Unbreak cyclic deps

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73781 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 30 insertions, 12 deletions

diff --git a/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp b/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
index 11214e894c..504b465eb3 100644
--- a/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
+++ b/lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
@@ -627,3 +627,11 @@ FunctionPass *llvm::createSPUAsmPrinterPass(raw_ostream &o,
 namespace llvm {
   void InitializeCellSPUAsmPrinter() { }
 }
+
+namespace {
+  static struct Register {
+    Register() {
+      SPUTargetMachine::registerAsmPrinter(createSPUAsmPrinterPass);
+    }
+  } Registrator;
+}
diff --git a/lib/Target/CellSPU/SPUTargetMachine.cpp b/lib/Target/CellSPU/SPUTargetMachine.cpp
index a1e843c126..c675ebb09a 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.cpp
+++ b/lib/Target/CellSPU/SPUTargetMachine.cpp
@@ -23,20 +23,15 @@
 
 using namespace llvm;
 
-/// CellSPUTargetMachineModule - Note that this is used on hosts that
-/// cannot link in a library unless there are references into the
-/// library.  In particular, it seems that it is not possible to get
-/// things to work on Win32 without this.  Though it is unused, do not
-/// remove it.
-extern "C" int CellSPUTargetMachineModule;
-int CellSPUTargetMachineModule = 0;
-
 namespace {
   // Register the targets
   RegisterTarget<SPUTargetMachine>
   CELLSPU("cellspu", "STI CBEA Cell SPU [experimental]");
 }
 
+// No assembler printer by default
+SPUTargetMachine::AsmPrinterCtorFn SPUTargetMachine::AsmPrinterCtor = 0;
+
 // Force static initialization when called from llvm/InitializeAllTargets.h
 namespace llvm {
   void InitializeCellSPUTarget() { }
@@ -98,6 +93,9 @@ bool SPUTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
                                           CodeGenOpt::Level OptLevel,
                                           bool Verbose,
                                           raw_ostream &Out) {
-  PM.add(createSPUAsmPrinterPass(Out, *this, OptLevel, Verbose));
+  // Output assembly language.
+  assert(AsmPrinterCtor && "AsmPrinter was not linked in");
+  if (AsmPrinterCtor)
+    PM.add(AsmPrinterCtor(Out, *this, OptLevel, Verbose));
   return false;
 }
diff --git a/lib/Target/CellSPU/SPUTargetMachine.h b/lib/Target/CellSPU/SPUTargetMachine.h
index cd39203338..d8fe3000d9 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.h
+++ b/lib/Target/CellSPU/SPUTargetMachine.h
@@ -35,10 +35,18 @@ class SPUTargetMachine : public LLVMTargetMachine {
   SPUFrameInfo        FrameInfo;
   SPUTargetLowering   TLInfo;
   InstrItineraryData  InstrItins;
-  
+
 protected:
   virtual const TargetAsmInfo *createTargetAsmInfo() const;
-  
+
+  // To avoid having target depend on the asmprinter stuff libraries, asmprinter
+  // set this functions to ctor pointer at startup time if they are linked in.
+  typedef FunctionPass *(*AsmPrinterCtorFn)(raw_ostream &o,
+                                            SPUTargetMachine &tm,
+                                            CodeGenOpt::Level OptLevel,
+                                            bool verbose);
+  static AsmPrinterCtorFn AsmPrinterCtor;
+
 public:
   SPUTargetMachine(const Module &M, const std::string &FS);
 
@@ -78,7 +86,7 @@ public:
     return &DataLayout;
   }
 
-  virtual const InstrItineraryData getInstrItineraryData() const {  
+  virtual const InstrItineraryData getInstrItineraryData() const {
     return InstrItins;
   }
   
@@ -88,6 +96,10 @@ public:
   virtual bool addAssemblyEmitter(PassManagerBase &PM,
                                   CodeGenOpt::Level OptLevel,
                                   bool Verbose, raw_ostream &Out);
+
+  static void registerAsmPrinter(AsmPrinterCtorFn F) {
+    AsmPrinterCtor = F;
+  }
 };
 
 } // end namespace llvm