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revert r79562 + r79563 

llvm-svn: 79690
This commit is contained in:
Chris Lattner 2009-08-21 23:12:15 +00:00
parent c906d17973
commit 773416e062
10 changed files with 280 additions and 533 deletions
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56
llvm/lib/Target/PIC16/AsmPrinter/PIC16AsmPrinter.cpp
View File

@ -39,7 +39,6 @@ PIC16AsmPrinter::PIC16AsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
PTLI = static_cast<PIC16TargetLowering*>(TM.getTargetLowering());
PTAI = static_cast<const PIC16TargetAsmInfo*>(T);
PTOF = (PIC16TargetObjectFile*)&PTLI->getObjFileLowering();
CurrentFnPtr = NULL;
}
bool PIC16AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
@ -61,11 +60,6 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Get the mangled name.
const Function *F = MF.getFunction();
CurrentFnName = Mang->getMangledName(F);
CurrentFnPtr = F;
// Current function name was mangled in llvm-ld for both
// MainLine and InterruptLine and should be demangled here
PAN::updateCallLineSymbol(CurrentFnName, CurrentFnPtr);
// Emit the function frame (args and temps).
EmitFunctionFrame(MF);
@ -77,23 +71,18 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Now emit the instructions of function in its code section.
const MCSection *fCodeSection =
getObjFileLowering().getSectionForFunction(CurrentFnName,
PAN::isISR(F));
getObjFileLowering().getSectionForFunction(CurrentFnName);
// Start the Code Section.
O << "\n";
OutStreamer.SwitchSection(fCodeSection);
// If it is not an interrupt function then emit the data address
// retrieval code in function code itself.
if (!(PAN::isISR(F))) {
// Emit the frame address of the function at the beginning of code.
O << "\tretlw low(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
O << "\tretlw high(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
}
// Emit the frame address of the function at the beginning of code.
O << "\tretlw low(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
O << "\tretlw high(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
// Emit function start label.
O << CurrentFnName << ":\n";
DebugLoc CurDL;
O << "\n";
// Print out code for the function.
@ -153,9 +142,7 @@ void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
if (PAN::isMemIntrinsic(Sname)) {
LibcallDecls.push_back(createESName(Sname));
}
// All the call sites were mangled in llvm-ld pass hence the
// operands for call instructions should be demangled here.
PAN::updateCallLineSymbol(Sname, CurrentFnPtr);
O << Sname;
break;
}
@ -164,9 +151,7 @@ void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
// If its a libcall name, record it to decls section.
if (PAN::getSymbolTag(Sname) == PAN::LIBCALL) {
// LibCallDecls for InterruptLine functions should have ".IL" suffix
const char *NewName= PAN::getUpdatedLibCallDecl(Sname, CurrentFnPtr);
LibcallDecls.push_back(NewName);
LibcallDecls.push_back(Sname);
}
// Record a call to intrinsic to print the extern declaration for it.
@ -175,13 +160,9 @@ void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
Sym = PAN::addPrefix(Sym);
LibcallDecls.push_back(createESName(Sym));
}
// Update the library call symbols. Library calls to InterruptLine
// functions are different. (They have ".IL" in their names)
// Also other symbols (frame and temp) for the cloned function
// should be updated here.
PAN::updateCallLineSymbol(Sym, CurrentFnPtr);
O << Sym;
break;
O << Sym;
break;
}
case MachineOperand::MO_MachineBasicBlock:
printBasicBlockLabel(MO.getMBB());
@ -293,11 +274,7 @@ void PIC16AsmPrinter::EmitFunctionDecls(Module &M) {
const char *directive = I->isDeclaration() ? TAI->getExternDirective() :
TAI->getGlobalDirective();
// This is called in initialization. Hence information of the current
// function line is not available. Hence UnspecifiedLine. UnspecifiedLine
// will be treated as MainLine.
PAN::updateCallLineSymbol(Name, PAN::UnspecifiedLine);
O << directive << Name << "\n";
O << directive << PAN::getRetvalLabel(Name) << "\n";
O << directive << PAN::getArgsLabel(Name) << "\n";
@ -446,13 +423,6 @@ void PIC16AsmPrinter::EmitAutos(std::string FunctName) {
// Now print Autos section for this function.
std::string SectionName = PAN::getAutosSectionName(FunctName);
// If this function is a cloned function then the name of auto section
// will not be present in the list of existing section. Hence this section
// should be cloned.
// This function will check and clone
PTOF->createClonedSectionForAutos(SectionName);
const std::vector<PIC16Section*> &AutosSections = PTOF->AutosSections;
for (unsigned i = 0; i < AutosSections.size(); i++) {
O << "\n";
@ -466,8 +436,6 @@ void PIC16AsmPrinter::EmitAutos(std::string FunctName) {
Constant *C = Items[j]->getInitializer();
const Type *Ty = C->getType();
unsigned Size = TD->getTypeAllocSize(Ty);
// Auto variables should be cloned for the cloned function
PAN::updateCallLineAutos(VarName, CurrentFnName);
// Emit memory reserve directive.
O << VarName << " RES " << Size << "\n";
}

