llvmc: Properly handle (error) in edge properties.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111827 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 3 insertions, 4 deletions

diff --git a/include/llvm/CompilerDriver/Common.td b/include/llvm/CompilerDriver/Common.td
index d378bb7..46c6078 100644
--- a/include/llvm/CompilerDriver/Common.td
+++ b/include/llvm/CompilerDriver/Common.td
@@ -93,9 +93,8 @@ def error;
 def set_option;
 def unset_option;
 
-// Increase/decrease the edge weight.
+// Increase the edge weight.
 def inc_weight;
-def dec_weight;
 
 // Empty DAG marker.
 def empty_dag_marker;
diff --git a/include/llvm/CompilerDriver/CompilationGraph.h b/include/llvm/CompilerDriver/CompilationGraph.h
index e3b0cff..619c904 100644
--- a/include/llvm/CompilerDriver/CompilationGraph.h
+++ b/include/llvm/CompilerDriver/CompilationGraph.h
@@ -46,7 +46,7 @@ namespace llvmc {
     virtual ~Edge() {}
 
     const std::string& ToolName() const { return ToolName_; }
-    virtual unsigned Weight(const InputLanguagesSet& InLangs) const = 0;
+    virtual int Weight(const InputLanguagesSet& InLangs) const = 0;
   private:
     std::string ToolName_;
   };
@@ -55,7 +55,7 @@ namespace llvmc {
   class SimpleEdge : public Edge {
   public:
     SimpleEdge(const std::string& T) : Edge(T) {}
-    unsigned Weight(const InputLanguagesSet&) const { return 1; }
+    int Weight(const InputLanguagesSet&) const { return 1; }
   };
 
   /// Node - A node (vertex) of the compilation graph.