commit 3cf763dc7a9741c14432710943ab66b439562881
author Devang Patel <dpatel@apple.com> Wed Sep 29 23:07:21 2010 +0000
committer Devang Patel <dpatel@apple.com> Wed Sep 29 23:07:21 2010 +0000
tree b5d85ac49c63a6635450bd851141384b1bfc78dd
parent e487b017e94393ec4e90e8bb02818cab39190787

Let FE mark a variable as artificial variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115102 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/DebugInfo.cpp

diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index b168625..06a66d5 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -109,7 +109,9 @@
 }
 
 unsigned DIVariable::getNumAddrElements() const {
-  return DbgNode->getNumOperands()-6;
+  if (getVersion() <= llvm::LLVMDebugVersion8)
+    return DbgNode->getNumOperands()-6;
+  return DbgNode->getNumOperands()-7;
 }
 
 
@@ -1145,7 +1147,8 @@
                                      StringRef Name,
                                      DIFile F,
                                      unsigned LineNo,
-                                     DIType Ty, bool AlwaysPreserve) {
+                                     DIType Ty, bool AlwaysPreserve,
+                                     unsigned Flags) {
   Value *Elts[] = {
     GetTagConstant(Tag),
     Context,
@@ -1153,8 +1156,9 @@
     F,
     ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
     Ty,
+    ConstantInt::get(Type::getInt32Ty(VMContext), Flags)
   };
-  MDNode *Node = MDNode::get(VMContext, &Elts[0], 6);
+  MDNode *Node = MDNode::get(VMContext, &Elts[0], 7);
   if (AlwaysPreserve) {
     // The optimizer may remove local variable. If there is an interest
     // to preserve variable info in such situation then stash it in a

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index d3e343c..e6ac0eb 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1624,6 +1624,8 @@
 
   if (Tag == dwarf::DW_TAG_formal_parameter && DV->getType().isArtificial())
     addUInt(VariableDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
+  else if (DIVariable(DV->getVariable()).isArtificial())
+    addUInt(VariableDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
 
   if (Scope->isAbstractScope()) {
     DV->setDIE(VariableDie);