreateTemplateTypeParameter(DIDescriptor Context, StringRef Name,
+                                       DIType Ty, MDNode *File, unsigned LineNo,
+                                       unsigned ColumnNo) {
+  Value *Elts[] = {
+    GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
+    Context,
+    MDString::get(VMContext, Name),
+    Ty,
+    File,
+    ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
+    ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
+  };
+  return DITemplateTypeParameter(MDNode::get(VMContext, &Elts[0], 
+                                             array_lengthof(Elts)));
+}
+
 /// CreateStructType - Create debugging information entry for a struct.
 DIType DIBuilder::CreateStructType(DIDescriptor Context, StringRef Name, 
                                    DIFile File, unsigned LineNumber, 
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 9e802c64b0..1aaa60ebd2 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -221,6 +221,12 @@ bool DIDescriptor::isScope() const {
   return false;
 }
 
+/// isTemplateTypeParameter - Return true if the specified tag is
+/// DW_TAG_template_type_parameter.
+bool DIDescriptor::isTemplateTypeParameter() const {
+  return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
+}
+
 /// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit.
 bool DIDescriptor::isCompileUnit() const {
   return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;