Enabling the target-independent garbage collection infrastructure by hooking it

up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45669 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/AsmPrinter.h

@@ -118,6 +118,10 @@ namespace llvm {
     std::string getCurrentFunctionEHName(const MachineFunction *MF);
 
   protected:
+    /// getAnalysisUsage - Record analysis usage.
+    /// 
+    void getAnalysisUsage(AnalysisUsage &AU) const;
+    
     /// doInitialization - Set up the AsmPrinter when we are working on a new
     /// module.  If your pass overrides this, it must make sure to explicitly
     /// call this implementation.

include/llvm/CodeGen/SelectionDAGISel.h

@@ -30,6 +30,7 @@ namespace llvm {
   class TargetLowering;
   class FunctionLoweringInfo;
   class HazardRecognizer;
+  class CollectorMetadata;
  
 /// SelectionDAGISel - This is the common base class used for SelectionDAG-based
 /// pattern-matching instruction selectors.
@@ -42,10 +43,11 @@ public:
   AliasAnalysis *AA;
   std::vector<SDNode*> TopOrder;
   unsigned DAGSize;
+  CollectorMetadata *GCI;
   static char ID;
 
   explicit SelectionDAGISel(TargetLowering &tli) : 
-    FunctionPass((intptr_t)&ID), TLI(tli), DAGSize(0) {}
+    FunctionPass((intptr_t)&ID), TLI(tli), DAGSize(0), GCI(0) {}
   
   TargetLowering &getTargetLowering() { return TLI; }