Factor out asmprinter out of ppc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54887 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/AsmPrinter/Makefile

@@ -0,0 +1,15 @@
+##===- lib/Target/X86/Makefile -----------------------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMPowerPCAsmPrinter
+
+# Hack: we need to include 'main' x86 target directory to grab private headers 
+CPPFLAGS = -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common

lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp

@@ -1117,3 +1117,11 @@ FunctionPass *llvm::createPPCAsmPrinterPass(std::ostream &o,
     return new PPCLinuxAsmPrinter(o, tm, tm.getTargetAsmInfo());
   }
 }
+
+namespace {
+  static struct Register {
+    Register() {
+      PPCTargetMachine::registerAsmPrinter(createPPCAsmPrinterPass);
+    }
+  } Registrator;
+}

lib/Target/PowerPC/Makefile

@@ -7,7 +7,7 @@
 # 
 ##===----------------------------------------------------------------------===##
 LEVEL = ../../..
-LIBRARYNAME = LLVMPowerPC
+LIBRARYNAME = LLVMPowerPCCodegen
 TARGET = PPC
 
 # Make sure that tblgen is run, first thing.
@@ -17,4 +17,6 @@ BUILT_SOURCES = PPCGenInstrNames.inc PPCGenRegisterNames.inc \
                 PPCGenInstrInfo.inc PPCGenDAGISel.inc \
                 PPCGenSubtarget.inc PPCGenCallingConv.inc
 
+DIRS = AsmPrinter
+
 include $(LEVEL)/Makefile.common

lib/Target/PowerPC/PPCTargetMachine.cpp

@@ -26,6 +26,9 @@ X("ppc32", "  PowerPC 32");
 static RegisterTarget<PPC64TargetMachine>
 Y("ppc64", "  PowerPC 64");
 
+// No assembler printer by default
+PPCTargetMachine::AsmPrinterCtorFn PPCTargetMachine::AsmPrinterCtor = 0;
+
 const TargetAsmInfo *PPCTargetMachine::createTargetAsmInfo() const {
   if (Subtarget.isDarwin())
     return new PPCDarwinTargetAsmInfo(*this);
@@ -132,7 +135,10 @@ bool PPCTargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
 
 bool PPCTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast, 
                                           std::ostream &Out) {
-  PM.add(createPPCAsmPrinterPass(Out, *this));
+  assert(AsmPrinterCtor && "AsmPrinter was not linked in");
+  if (AsmPrinterCtor)
+    PM.add(AsmPrinterCtor(Out, *this));
+
   return false;
 }
 
@@ -158,8 +164,12 @@ bool PPCTargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
   
   // Machine code emitter pass for PowerPC.
   PM.add(createPPCCodeEmitterPass(*this, MCE));
-  if (DumpAsm) 
-    PM.add(createPPCAsmPrinterPass(*cerr.stream(), *this));
+  if (DumpAsm) {
+    assert(AsmPrinterCtor && "AsmPrinter was not linked in");
+    if (AsmPrinterCtor)
+      PM.add(AsmPrinterCtor(*cerr.stream(), *this));
+  }
+
   return false;
 }
 
@@ -167,7 +177,11 @@ bool PPCTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
                                             bool DumpAsm, MachineCodeEmitter &MCE) {
   // Machine code emitter pass for PowerPC.
   PM.add(createPPCCodeEmitterPass(*this, MCE));
-  if (DumpAsm) 
-    PM.add(createPPCAsmPrinterPass(*cerr.stream(), *this));
+  if (DumpAsm) {
+    assert(AsmPrinterCtor && "AsmPrinter was not linked in");
+    if (AsmPrinterCtor)
+      PM.add(AsmPrinterCtor(*cerr.stream(), *this));
+  }
+
   return false;
 }

lib/Target/PowerPC/PPCTargetMachine.h

@@ -41,7 +41,13 @@ class PPCTargetMachine : public LLVMTargetMachine {
 
 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)(std::ostream &o,
+                                            PPCTargetMachine &tm);
+  static AsmPrinterCtorFn AsmPrinterCtor;
+
 public:
   PPCTargetMachine(const Module &M, const std::string &FS, bool is64Bit);
 
@@ -63,7 +69,11 @@ public:
   virtual const PPCMachOWriterInfo *getMachOWriterInfo() const {
     return &MachOWriterInfo;
   }
-  
+
+  static void registerAsmPrinter(AsmPrinterCtorFn F) {
+    AsmPrinterCtor = F;
+  }
+
   // Pass Pipeline Configuration
   virtual bool addInstSelector(PassManagerBase &PM, bool Fast);
   virtual bool addPreEmitPass(PassManagerBase &PM, bool Fast);