1
llvm/lib/Target/PIC16/AsmPrinter/PIC16AsmPrinter.h
View File

@ -73,7 +73,6 @@ namespace llvm {
PIC16DbgInfo DbgInfo;
const PIC16TargetAsmInfo *PTAI;
std::list<const char *> LibcallDecls; // List of extern decls.
const Function *CurrentFnPtr; // Hold the pointer to current Function
};
} // end of namespace

2
llvm/lib/Target/PIC16/Makefile
View File

@ -17,7 +17,7 @@ BUILT_SOURCES = PIC16GenRegisterInfo.h.inc PIC16GenRegisterNames.inc \
PIC16GenDAGISel.inc PIC16GenCallingConv.inc \
PIC16GenSubtarget.inc
DIRS = AsmPrinter TargetInfo PIC16Passes
DIRS = AsmPrinter TargetInfo
include $(LEVEL)/Makefile.common

263
llvm/lib/Target/PIC16/PIC16.h
View File

@ -22,7 +22,6 @@
#include <sstream>
#include <cstring>
#include <string>
#include "PIC16PAN.h"
namespace llvm {
class PIC16TargetMachine;
@ -44,6 +43,268 @@ 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.
// 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) {

6
llvm/lib/Target/PIC16/PIC16ISelLowering.cpp
View File

@ -443,7 +443,6 @@ const char *PIC16TargetLowering::getTargetNodeName(unsigned Opcode) const {
case PIC16ISD::SELECT_ICC: return "PIC16ISD::SELECT_ICC";
case PIC16ISD::BRCOND: return "PIC16ISD::BRCOND";
case PIC16ISD::RET: return "PIC16ISD::RET";
case PIC16ISD::RETFIE: return "PIC16ISD::RETFIE";
case PIC16ISD::Dummy: return "PIC16ISD::Dummy";
}
}
@ -1273,10 +1272,7 @@ PIC16TargetLowering::LowerReturn(SDValue Chain,
DAG.getConstant (i, MVT::i8));
}
if (PAN::isISR(F))
return DAG.getNode(PIC16ISD::RETFIE, dl, MVT::Other, Chain);
else
return DAG.getNode(PIC16ISD::RET, dl, MVT::Other, Chain);
return DAG.getNode(PIC16ISD::RET, dl, MVT::Other, Chain);
}
void PIC16TargetLowering::

1
llvm/lib/Target/PIC16/PIC16ISelLowering.h
View File

@ -53,7 +53,6 @@ namespace llvm {
SELECT_ICC, // Psuedo to be caught in schedular and expanded to brcond.
BRCOND, // Conditional branch.
RET, // Return.
RETFIE, // Return from interrupt
Dummy
};

