Complete Rewrite of AsmPrinter, TargetObjectFile based on new PIC16Section class

derived from MCSection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84180 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 259 deletions

diff --git a/lib/Target/PIC16/PIC16.h b/lib/Target/PIC16/PIC16.h
index 8a3704d707..e46c9b242e 100644
--- a/lib/Target/PIC16/PIC16.h
+++ b/lib/Target/PIC16/PIC16.h
@@ -42,266 +42,15 @@ namespace PIC16CC {
     UGE
   };
 }
-  // A Central class to manage all ABI naming conventions.
-  // PAN - [P]ic16 [A]BI [N]ames
-  class PAN {
-    public:
-    // Map the name of the symbol to its section name.
-    // Current ABI:
-    // -----------------------------------------------------
-    // ALL Names are prefixed with the symobl '@'.
-    // ------------------------------------------------------
-    // Global variables do not have any '.' in their names.
-    // These are maily function names and global variable names.
-    // Example - @foo,  @i
-    // -------------------------------------------------------
-    // Functions and auto variables.
-    // Names are mangled as <prefix><funcname>.<tag>.<varname>
-    // Where <prefix> is '@' and <tag> is any one of
-    // the following
-    // .auto. - an automatic var of a function.
-    // .temp. - temproray data of a function.
-    // .ret.  - return value label for a function.
-    // .frame. - Frame label for a function where retval, args
-    //           and temps are stored.
-    // .args. - Label used to pass arguments to a direct call.
-    // Example - Function name:   @foo
-    //           Its frame:       @foo.frame.
-    //           Its retval:      @foo.ret.
-    //           Its local vars:  @foo.auto.a
-    //           Its temp data:   @foo.temp.
-    //           Its arg passing: @foo.args.
-    //----------------------------------------------
-    // Libcall - compiler generated libcall names must start with .lib.
-    //           This id will be used to emit extern decls for libcalls.
-    // Example - libcall name:   @.lib.sra.i8
-    //           To pass args:   @.lib.sra.i8.args.
-    //           To return val:  @.lib.sra.i8.ret.
-    //----------------------------------------------
-    // SECTION Names
-    // uninitialized globals - @udata.<num>.#
-    // initialized globals - @idata.<num>.#
-    // Function frame - @<func>.frame_section.
-    // Function autos - @<func>.autos_section.
-    // Declarations - Enclosed in comments. No section for them.
-    //----------------------------------------------------------
-    
-    // Tags used to mangle different names. 
-    enum TAGS {
-      PREFIX_SYMBOL,
-      GLOBAL,
-      STATIC_LOCAL,
-      AUTOS_LABEL,
-      FRAME_LABEL,
-      RET_LABEL,
-      ARGS_LABEL,
-      TEMPS_LABEL,
-      
-      LIBCALL,
-      
-      FRAME_SECTION,
-      AUTOS_SECTION,
-      CODE_SECTION
-    };
-
-    // Textual names of the tags.
-    inline static const char *getTagName(TAGS tag) {
-      switch (tag) {
-      default: return "";
-      case PREFIX_SYMBOL:    return "@";
-      case AUTOS_LABEL:       return ".auto.";
-      case FRAME_LABEL:       return ".frame.";
-      case TEMPS_LABEL:       return ".temp.";
-      case ARGS_LABEL:       return ".args.";
-      case RET_LABEL:       return ".ret.";
-      case LIBCALL:       return ".lib.";
-      case FRAME_SECTION:       return ".frame_section.";
-      case AUTOS_SECTION:       return ".autos_section.";
-      case CODE_SECTION:       return ".code_section.";
-      }
-    }
-
-    // Get tag type for the Symbol.
-    inline static TAGS getSymbolTag(const std::string &Sym) {
-      if (Sym.find(getTagName(TEMPS_LABEL)) != std::string::npos)
-        return TEMPS_LABEL;
-
-      if (Sym.find(getTagName(FRAME_LABEL)) != std::string::npos)
-        return FRAME_LABEL;
-
-      if (Sym.find(getTagName(RET_LABEL)) != std::string::npos)
-        return RET_LABEL;
-
-      if (Sym.find(getTagName(ARGS_LABEL)) != std::string::npos)
-        return ARGS_LABEL;
-
-      if (Sym.find(getTagName(AUTOS_LABEL)) != std::string::npos)
-        return AUTOS_LABEL;
-
-      if (Sym.find(getTagName(LIBCALL)) != std::string::npos)
-        return LIBCALL;
-
-      // It does not have any Tag. So its a true global or static local.
-      if (Sym.find(".") == std::string::npos) 
-        return GLOBAL;
-      
-      // If a . is there, then it may be static local.
-      // We should mangle these as well in clang.
-      if (Sym.find(".") != std::string::npos) 
-        return STATIC_LOCAL;
- 
-      assert (0 && "Could not determine Symbol's tag");
-      return PREFIX_SYMBOL; // Silence warning when assertions are turned off.
-    }
-
-    // addPrefix - add prefix symbol to a name if there isn't one already.
-    inline static std::string addPrefix (const std::string &Name) {
-      std::string prefix = getTagName (PREFIX_SYMBOL);
-
-      // If this name already has a prefix, nothing to do.
-      if (Name.compare(0, prefix.size(), prefix) == 0)
-        return Name;
-
-      return prefix + Name;
-    }
-
-    // Get mangled func name from a mangled sym name.
-    // In all cases func name is the first component before a '.'.
-    static inline std::string getFuncNameForSym(const std::string &Sym1) {
-      assert (getSymbolTag(Sym1) != GLOBAL && "not belongs to a function");
-
-      std::string Sym = addPrefix(Sym1);
-
-      // Position of the . after func name. That's where func name ends.
-      size_t func_name_end = Sym.find ('.');
-
-      return Sym.substr (0, func_name_end);
-    }
-
-    // Get Frame start label for a func.
-    static std::string getFrameLabel(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(FRAME_LABEL);
-      return Func1 + tag;
-    }
-
-    static std::string getRetvalLabel(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(RET_LABEL);
-      return Func1 + tag;
-    }
-
-    static std::string getArgsLabel(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(ARGS_LABEL);
-      return Func1 + tag;
-    }
-
-    static std::string getTempdataLabel(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(TEMPS_LABEL);
-      return Func1 + tag;
-    }
 
