3 files changed, 35 insertions, 28 deletions
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index 6be230e73a..08e5db2206 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -155,8 +155,10 @@ DILineInfo DWARFContext::getLineInfoForAddress(uint64_t address,
   if (specifier.needs(DILineInfoSpecifier::FunctionName)) {
     const DWARFDebugInfoEntryMinimal *function_die =
         cu->getFunctionDIEForAddress(address);
-    if (function_die)
-      functionName = function_die->getSubprogramName(cu);
+    if (function_die) {
+      if (const char *name = function_die->getSubprogramName(cu))
+        functionName = name;
+    }
   }
   if (specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
     // Get the line table for this compile unit.
diff --git a/lib/DebugInfo/DWARFDebugInfoEntry.cpp b/lib/DebugInfo/DWARFDebugInfoEntry.cpp
index 1024b45255..429a36c087 100644
--- a/lib/DebugInfo/DWARFDebugInfoEntry.cpp
+++ b/lib/DebugInfo/DWARFDebugInfoEntry.cpp
@@ -456,35 +456,38 @@ DWARFDebugInfoEntryMinimal::addressRangeContainsAddress(
   return false;
 }
 
-static inline const char*
-getSubprogramNameFromDie(const DWARFCompileUnit *cu,
-                         const DWARFDebugInfoEntryMinimal *die) {
-  const char *result = 0;
-  if (!die->isNULL() && die->getTag() == DW_TAG_subprogram) {
-    // Try to get mangled name if possible.
-    result = die->getAttributeValueAsString(cu, DW_AT_MIPS_linkage_name, 0);
-    if (result == 0)
-      result = die->getAttributeValueAsString(cu, DW_AT_linkage_name, 0);
-    if (result == 0)
-      result = die->getAttributeValueAsString(cu, DW_AT_name, 0);
-  }
-  return result;
-}
-
 const char*
 DWARFDebugInfoEntryMinimal::getSubprogramName(
     const DWARFCompileUnit *cu) const {
   if (isNULL() || getTag() != DW_TAG_subprogram)
     return 0;
-  const char *name = getSubprogramNameFromDie(cu, this);
-  if (name == 0) {
-    // Try to get name from specification DIE.
-    uint32_t ref = getAttributeValueAsReference(cu, DW_AT_specification, -1U);
-    if (ref != -1U) {
-      DWARFDebugInfoEntryMinimal spec_die;
-      if (spec_die.extract(cu, &ref))
-        name = getSubprogramNameFromDie(cu, &spec_die);
+  // Try to get mangled name if possible.
+  if (const char *name =
+      getAttributeValueAsString(cu, DW_AT_MIPS_linkage_name, 0))
+    return name;
+  if (const char *name = getAttributeValueAsString(cu, DW_AT_linkage_name, 0))
+    return name;
+  if (const char *name = getAttributeValueAsString(cu, DW_AT_name, 0))
+    return name;
+  // Try to get name from specification DIE.
+  uint32_t spec_ref =
+      getAttributeValueAsReference(cu, DW_AT_specification, -1U);
+  if (spec_ref != -1U) {
+    DWARFDebugInfoEntryMinimal spec_die;
+    if (spec_die.extract(cu, &spec_ref)) {
+      if (const char *name = spec_die.getSubprogramName(cu))
+        return name;
     }
   }
-  return name;
+  // Try to get name from abstract origin DIE.
+  uint32_t abs_origin_ref =
+      getAttributeValueAsReference(cu, DW_AT_abstract_origin, -1U);
+  if (abs_origin_ref != -1U) {
+    DWARFDebugInfoEntryMinimal abs_origin_die;
+    if (abs_origin_die.extract(cu, &abs_origin_ref)) {
+      if (const char *name = abs_origin_die.getSubprogramName(cu))
+        return name;
+    }
+  }
+  return 0;
 }
diff --git a/lib/DebugInfo/DWARFDebugInfoEntry.h b/lib/DebugInfo/DWARFDebugInfoEntry.h
index 1a040a53a3..d5d86b9ec0 100644
--- a/lib/DebugInfo/DWARFDebugInfoEntry.h
+++ b/lib/DebugInfo/DWARFDebugInfoEntry.h
@@ -132,8 +132,10 @@ public:
   bool addressRangeContainsAddress(const DWARFCompileUnit *cu,
                                    const uint64_t address) const;
 
-  // If a DIE represents a subroutine, returns its mangled name
-  // (or short name, if mangled is missing). Otherwise returns null.
+  // If a DIE represents a subprogram, returns its mangled name
+  // (or short name, if mangled is missing). This name may be fetched
+  // from specification or abstract origin for this subprogram.
+  // Returns null if no name is found.
   const char* getSubprogramName(const DWARFCompileUnit *cu) const;
 };