5
llvm/lib/Target/PIC16/PIC16InstrInfo.td
View File

@ -117,7 +117,6 @@ def PIC16Selecticc : SDNode<"PIC16ISD::SELECT_ICC", SDT_PIC16Selecticc,
def PIC16ret : SDNode<"PIC16ISD::RET", SDTNone, [SDNPHasChain]>;
def PIC16Retfie : SDNode<"PIC16ISD::RETFIE", SDTNone, [SDNPHasChain]>;
//===----------------------------------------------------------------------===//
// PIC16 Operand Definitions.
//===----------------------------------------------------------------------===//
@ -498,10 +497,6 @@ let isTerminator = 1, isBarrier = 1, isReturn = 1 in
def Return :
ControlFormat<0, (outs), (ins), "return", [(PIC16ret)]>;
//Return instruction to return from ISR
let isTerminator = 1, isBarrier = 1, isReturn = 1 in
def Retfie :
ControlFormat<0, (outs), (ins), "retfie", [(PIC16Retfie)]>;
//===----------------------------------------------------------------------===//
// PIC16 Replacment Patterns.
//===----------------------------------------------------------------------===//

426
llvm/lib/Target/PIC16/PIC16PAN.h
View File

@ -1,426 +0,0 @@
//===-- PIC16PAN.h - PIC16 ABI Naming conventions --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the entry points for global functions defined in
// the LLVM PIC16 back-end.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_PIC16PAN_H
#define LLVM_TARGET_PIC16PAN_H
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Function.h"
#include <iosfwd>
#include <cassert>
#include <cstring>
#include <string>
namespace llvm {
// 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
};
enum CallLine {
MainLine,
InterruptLine,
SharedLine,
UnspecifiedLine
};
// 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.";
}
}
inline static bool isISR(const Function *F) {
if (F->getSection().find("interrupt") != std::string::npos)
return true;
return false;
}
inline static bool isInterruptLineFunction(const Function *F) {
if (isISR(F)) return true;
if (F->getSection().find("IL") != std::string::npos)
return true;
return false;
}
inline static bool isMainLineFunction(const Function *F) {
if (F->getSection().find("ML") != std::string::npos)
return true;
return false;
}
inline static bool isSharedLineFunction(const Function *F) {
if (F->getSection().find("SL") != std::string::npos)
return true;
return false;
}
inline static const char *getUpdatedLibCallDecl(const char *Name,
const Function *F) {
// If the current function is not an interrupt line function then
// there is no need to change the name.
if (!isInterruptLineFunction(F))
return Name;
// CAUTION::This code may cause some memory leak and at times
// use more memory than required.
// (We will try to clean it sometime later)
// InterruptLine functions should hold ".IL" suffix and
char *NewName = (char *)malloc(strlen(Name) + 3 + 1);
strcpy(NewName, Name);
strcat(NewName, ".IL");
return NewName;
}
inline static void updateCallLineAutos(std::string &Sym, std::string FuncName) {
// If the function has ".IL" in its name then it must be
// a cloned function and autos for such a function should also
// have ".IL" in their name. So update them here.
if (FuncName.find(".IL") != std::string::npos)
Sym.replace(Sym.find(".auto"), 5, ".IL.auto");
}
// Insert ".IL" at proper location in the ARGS and RET symbols
inline static void updateCallLineLibcall(std::string &Sym) {
std::string SubStr;
std::size_t pos;
std::string Suffix;
if (getSymbolTag(Sym) == ARGS_LABEL) {
Suffix = getTagName(ARGS_LABEL);
pos = Sym.find(Suffix);
SubStr = Sym.substr(0,pos);
} else if (getSymbolTag(Sym) == RET_LABEL) {
Suffix = getTagName(RET_LABEL);
pos = Sym.find(Suffix);
SubStr = Sym.substr(0,pos);
} else {
SubStr = Sym;
Suffix = "";
}
Sym = SubStr + ".IL" + Suffix;
}
inline static void updateCallLineSymbol(std::string &Sym, CallLine CLine) {
if (isLIBCALLSymbol(Sym) && CLine == InterruptLine) {
updateCallLineLibcall(Sym);
return;
}
// UnMangle the function name - mangled in llvm-ld
// For MainLine function the shared string should be removed
// and for InterruptLine function the shared string should be
// replaced with ".IL"
std::string ReplaceString="";
if (CLine == MainLine || CLine == UnspecifiedLine)
ReplaceString = "";
else if (CLine == InterruptLine)
ReplaceString = ".IL";
std::string FindString = ".shared";
if (Sym.find(FindString) != std::string::npos) {
Sym.replace(Sym.find(FindString), FindString.length(), ReplaceString);
return;
}
}
inline static void updateCallLineSymbol(std::string &Sym,
const Function *F) {
// If it is an auto symbol then it should be updated accordingly
if (Sym.find(".auto") != std::string::npos) {
updateCallLineAutos(Sym, F->getName().str());
return;
}
if (isMainLineFunction(F))
updateCallLineSymbol(Sym, MainLine);
else if (isInterruptLineFunction(F))
updateCallLineSymbol(Sym, InterruptLine);
else
updateCallLineSymbol(Sym, UnspecifiedLine);
}
inline static bool isLIBCALLSymbol(const std::string &Sym) {
if (Sym.find(getTagName(LIBCALL)) != std::string::npos)
return true;
return false;
}
// 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, bool isInterrupt) {
std::string Func1 = addPrefix(Func);
std::string tag = getTagName(CODE_SECTION);
std::string Name = Func1 + tag + "# CODE";
// If this is an interrupt function then the code section should
// be placed at address 0x4 (hard)
if (isInterrupt)
Name += " 0x4";
return Name;
}
// 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);
}
}
}
inline static std::string getAutosSectionForColor(std::string Color) {
return Color.append("_AUTOS");
}
}; // class PAN.
} // end namespace llvm;
#endif

