Support dependencies between plugins by priority-sorting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59449 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 0 deletions

diff --git a/include/llvm/CompilerDriver/Common.td b/include/llvm/CompilerDriver/Common.td
index e017326..4589f91 100644
--- a/include/llvm/CompilerDriver/Common.td
+++ b/include/llvm/CompilerDriver/Common.td
@@ -65,6 +65,11 @@ def or;
 def inc_weight;
 def dec_weight;
 
+// Used to specify plugin priority.
+class PluginPriority<int p> {
+      int priority = p;
+}
+
 // Option list - used to specify aliases and sometimes help strings.
 class OptionList<list<dag> l> {
       list<dag> options = l;
diff --git a/include/llvm/CompilerDriver/Plugin.h b/include/llvm/CompilerDriver/Plugin.h
index 1dc0df9..5426ac7 100644
--- a/include/llvm/CompilerDriver/Plugin.h
+++ b/include/llvm/CompilerDriver/Plugin.h
@@ -24,6 +24,11 @@ namespace llvmc {
   /// BasePlugin - An abstract base class for all LLVMC plugins.
   struct BasePlugin {
 
+    /// Priority - Plugin priority, useful for handling dependencies
+    /// between plugins. Plugins with lower priorities are loaded
+    /// first.
+    virtual int Priority() const = 0;
+
     /// PopulateLanguageMap - The auto-generated function that fills in
     /// the language map (map from file extensions to language names).
     virtual void PopulateLanguageMap(LanguageMap&) const = 0;