From: Devang Patel <dpatel@apple.com>
Date: Wed, 29 Sep 2010 23:09:21 +0000 (+0000)
Subject: Attach aritifical attribute with implicit parameters.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=aca745b8b2eb58dc149ea7e65dfe133df2b0ab93;p=clang

Attach aritifical attribute with implicit parameters.
Radar 8493141.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115104 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index e2ad3e1b56..45a887b1bb 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -1729,12 +1729,15 @@ void CGDebugInfo::EmitDeclare(const VarDecl *VD, unsigned Tag,
   // Get location information.
   unsigned Line = getLineNumber(VD->getLocation());
   unsigned Column = getColumnNumber(VD->getLocation());
-
+  unsigned Flags = 0;
+  if (VD->isImplicit())
+    Flags |= llvm::DIDescriptor::FlagArtificial;
   // Create the descriptor for the variable.
   llvm::DIVariable D =
     DebugFactory.CreateVariable(Tag, llvm::DIDescriptor(RegionStack.back()),
-                                VD->getName(),
-                                Unit, Line, Ty, CGM.getLangOptions().Optimize);
+                                VD->getName(), Unit, Line, Ty, 
+                                CGM.getLangOptions().Optimize, Flags);
+
   // Insert an llvm.dbg.declare into the current block.
   llvm::Instruction *Call =
     DebugFactory.InsertDeclare(Storage, D, Builder.GetInsertBlock());
diff --git a/test/CodeGenObjC/debug-info-self.m b/test/CodeGenObjC/debug-info-self.m
new file mode 100644
index 0000000000..9146ab3973
--- /dev/null
+++ b/test/CodeGenObjC/debug-info-self.m
@@ -0,0 +1,16 @@
+// RUN: %clang -fverbose-asm -g -S %s -o - | grep DW_AT_artificial | count 3
+// self and _cmd are marked as DW_AT_artificial. 
+// abbrev code emits another DT_artificial comment.
+// myarg is not marked as DW_AT_artificial.
+
+@interface MyClass {
+}
+- (id)init:(int) myarg;
+@end
+
+@implementation MyClass
+- (id) init:(int) myarg
+{
+    return self;
+}
+@end