added support for implict operands in machine instruction

llvm-svn: 728

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp b/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
index b9fd0ffbe86..40ebf1e6bd3 100644
--- a/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
+++ b/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
@@ -66,6 +66,22 @@ void MethodLiveVarInfo::constructBBs()
     if(DEBUG_LV) 
       LVBB->printAllSets();
   }
+
+  // Since the PO iterator does not discover unreachable blocks,
+  // go over the random iterator and init those blocks as well.
+  // However, LV info is not correct for those blocks (they are not
+  // analyzed)
+
+  Method::const_iterator BBRI = Meth->begin();  // random iterator for BBs   
+
+  for( ; BBRI != Meth->end(); ++BBRI, ++POId) {     
+
+    if(   ! BB2BBLVMap[ *BBRI ] )
+      BB2BBLVMap[ *BBRI ] = new BBLiveVar( *BBRI, POId );
+
+  }
+
+
 }