-    static std::string getFrameSectionName(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(FRAME_SECTION);
-      return Func1 + tag + "# UDATA_OVR";
-    }
-
-    static std::string getAutosSectionName(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(AUTOS_SECTION);
-      return Func1 + tag + "# UDATA_OVR";
-    }
-
-    static std::string getCodeSectionName(const std::string &Func) {
-      std::string Func1 = addPrefix(Func);
-      std::string tag = getTagName(CODE_SECTION);
-      return Func1 + tag + "# CODE";
-    }
-
-    // udata, romdata and idata section names are generated by a given number.
-    // @udata.<num>.# 
-    static std::string getUdataSectionName(unsigned num, 
-                                           std::string prefix = "") {
-       std::ostringstream o;
-       o << getTagName(PREFIX_SYMBOL) << prefix << "udata." << num 
-         << ".# UDATA"; 
-       return o.str(); 
-    }
-
-    static std::string getRomdataSectionName(unsigned num,
-                                             std::string prefix = "") {
-       std::ostringstream o;
-       o << getTagName(PREFIX_SYMBOL) << prefix << "romdata." << num 
-         << ".# ROMDATA";
-       return o.str();
-    }
-
-    static std::string getIdataSectionName(unsigned num,
-                                           std::string prefix = "") {
-       std::ostringstream o;
-       o << getTagName(PREFIX_SYMBOL) << prefix << "idata." << num 
-         << ".# IDATA"; 
-       return o.str(); 
-    }
-
-    inline static bool isLocalName (const std::string &Name) {
-      if (getSymbolTag(Name) == AUTOS_LABEL)
-        return true;
-
-      return false;
-    }
-
-    inline static bool isMemIntrinsic (const std::string &Name) {
-      if (Name.compare("@memcpy") == 0 || Name.compare("@memset") == 0 ||
-          Name.compare("@memmove") == 0) {
-        return true;
-      }
-      
-      return false;
-    }
-
-    inline static bool isLocalToFunc (std::string &Func, std::string &Var) {
-      if (! isLocalName(Var)) return false;
-
-      std::string Func1 = addPrefix(Func);
-      // Extract func name of the varilable.
-      const std::string &fname = getFuncNameForSym(Var);
-
-      if (fname.compare(Func1) == 0)
-        return true;
-
-      return false;
-    }
-
-
-    // Get the section for the given external symbol names.
-    // This tries to find the type (Tag) of the symbol from its mangled name
-    // and return appropriate section name for it.
-    static inline std::string getSectionNameForSym(const std::string &Sym1) {
-      std::string Sym = addPrefix(Sym1);
-
-      std::string SectionName;
- 
-      std::string Fname = getFuncNameForSym (Sym);
-      TAGS id = getSymbolTag (Sym);
-
-      switch (id) {
-        default : assert (0 && "Could not determine external symbol type");
-        case FRAME_LABEL:
-        case RET_LABEL:
-        case TEMPS_LABEL:
-        case ARGS_LABEL:  {
-          return getFrameSectionName(Fname);
-        }
-        case AUTOS_LABEL: {
-          return getAutosSectionName(Fname);
-        }
-      }
-    }
-  }; // class PAN.
+  enum PIC16SectionType {
+      CODE,
+      UDATA,
+      IDATA,
+      ROMDATA,
+      UDATA_OVR,
+      UDATA_SHR
+    };
 
 
   // External symbol names require memory to live till the program end.