Gives the count for various instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4706 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/InstCount.cpp b/lib/Analysis/InstCount.cpp
new file mode 100644 (file)
index 0000000..7ec3fda
--- /dev/null
+++ b/lib/Analysis/InstCount.cpp
@@ -0,0 +1,189 @@
+//===-- InstCount.cpp - Collects the count of all instructions ------------===//
+//
+// This pass collects the count of all instructions and reports them 
+//
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Pass.h"
+#include "llvm/Module.h"
+#include "llvm/iMemory.h"
+#include "llvm/iTerminators.h"
+#include "llvm/iPHINode.h"
+#include "llvm/iOther.h"
+#include "llvm/iOperators.h"
+#include "llvm/Support/InstVisitor.h"
+#include "llvm/Support/InstIterator.h"
+#include "llvm/Support/InstIterator.h"
+#include "Support/Statistic.h"
+#include <algorithm>
+
+namespace {
+  static Statistic<> NumReturnInst("instcount","Number of ReturnInsts");
+  static Statistic<> NumBranchInst("instcount", "Number of BranchInsts");
+  static Statistic<> NumPHINode("instcount", "Number of PHINodes");
+  static Statistic<> NumCastInst("instcount", "Number of CastInsts");
+  static Statistic<> NumCallInst("instcount", "Number of CallInsts");
+  static Statistic<> NumMallocInst("instcount", "Number of MallocInsts");
+  static Statistic<> NumAllocaInst("instcount", "Number of AllocaInsts");
+  static Statistic<> NumFreeInst("instcount", "Number of FreeInsts");
+  static Statistic<> NumLoadInst("instcount", "Number of LoadInsts");
+  static Statistic<> NumStoreInst("instcount", "Number of StoreInsts");
+  static Statistic<> NumGetElementPtrInst("instcount",
+                                         "Number of GetElementPtrInsts");
+                                                     
+  static Statistic<> NumSwitchInst("instcount", "Number of SwitchInsts");
+  static Statistic<> NumInvokeInst("instcount", "Number of InvokeInsts");
+  static Statistic<> NumBinaryOperator("instcount",
+                                      "Total Number of BinaryOperators");
+                                                          
+  static Statistic<> NumShiftInst("instcount", " Total Number of ShiftInsts");
+  static Statistic<> NumShlInst("instcount", "Number of Left ShiftInsts");
+                                                           
+  static Statistic<> NumShrInst("instcount", "Number of Right ShiftInsts");
+                                                                
+
+  static Statistic<> NumAddInst("instcount", "Number of AddInsts");
+  static Statistic<> NumSubInst("instcount", "Number of SubInsts");
+  static Statistic<> NumMulInst("instcount", "Number of MulInsts");
+  static Statistic<> NumDivInst("instcount", "Number of DivInsts");
+  static Statistic<> NumRemInst("instcount", "Number of RemInsts");
+  static Statistic<> NumAndInst("instcount", "Number of AndInsts");
+  static Statistic<> NumOrInst("instcount", "Number of OrInsts");
+  static Statistic<> NumXorInst("instcount", "Number of XorInsts");
+  static Statistic<> NumSetCondInst("instcount", "Total Number of SetCondInsts");
+  static Statistic<> NumSetEQInst("instcount", "Number of SetEQInsts");
+  static Statistic<> NumSetNEInst("instcount", "Number of SetNEInsts");
+  static Statistic<> NumSetLEInst("instcount", "Number of SetLEInsts");
+  static Statistic<> NumSetGEInst("instcount", "Number of SetGEInsts");
+  static Statistic<> NumSetLTInst("instcount", "Number of SetLTInsts");
+  static Statistic<> NumSetGTInst("instcount", "Number of SetGTInsts");
+  
+  class InstCount : public Pass, public InstVisitor<InstCount> {
+  private:
+        friend class InstVisitor<InstCount>;
+
+
+    void visitBinaryOperator(BinaryOperator &I);
+    void visitShiftInst(ShiftInst &I);
+    void visitSetCondInst(SetCondInst &I);
+    
+    inline void visitSwitchInst(SwitchInst &I) { NumSwitchInst++; }
+    inline void visitInvokeInst(InvokeInst &I) { NumInvokeInst++; }
+    inline void visitReturnInst(ReturnInst &I) { NumReturnInst++; }
+    inline void visitBranchInst(BranchInst &I) { NumBranchInst++; }
+    inline void visitPHINode(PHINode &I) { NumPHINode++; }
+    inline void visitCastInst (CastInst &I) { NumCastInst++; }
+    inline void visitCallInst (CallInst &I) { NumCastInst++; }
+    inline void visitMallocInst(MallocInst &I) { NumMallocInst++; }
+    inline void visitAllocaInst(AllocaInst &I) { NumAllocaInst++; }
+    inline void visitFreeInst  (FreeInst   &I) { NumFreeInst++; }
+    inline void visitLoadInst  (LoadInst   &I) { NumLoadInst++; }
+    inline void visitStoreInst (StoreInst  &I) { NumStoreInst++; }
+    inline void visitGetElementPtrInst(GetElementPtrInst &I) {
+      NumGetElementPtrInst++; }
+
+    inline void visitInstruction(Instruction &I) {
+      std::cerr << "Instruction Count does not know about " << I;
+      abort();
+    }
+  public:
+    virtual bool run(Module &M);
+
+    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+      AU.setPreservesAll();
+    }
+  };
+
+  RegisterOpt<InstCount> X("instcount",
+                          "Counts the various types of Instructions");
+                                                            
+}
+
+// createInstCountPass - The public interface to this file...
