Initial implementation of the asmprinter base class

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15838 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/AsmPrinter.h

@@ -0,0 +1,65 @@
+//===-- llvm/CodeGen/AsmPrinter.h - AsmPrinter Framework --------*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This class is intended to be used as a base class for target-specific
+// asmwriters.  This class primarily takes care of printing global constants,
+// which are printed in a very similar way across all targets.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_ASMPRINTER_H
+#define LLVM_CODEGEN_ASMPRINTER_H
+
+#include "llvm/CodeGen/MachineFunctionPass.h"
+
+namespace llvm {
+  class Constant;
+  class Mangler;
+
+  class AsmPrinter : public MachineFunctionPass {
+  protected:
+    /// Output stream on which we're printing assembly code.
+    ///
+    std::ostream &O;
+
+    /// Target machine description.
+    ///
+    TargetMachine &TM;
+
+    /// Name-mangler for global names.
+    ///
+    Mangler *Mang;
+
+    /// Cache of mangled name for current function. This is recalculated at the
+    /// beginning of each call to runOnMachineFunction().
+    ///
+    std::string CurrentFnName;
+
+    AsmPrinter(std::ostream &o, TargetMachine &tm) : O(o), TM(tm) { }
+
+    /// 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.
+    bool doInitialization(Module &M);
+
+    /// doFinalization - Shut down the asmprinter.  If you override this in your
+    /// pass, you must make sure to call it explicitly.
+    bool doFinalization(Module &M);
+
+    /// setupMachineFunction - This should be called when a new MachineFunction
+    /// is being processed from runOnMachineFunction.
+    void setupMachineFunction(MachineFunction &MF);
+
+    /// emitConstantValueOnly - Print out the specified constant, without a
+    /// storage class.  Only constants of first-class type are allowed here.
+    void emitConstantValueOnly(const Constant *CV);
+  };
+}
+
+#endif