From 58de8cdce75bcee981ec813c57fb2ed7e83e9878 Mon Sep 17 00:00:00 2001
From: Dan Liew <daniel.liew@imperial.ac.uk>
Date: Wed, 11 Dec 2013 16:01:51 +0000
Subject: Remove old algorithm for acquiring debug info. Since LLVM 2.7, debug
 information is attached directly to most instructions so the simpler
 algorithm added in  5ecfd6e2fd5becc10be355b3a20d014e76e40518 can be used.

Since support for LLVM version < 2.9 has been removed the old algorithm
should be removed.

This has been tested with LLVM 2.9 and LLVM 3.3
---
 lib/Module/InstructionInfoTable.cpp | 61 -------------------------------------
 1 file changed, 61 deletions(-)

(limited to 'lib/Module/InstructionInfoTable.cpp')

diff --git a/lib/Module/InstructionInfoTable.cpp b/lib/Module/InstructionInfoTable.cpp
index 4285c6b0..204457d2 100644
--- a/lib/Module/InstructionInfoTable.cpp
+++ b/lib/Module/InstructionInfoTable.cpp
@@ -108,10 +108,7 @@ InstructionInfoTable::InstructionInfoTable(Module *m)
 
   for (Module::iterator fnIt = m->begin(), fn_ie = m->end(); 
        fnIt != fn_ie; ++fnIt) {
-    const std::string *initialFile = &dummyString;
-    unsigned initialLine = 0;
 
-#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 3)
     for (inst_iterator it = inst_begin(fnIt), ie = inst_end(fnIt); it != ie;
         ++it) {
       const std::string *initialFile = &dummyString;
@@ -130,64 +127,6 @@ InstructionInfoTable::InstructionInfoTable(Module *m)
                                                   initialLine,
                                                   assemblyLine)));
     }
-#else
-    // It may be better to look for the closest stoppoint to the entry
-    // following the CFG, but it is not clear that it ever matters in
-    // practice.
-    for (inst_iterator it = inst_begin(fnIt), ie = inst_end(fnIt);
-         it != ie; ++it)
-      if (getInstructionDebugInfo(&*it, initialFile, initialLine))
-        break;
-
-    typedef std::map<BasicBlock*, std::pair<const std::string*,unsigned> > 
-      sourceinfo_ty;
-    sourceinfo_ty sourceInfo;
-    for (llvm::Function::iterator bbIt = fnIt->begin(), bbie = fnIt->end(); 
-         bbIt != bbie; ++bbIt) {
-      std::pair<sourceinfo_ty::iterator, bool>
-        res = sourceInfo.insert(std::make_pair(bbIt,
-                                               std::make_pair(initialFile,
-                                                              initialLine)));
-      if (!res.second)
-        continue;
-
-      std::vector<BasicBlock*> worklist;
-      worklist.push_back(bbIt);
-
-      do {
-        BasicBlock *bb = worklist.back();
-        worklist.pop_back();
-
-        sourceinfo_ty::iterator si = sourceInfo.find(bb);
-        assert(si != sourceInfo.end());
-        const std::string *file = si->second.first;
-        unsigned line = si->second.second;
-        
-        for (BasicBlock::iterator it = bb->begin(), ie = bb->end();
-             it != ie; ++it) {
-          Instruction *instr = it;
-          unsigned assemblyLine = 0;
-          std::map<const Instruction*, unsigned>::const_iterator ltit = 
-            lineTable.find(instr);
-          if (ltit!=lineTable.end())
-            assemblyLine = ltit->second;
-          getInstructionDebugInfo(instr, file, line);
-          infos.insert(std::make_pair(instr,
-                                      InstructionInfo(id++,
-                                                      *file,
-                                                      line,
-                                                      assemblyLine)));        
-        }
-        
-        for (succ_iterator it = succ_begin(bb), ie = succ_end(bb); 
-             it != ie; ++it) {
-          if (sourceInfo.insert(std::make_pair(*it,
-                                               std::make_pair(file, line))).second)
-            worklist.push_back(*it);
-        }
-      } while (!worklist.empty());
-    }
-#endif
   }
 }
 
-- 
cgit 1.4.1