+Pass *createInstCountPass() { return new InstCount(); }
+
+
+// InstCount::run - This is the main Analysis entry point for a
+// function.
+//
+bool InstCount::run(Module &M) {
+    /* Initialization */
+  NumReturnInst = 0;
+  NumBranchInst = 0;
+  NumPHINode = 0;
+  NumCastInst = 0;
+  NumCallInst = 0;
+  NumMallocInst = 0;
+  NumAllocaInst = 0;
+  NumFreeInst = 0;
+  NumLoadInst = 0;
+  NumStoreInst = 0;
+  NumGetElementPtrInst = 0;
+  NumSwitchInst = 0;
+  NumInvokeInst = 0;
+  NumBinaryOperator = 0;
+  NumShiftInst = 0;
+  NumShlInst = 0;
+  NumShrInst = 0;
+  NumAddInst = 0;
+  NumSubInst = 0;
+  NumMulInst = 0;
+  NumDivInst = 0;
+  NumRemInst = 0;
+  NumAndInst = 0;
+  NumOrInst = 0;
+  NumXorInst = 0;
+  NumSetCondInst = 0;
+  NumSetEQInst = 0;
+  NumSetNEInst = 0;
+  NumSetLEInst = 0;
+  NumSetGEInst = 0;
+  NumSetLTInst = 0;
+  NumSetGTInst = 0;
+
+  for (Module::iterator mI = M.begin(), mE = M.end(); mI != mE; ++mI)
+    for (inst_iterator I = inst_begin(*mI), E = inst_end(*mI); I != E; ++I)
+      visit(*I);
+  return false;
+}
+
+
+
+void InstCount::visitBinaryOperator(BinaryOperator &I) {
+  NumBinaryOperator++;
+  switch (I.getOpcode()) {
+  case Instruction::Add: NumAddInst++; break;
+  case Instruction::Sub: NumSubInst++; break;
+  case Instruction::Mul: NumMulInst++; break;
+  case Instruction::Div: NumDivInst++; break;
+  case Instruction::Rem: NumRemInst++; break;
+  case Instruction::And: NumAndInst++; break;
+  case Instruction::Or: NumOrInst++; break;
+  case Instruction::Xor: NumXorInst++; break;
+  default : std::cerr<< " Wrong binary operator \n";
+  }
+}
+
+void InstCount::visitSetCondInst(SetCondInst &I) {
+  NumBinaryOperator++;
+  NumSetCondInst++;
+  switch (I.getOpcode()) {
+  case Instruction::SetEQ: NumSetEQInst++; break;
+  case Instruction::SetNE: NumSetNEInst++; break;
+  case Instruction::SetLE: NumSetLEInst++; break;
+  case Instruction::SetGE: NumSetGEInst++; break;
+  case Instruction::SetLT: NumSetLTInst++; break;
+  case Instruction::SetGT: NumSetGTInst++; break;
+  default : std::cerr<< " Wrong SetCond Inst \n";
+  }
+}
+
+void InstCount::visitShiftInst(ShiftInst &I) { 
+  NumShiftInst++;
+  switch (I.getOpcode()) {
+  case Instruction::Shl: NumShlInst++; break;
+  case Instruction::Shr: NumShrInst++; break;
+  default : std::cerr<< " Wrong ShiftInst \n";
+  }
+}