46
llvm/lib/Target/PIC16/PIC16TargetObjectFile.cpp
View File

@ -70,8 +70,8 @@ void PIC16TargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &tm){
}
const MCSection *PIC16TargetObjectFile::
getSectionForFunction(const std::string &FnName, bool isInterrupt) const {
std::string T = PAN::getCodeSectionName(FnName, isInterrupt);
getSectionForFunction(const std::string &FnName) const {
std::string T = PAN::getCodeSectionName(FnName);
return getPIC16Section(T.c_str(), SectionKind::getText());
}
@ -196,48 +196,6 @@ PIC16TargetObjectFile::getSectionForAuto(const GlobalVariable *GV) const {
return FoundAutoSec->S_;
}
void PIC16TargetObjectFile::createClonedSectionForAutos(const std::string &SecName) {
// If the function is cloned then it will have ".IL" in its name
// If this function is not cloned then return;
if (SecName.find(".IL") == std::string::npos)
return;
// Come here if the function is cloned.
// Get the name of the original section from which it has been cloned.
std::string OrigName = SecName;
OrigName.replace(SecName.find(".IL"),3,"");
// Find original section
PIC16Section *FoundAutoSec = NULL;
for (unsigned i = 0; i < AutosSections.size(); i++) {
if (AutosSections[i]->S_->getName() == OrigName) {
FoundAutoSec = AutosSections[i];
break;
}
}
// No auto section exists for the original function.
if (!FoundAutoSec)
return;
// Create new section for the cloned function
const MCSectionPIC16 *NewSection =
getPIC16Section(SecName.c_str(), SectionKind::getMetadata());
PIC16Section *NewAutoSec = new PIC16Section(NewSection);
// Add this newly created autos section to the list of AutosSections.
AutosSections.push_back(NewAutoSec);
// Add the items from the original section to the new section
// Donot mangle them here. Because mangling them here will distort
// the original names.
// These names will be mangled them at the time of printing only
const std::vector<const GlobalVariable*> &Items = FoundAutoSec->Items;
for (unsigned j = 0; j < Items.size(); j++) {
NewAutoSec->Items.push_back(Items[j]);
}
}
// Override default implementation to put the true globals into
// multiple data sections if required.

7
llvm/lib/Target/PIC16/PIC16TargetObjectFile.h
View File

@ -77,13 +77,10 @@ namespace llvm {
Mangler *Mang,
const TargetMachine&) const;
const MCSection *getSectionForFunction(const std::string &FnName,
bool isInterrupt=false) const;
const MCSection *getSectionForFunction(const std::string &FnName) const;
const MCSection *getSectionForFunctionFrame(const std::string &FnName)const;
// If the current function is cloned then create the new autos section
// also.
void createClonedSectionForAutos(const std::string &SecName);
private:
std::string getSectionNameForSym(const std::string &Sym) const;