Added initial support for DEBUG_LABEL allowing debug specific labels to be
inserted in the code.

llvm-svn: 25104
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 01d8f07..8eb4ac3 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -94,8 +94,11 @@
   // PowerPC does not have truncstore for i1.
   setOperationAction(ISD::TRUNCSTORE, MVT::i1, Promote);
 
-  // PowerPC doesn't have line number support yet.
+  // Support label based line numbers.
   setOperationAction(ISD::LOCATION, MVT::Other, Expand);
+  // FIXME - use subtarget debug flags
+  if (TM.getSubtarget<PPCSubtarget>().isDarwin())
+    setOperationAction(ISD::DEBUG_LABEL, MVT::Other, Expand);
   
   // We want to legalize GlobalAddress and ConstantPool nodes into the 
   // appropriate instructions to materialize the address.