zipr/irdb optimizer support

Former-commit-id: 5b5f871b59e360fb3b1b9cbd40ef0efd039d8177

libEXEIO/include/exeio.h

@@ -40,6 +40,7 @@ namespace EXEIO
 	class exeio_backend_t
 	{
 		public:
+			virtual ~exeio_backend_t() { }
 			virtual void dump_header(std::ostream& stream) =0;
 			virtual void dump_section_headers(std::ostream& stream) =0;
 			virtual void load(exeio_t* main, char* filename) =0;
@@ -76,7 +77,7 @@ namespace EXEIO
 			// constructors
 			exeio_t()  { Init(); }
 			exeio_t(char* filename) { Init(); load(filename); }
-			~exeio_t() { delete backend; }
+			virtual ~exeio_t() { delete backend; }
 
             virtual void load(std::string filename) { load((char*)filename.c_str()); }
 

libIRDB/include/util/insn_preds.hpp

@@ -46,6 +46,7 @@ class InstructionPredecessors_t
 	private:
 
 	virtual void AddPred(const Instruction_t* before, const Instruction_t* after);
+	virtual void AddPreds(const Instruction_t* before, const InstructionSet_t& after);
 
 	PredMap_t pred_map;
 };

libIRDB/src/util/insn_preds.cpp

@@ -29,6 +29,14 @@ using namespace std;
 
 
 
+void InstructionPredecessors_t::AddPreds(const Instruction_t* before, const InstructionSet_t& afterset)
+{
+	for(InstructionSet_t::const_iterator it=afterset.begin(); it!=afterset.end(); ++it)
+	{
+		pred_map[*it].insert((libIRDB::Instruction_t*)before);
+	}
+}
+
 void InstructionPredecessors_t::AddPred(const Instruction_t* before, const Instruction_t* after)
 {
 	assert(before);
@@ -50,6 +58,9 @@ void InstructionPredecessors_t::AddFile(const FileIR_t* firp2)
 		Instruction_t* insn=*it;
 		AddPred(insn, insn->GetTarget());
 		AddPred(insn, insn->GetFallthrough());
-	}
 
+		if(insn->GetIBTargets())
+			AddPreds(insn, *insn->GetIBTargets());
+		
+	}
 }