Changed lowering and asmprinter to use ABI Names class called PAN.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71386 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16.h b/lib/Target/PIC16/PIC16.h
index 1f4aa96..04fb172 100644
--- a/lib/Target/PIC16/PIC16.h
+++ b/lib/Target/PIC16/PIC16.h
@@ -18,6 +18,7 @@
#include "llvm/Target/TargetMachine.h"
#include <iosfwd>
#include <cassert>
+#include <sstream>
#include <cstring>
#include <string>
@@ -41,19 +42,22 @@
UGE
};
}
- // A Central object to manage all ABI naming conventions.
- class PIC16ABINames {
+ // 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.
- // they are prefixed with @
// These are maily function names and global variable names.
+ // Example - @foo, @i
// -------------------------------------------------------
// Functions and auto variables.
- // Names are mangled as <prefix><funcname>.<id>.<varname>
- // Where prefix is a special char '@' and id is any one of
+ // 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.
@@ -74,106 +78,218 @@
// To pass args: @sra_i8.args.
// To return val: @sra_i8.ret.
//----------------------------------------------
+ // SECTION Names
+ // uninitialized globals - @udata.<num>.#
+ // initialized globals - @idata.<num>.#
+ // Function frame - @<func>.frame_section.
+ // Function autos - @<func>.autos_section.
+ // Declarations - @section.0
+ //----------------------------------------------------------
- enum IDs {
+ // Tags used to mangle different names.
+ enum TAGS {
PREFIX_SYMBOL,
-
- FUNC_AUTOS,
- FUNC_FRAME,
- FUNC_RET,
- FUNC_ARGS,
- FUNC_TEMPS,
+ GLOBAL,
+ STATIC_LOCAL,
+ AUTOS_LABEL,
+ FRAME_LABEL,
+ RET_LABEL,
+ ARGS_LABEL,
+ TEMPS_LABEL,
LIBCALL,
FRAME_SECTION,
- AUTOS_SECTION
+ AUTOS_SECTION,
+ CODE_SECTION
};
- inline static const char *getIDName(IDs id) {
- switch (id) {
- default: assert(0 && "Unknown id");
+ // Textual names of the tags.
+ inline static const char *getTagName(TAGS tag) {
+ switch (tag) {
+ default: return "";
case PREFIX_SYMBOL: return "@";
- case FUNC_AUTOS: return ".auto.";
- case FUNC_FRAME: return ".frame.";
- case FUNC_TEMPS: return ".temp.";
- case FUNC_ARGS: return ".args.";
- case FUNC_RET: return ".ret.";
- case FRAME_SECTION: return "fpdata";
- case AUTOS_SECTION: return "fadata";
+ 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 ".fpdata.";
+ case AUTOS_SECTION: return ".fadata.";
+ case CODE_SECTION: return "code";
}
}
- inline static IDs getID(const std::string &Sym) {
- if (Sym.find(getIDName(FUNC_TEMPS)))
- return FUNC_TEMPS;
+ // 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(getIDName(FUNC_FRAME)))
- return FUNC_FRAME;
+ if (Sym.find(getTagName(FRAME_LABEL)) != std::string::npos)
+ return FRAME_LABEL;
- if (Sym.find(getIDName(FUNC_RET)))
- return FUNC_RET;
+ if (Sym.find(getTagName(RET_LABEL)) != std::string::npos)
+ return RET_LABEL;
- if (Sym.find(getIDName(FUNC_ARGS)))
- return FUNC_ARGS;
+ if (Sym.find(getTagName(ARGS_LABEL)) != std::string::npos)
+ return ARGS_LABEL;
- if (Sym.find(getIDName(FUNC_AUTOS)))
- return FUNC_AUTOS;
+ if (Sym.find(getTagName(AUTOS_LABEL)) != std::string::npos)
+ return AUTOS_LABEL;
- if (Sym.find(getIDName(LIBCALL)))
+ if (Sym.find(getTagName(LIBCALL)) != std::string::npos)
return LIBCALL;
- // It does not have any ID. So its a global.
- assert (0 && "Could not determine ID symbol type");
+ // 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");
}
- // Get func name from a mangled name.
- // In all cases func name is the first component before a '.'.
- static inline std::string getFuncNameForSym(const std::string &Sym) {
- const char *prefix = getIDName (PREFIX_SYMBOL);
+ // 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 has a prefix, func name start after prfix in that case.
- size_t func_name_start = 0;
- if (Sym.find(prefix, 0, strlen(prefix)) != std::string::npos)
- func_name_start = strlen(prefix);
+ // 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 ('.', func_name_start);
+ size_t func_name_end = Sym.find ('.');
- return Sym.substr (func_name_start, func_name_end);
+ return Sym.substr (0, func_name_end);
}
- // Form a section name given the section type and func name.
- static std::string
- getSectionNameForFunc (const std::string &Fname, const IDs sec_id) {
- std::string sec_id_string = getIDName(sec_id);
- return sec_id_string + "." + Fname + ".#";
+ // 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 and idata section names are generated by a given number.
+ // @udata.<num>.#
+ static std::string getUdataSectionName(unsigned num) {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << "udata." << num << ".# UDATA";
+ return o.str();
+ }
+
+ static std::string getIdataSectionName(unsigned num) {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << "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 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 (ID) of the symbol from its mangled name
+ // 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 &Sym) {
+ static inline std::string getSectionNameForSym(const std::string &Sym1) {
+ std::string Sym = addPrefix(Sym1);
+
std::string SectionName;
- IDs id = getID (Sym);
std::string Fname = getFuncNameForSym (Sym);
+ TAGS id = getSymbolTag (Sym);
switch (id) {
default : assert (0 && "Could not determine external symbol type");
- case FUNC_FRAME:
- case FUNC_RET:
- case FUNC_TEMPS:
- case FUNC_ARGS: {
- return getSectionNameForFunc (Fname, FRAME_SECTION);
+ case FRAME_LABEL:
+ case RET_LABEL:
+ case TEMPS_LABEL:
+ case ARGS_LABEL: {
+ return getFrameSectionName(Fname);
}
- case FUNC_AUTOS: {
- return getSectionNameForFunc (Fname, AUTOS_SECTION);
+ case AUTOS_LABEL: {
+ return getAutosSectionName(Fname);
}
}
}
- }; // class PIC16ABINames.
+ }; // class PAN.
+
+
+ // External symbol names require memory to live till the program end.
+ // So we have to allocate it and keep.
+ inline static const char *createESName (const std::string &name) {
+ char *tmpName = new char[name.size() + 1];
+ strcpy (tmpName, name.c_str());
+ return tmpName;
+ }
@@ -218,7 +334,6 @@
bool Verbose);
// Banksel optimzer pass.
FunctionPass *createPIC16MemSelOptimizerPass();
- std::string getSectionNameForSym(const std::string &Sym);
} // end namespace llvm;
// Defines symbolic names for PIC16 registers. This defines a mapping from