[GC] Simplify linking of GC builtin GC strategies

llvm-svn: 346569

include/llvm/CodeGen/GCs.h

@@ -15,32 +15,18 @@
 #define LLVM_CODEGEN_GCS_H
 
 namespace llvm {
-class GCStrategy;
-class GCMetadataPrinter;
 
 /// FIXME: Collector instances are not useful on their own. These no longer
 ///        serve any purpose except to link in the plugins.
 
-/// Creates a CoreCLR-compatible garbage collector.
-void linkCoreCLRGC();
-
-/// Creates an ocaml-compatible garbage collector.
-void linkOcamlGC();
+/// Ensure the definition of the builtin GCs gets linked in
+void linkAllBuiltinGCs();
 
 /// Creates an ocaml-compatible metadata printer.
 void linkOcamlGCPrinter();
 
-/// Creates an erlang-compatible garbage collector.
-void linkErlangGC();
-
 /// Creates an erlang-compatible metadata printer.
 void linkErlangGCPrinter();
-
-/// Creates a shadow stack garbage collector. This collector requires no code
-/// generator support.
-void linkShadowStackGC();
-
-void linkStatepointExampleGC();
 }
 
 #endif

include/llvm/CodeGen/LinkAllCodegenComponents.h

@@ -36,11 +36,7 @@ namespace {
       (void) llvm::createGreedyRegisterAllocator();
       (void) llvm::createDefaultPBQPRegisterAllocator();
 
-      llvm::linkCoreCLRGC();
-      llvm::linkOcamlGC();
-      llvm::linkErlangGC();
-      llvm::linkShadowStackGC();
-      llvm::linkStatepointExampleGC();
+      llvm::linkAllBuiltinGCs();
 
       (void) llvm::createBURRListDAGScheduler(nullptr,
                                               llvm::CodeGenOpt::Default);

lib/CodeGen/BuiltinGCs.cpp

@@ -136,9 +136,5 @@ static GCRegistry::Add<StatepointGC> D("statepoint-example",
                                        "an example strategy for statepoint");
 static GCRegistry::Add<CoreCLRGC> E("coreclr", "CoreCLR-compatible GC");
 
-// Provide hooks to ensure the containing library is fully loaded.
-void llvm::linkErlangGC() {}
-void llvm::linkOcamlGC() {}
-void llvm::linkShadowStackGC() {}
-void llvm::linkStatepointExampleGC() {}
-void llvm::linkCoreCLRGC() {}
+// Provide hook to ensure the containing library is fully loaded.
+void llvm::linkAllBuiltinGCs() {}