Skip special LLVM prefix '1' while emitting linknage name.

This prefix is used by LLVM to inform the asm printer to not emit usual global symbol prefix before the symbol name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75875 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 25 insertions, 4 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 0e3b306aab..79d13291ba 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -785,10 +785,16 @@ DIE *DwarfDebug::CreateGlobalVariableDIE(CompileUnit *DW_Unit,
   AddString(GVDie, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
   std::string LinkageName;
   GV.getLinkageName(LinkageName);
-  if (!LinkageName.empty())
+  if (!LinkageName.empty()) {
+    // Skip special LLVM prefix that is used to inform the asm printer to not emit
+    // usual symbol prefix before the symbol name. This happens for Objective-C
+    // symbol names and symbol whose name is replaced using GCC's __asm__ attribute.
+    if (LinkageName[0] == 1)
+      LinkageName = &LinkageName[1];
     AddString(GVDie, dwarf::DW_AT_MIPS_linkage_name, dwarf::DW_FORM_string,
               LinkageName);
-  AddType(DW_Unit, GVDie, GV.getType());
+  }
+    AddType(DW_Unit, GVDie, GV.getType());
   if (!GV.isLocalToUnit())
     AddUInt(GVDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
   AddSourceLine(GVDie, &GV);
@@ -855,9 +861,15 @@ DIE *DwarfDebug::CreateSubprogramDIE(CompileUnit *DW_Unit,
 
   std::string LinkageName;
   SP.getLinkageName(LinkageName);
-  if (!LinkageName.empty())
+  if (!LinkageName.empty()) {
+    // Skip special LLVM prefix that is used to inform the asm printer to not emit
+    // usual symbol prefix before the symbol name. This happens for Objective-C
+    // symbol names and symbol whose name is replaced using GCC's __asm__ attribute.
+    if (LinkageName[0] == 1)
+      LinkageName = &LinkageName[1];
     AddString(SPDie, dwarf::DW_AT_MIPS_linkage_name, dwarf::DW_FORM_string,
               LinkageName);
+  }
   AddSourceLine(SPDie, &SP);
 
   DICompositeType SPTy = SP.getType();
@@ -2455,7 +2467,16 @@ void DwarfDebug::EmitDebugInlineInfo() {
     SP.getLinkageName(LName);
     SP.getName(Name);
 
-    Asm->EmitString(LName.empty() ? Name : LName);
+    if (LName.empty())
+      Asm->EmitString(Name);
+    else {
+      // Skip special LLVM prefix that is used to inform the asm printer to not emit
+      // usual symbol prefix before the symbol name. This happens for Objective-C
+      // symbol names and symbol whose name is replaced using GCC's __asm__ attribute.
+      if (LName[0] == 1)
+        LName = &LName[1];
+      Asm->EmitString(LName);
+    }
     Asm->EOL("MIPS linkage name");
 
     Asm->EmitString(Name); Asm->EOL("Function name");