[llvm-commits] [llvm] r121061 - /llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

[Devang Patel]

Author: dpatel
Date: Mon Dec  6 16:48:22 2010
New Revision: 121061

URL: http://llvm.org/viewvc/llvm-project?rev=121061&view=rev
Log:
Undefined value in reg 0 may need a marker to identify end of source range.
This will be used to truncate live range of DBG_VALUE instruction by register allocator and friends.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=121061&r1=121060&r2=121061&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Mon Dec  6 16:48:22 2010
@@ -2783,16 +2783,14 @@
         DIVariable DV(MI->getOperand(MI->getNumOperands() - 1).getMetadata());
         if (!DV.Verify()) continue;
         // If DBG_VALUE is for a local variable then it needs a label.
-        if (DV.getTag() != dwarf::DW_TAG_arg_variable
-            && isDbgValueInUndefinedReg(MI) == false)
+        if (DV.getTag() != dwarf::DW_TAG_arg_variable)
           InsnNeedsLabel.insert(MI);
         // DBG_VALUE for inlined functions argument needs a label.
         else if (!DISubprogram(getDISubprogram(DV.getContext())).
                  describes(MF->getFunction()))
           InsnNeedsLabel.insert(MI);
         // DBG_VALUE indicating argument location change needs a label.
-        else if (isDbgValueInUndefinedReg(MI) == false
-                 && !ProcessedArgs.insert(DV))
+        else if (!ProcessedArgs.insert(DV))
           InsnNeedsLabel.insert(MI);
       } else {
         // If location is unknown then instruction needs a location only if