[LLVMbugs] [Bug 9212] New: Missed feature in llvm::getLocationInfo (can't retrieve function's debugging information)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9212

           Summary: Missed feature in llvm::getLocationInfo (can't
                    retrieve function's debugging information)
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Global Analyses
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: art.oriented at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=6159)
 --> (http://llvm.org/bugs/attachment.cgi?id=6159)
My simple modification

'llvm::getLocationInfo' can't retrieve the dbg info of 'Function' (while
instructions and global variables are working) because it looks like that it
wasn't simply implemented yet. I don't have an access to update the patch, so
I'd like to let you know via this system.


Z:\dev\my-llvm\lib\Analysis>diff -u  DebugInfo.cpp DebugInfo_old.cpp
--- DebugInfo.cpp       2011-02-09 15:15:39 -0500
+++ DebugInfo_old.cpp   2011-02-13 23:19:27 -0500
@@ -1592,23 +1592,6 @@
   return 0;
 }

-/// Find the debug info descriptor corresponding to this function.
-static Value *findDbgSubprogramDeclare(Function *V) {
-  const Module *M = V->getParent();
-  NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.sp");
-  if (!NMD)
-    return 0;
-
-  for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
-    DIDescriptor DIG(cast<MDNode>(NMD->getOperand(i)));
-    if (!DIG.isSubprogram())
-      continue;
-    if (DISubprogram(DIG).getFunction() == V)
-      return DIG;
-  }
-  return 0;
-}
-
 /// Finds the llvm.dbg.declare intrinsic corresponding to this value if any.
 /// It looks through pointer casts too.
 static const DbgDeclareInst *findDbgDeclare(const Value *V) {
@@ -1646,17 +1629,6 @@

     StringRef D = Var.getDisplayName();
     if (!D.empty())
-      DisplayName = D;
-    LineNo = Var.getLineNumber();
-    Unit = Var.getCompileUnit();
-    TypeD = Var.getType();
-  } else if (Function *F = dyn_cast<Function>(const_cast<Value*>(V))){
-    Value *DIF = findDbgSubprogramDeclare(F);
-    if (!DIF) return false;
-    DISubprogram Var(cast<MDNode>(DIF));
-
-    StringRef D = Var.getDisplayName();
-    if (!D.empty())
       DisplayName = D;
     LineNo = Var.getLineNumber();
     Unit = Var.getCompileUnit();

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