Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54881 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/OcamlGC.cpp

@@ -0,0 +1,46 @@
+//===-- OcamlCollector.cpp - Ocaml frametable emitter ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements lowering for the llvm.gc* intrinsics compatible with
+// Objective Caml 3.10.0, which uses a liveness-accurate static stack map.
+//
+//===----------------------------------------------------------------------===//
+                        
+#include "llvm/CodeGen/GCs.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/GCStrategy.h"
+#include "llvm/Module.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
+
+using namespace llvm;
+
+namespace {
+
+  class VISIBILITY_HIDDEN OcamlCollector : public Collector {
+  public:
+    OcamlCollector();
+  };
+  
+}
+
+static CollectorRegistry::Add<OcamlCollector>
+X("ocaml", "ocaml 3.10-compatible collector");
+
+// -----------------------------------------------------------------------------
+
+Collector *llvm::createOcamlCollector() {
+  return new OcamlCollector();
+}
+
+OcamlCollector::OcamlCollector() {
+  NeededSafePoints = 1 << GC::PostCall;
+  UsesMetadata = true;
+}