First draft of the OptionPreprocessor.

More to follow...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84352 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 19 insertions, 8 deletions

diff --git a/include/llvm/CompilerDriver/Common.td b/include/llvm/CompilerDriver/Common.td
index 5b7c543f1c..bffab59f3a 100644
--- a/include/llvm/CompilerDriver/Common.td
+++ b/include/llvm/CompilerDriver/Common.td
@@ -68,6 +68,8 @@ def not_empty;
 def default;
 def single_input_file;
 def multiple_input_files;
+def any_switch_on;
+def any_not_empty;
 
 // Possible actions.
 
@@ -76,7 +78,9 @@ def forward;
 def forward_as;
 def stop_compilation;
 def unpack_values;
+def warning;
 def error;
+def unset_option;
 
 // Increase/decrease the edge weight.
 def inc_weight;
@@ -90,11 +94,16 @@ class PluginPriority<int p> {
       int priority = p;
 }
 
-// Option list - used to specify aliases and sometimes help strings.
+// Option list - a single place to specify options.
 class OptionList<list<dag> l> {
       list<dag> options = l;
 }
 
+// Option preprocessor - actions taken during plugin loading.
+class OptionPreprocessor<dag d> {
+      dag preprocessor = d;
+}
+
 // Map from suffixes to language names
 
 class LangToSuffixes<string str, list<string> lst> {
diff --git a/include/llvm/CompilerDriver/Plugin.h b/include/llvm/CompilerDriver/Plugin.h
index 9f9eee3c0d..e9a20488a0 100644
--- a/include/llvm/CompilerDriver/Plugin.h
+++ b/include/llvm/CompilerDriver/Plugin.h
@@ -29,6 +29,11 @@ namespace llvmc {
     /// first.
     virtual int Priority() const { return 0; }
 
+    /// PreprocessOptions - The auto-generated function that performs various
+    /// consistency checks on options (like ensuring that -O2 and -O3 are not
+    /// used together).
+    virtual void PreprocessOptions() 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;
@@ -60,13 +65,10 @@ namespace llvmc {
     PluginLoader();
     ~PluginLoader();
 
-    /// PopulateLanguageMap - Fills in the language map by calling
-    /// PopulateLanguageMap methods of all plugins.
-    void PopulateLanguageMap(LanguageMap& langMap);
-
-    /// PopulateCompilationGraph - Populates the compilation graph by
-    /// calling PopulateCompilationGraph methods of all plugins.
-    void PopulateCompilationGraph(CompilationGraph& tools);
+    /// RunInitialization - Calls PreprocessOptions, PopulateLanguageMap and
+    /// PopulateCompilationGraph methods of all plugins. This populates the
+    /// global language map and the compilation graph.
+    void RunInitialization(LanguageMap& langMap, CompilationGraph& graph) const;
 
   private:
     // noncopyable