1 files changed, 0 insertions, 182 deletions
diff --git a/lib/Target/PIC16/PIC16Passes/PIC16Overlay.cpp b/lib/Target/PIC16/PIC16Passes/PIC16Overlay.cpp
deleted file mode 100644
index 0f8928a4b5..0000000000
--- a/lib/Target/PIC16/PIC16Passes/PIC16Overlay.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-//===-- PIC16Overlay.cpp - Implementation for PIC16 Frame Overlay===//
-//
-//                     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 PIC16 Frame Overlay implementation.
-//
-//===----------------------------------------------------------------------===//
-
-
-#include "llvm/Analysis/CallGraph.h"
-#include "llvm/Pass.h"
-#include "llvm/Module.h"
-#include "llvm/Instructions.h"
-#include "llvm/Value.h"
-#include "PIC16Overlay.h"
-#include "llvm/Function.h"
-#include <cstdlib>
-#include <sstream>
-using namespace llvm;
-
-namespace llvm {
-  char PIC16Overlay::ID = 0;
-  ModulePass *createPIC16OverlayPass() { return new PIC16Overlay(); }
-}
-
-void PIC16Overlay::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AU.addRequired<CallGraph>();
-}
-
-void PIC16Overlay::DFSTraverse(CallGraphNode *CGN, unsigned Depth) {
-  // Do not set any color for external calling node.
-  if (Depth != 0 && CGN->getFunction()) {
-    unsigned Color = getColor(CGN->getFunction());
-
-    // Handle indirectly called functions
-    if (Color >= PIC16OVERLAY::StartIndirectCallColor || 
-        Depth >= PIC16OVERLAY::StartIndirectCallColor) {
-      // All functions called from an indirectly called function are given
-      // an unique color.
-      if (Color < PIC16OVERLAY::StartIndirectCallColor &&
-          Depth >= PIC16OVERLAY::StartIndirectCallColor)
-        setColor(CGN->getFunction(), Depth);
-
-      for (unsigned int i = 0; i < CGN->size(); i++)
-        DFSTraverse((*CGN)[i], ++IndirectCallColor);
-      return;
-    }
-    // Just return if the node already has a color greater than the current 
-    // depth. A node must be colored with the maximum depth that it has.
-    if (Color >= Depth)
-      return;
-    
-    Depth = ModifyDepthForInterrupt(CGN, Depth);  
-    setColor(CGN->getFunction(), Depth);
-  }
-  
-  // Color all children of this node with color depth+1.
-  for (unsigned int i = 0; i < CGN->size(); i++)
-    DFSTraverse((*CGN)[i], Depth+1);
-}
-
-unsigned PIC16Overlay::ModifyDepthForInterrupt(CallGraphNode *CGN,
-                                                    unsigned Depth) {
-  Function *Fn = CGN->getFunction();
-
-  // Return original Depth if function or section for function do not exist.
-  if (!Fn || !Fn->hasSection())
-    return Depth;
-
-  // Return original Depth if this function is not marked as interrupt.
-  if (Fn->getSection().find("interrupt") == string::npos)
-    return Depth;
-
-  Depth = Depth + InterruptDepth;
-  return Depth;
-}
-
-void PIC16Overlay::setColor(Function *Fn, unsigned Color) {
-  std::string Section = "";
-  if (Fn->hasSection())
-    Section = Fn->getSection();
-
-  size_t Pos = Section.find(OverlayStr);
-
-  // Convert Color to string.
-  std::stringstream ss;
-  ss << Color;
-  std::string ColorString = ss.str();
-
-  // If color is already set then reset it with the new value. Else append 
-  // the Color string to section.
-  if (Pos != std::string::npos) {
-    Pos += OverlayStr.length();
-    char c = Section.at(Pos);
-    unsigned OldColorLength = 0;  
-    while (c >= '0' && c<= '9') {
-      OldColorLength++;    
-      if (Pos < Section.length() - 1)
-        Pos++;
-      else
-        break;
-      c = Section.at(Pos);
-    }
-    // Replace old color with new one.
-    Section.replace(Pos-OldColorLength +1, OldColorLength, ColorString); 
-  }
-  else {
-    // Append Color information to section string.
-    if (Fn->hasSection())
-      Section.append(" ");
-    Section.append(OverlayStr + ColorString);
-  }
-  Fn->setSection(Section);
-}
-
-unsigned PIC16Overlay::getColor(Function *Fn) {
-  int Color = 0;
-  if (!Fn->hasSection())
-    return 0;
-
-  std::string Section = Fn->getSection();
-  size_t Pos = Section.find(OverlayStr);
-  
-  // Return 0 if Color is not set.
-  if (Pos == std::string::npos)
-    return 0;
-
-  // Set Pos to after "Overlay=".
-  Pos += OverlayStr.length();
-  char c = Section.at(Pos);
-  std::string ColorString = "";
-
-  // Find the string representing Color. A Color can only consist of digits.
-  while (c >= '0' && c<= '9') { 
-    ColorString.append(1,c);
-    if (Pos < Section.length() - 1)
-      Pos++;
-    else
-      break;
-    c = Section.at(Pos);
-  }
-  Color = atoi(ColorString.c_str());
-  
-  return Color;    
-}
-
-bool PIC16Overlay::runOnModule(Module &M) {
-  CallGraph &CG = getAnalysis<CallGraph>();
-  CallGraphNode *ECN = CG.getExternalCallingNode();
-
-  MarkIndirectlyCalledFunctions(M); 
-  // Since External Calling Node is the base function, do a depth first 
-  // traversal of CallGraph with ECN as root. Each node with be marked with 
-  // a color that is max(color(callers)) + 1.
-  if(ECN) {
-    DFSTraverse(ECN, 0);
-  }
-  return false;
-}
-
-void PIC16Overlay::MarkIndirectlyCalledFunctions(Module &M) {
-  // If the use of a function is not a call instruction then this
-  // function might be called indirectly. In that case give it
-  // an unique color.
-  for (Module::iterator MI = M.begin(), E = M.end(); MI != E; ++MI) {
-    for (Value::use_iterator I = MI->use_begin(), E = MI->use_end(); I != E;
-         ++I) {
-      User *U = *I;
-      if ((!isa<CallInst>(U) && !isa<InvokeInst>(U))
-          || !CallSite(cast<Instruction>(U)).isCallee(I)) {
-        setColor(MI, ++IndirectCallColor);
-        break;
-      }
-    }
-  }
-}