speed up steens by using spliceFrom, improve its precision by realizing that

[oota-llvm.git] / lib / Analysis / InstCount.cpp

diff --git a/lib/Analysis/InstCount.cpp b/lib/Analysis/InstCount.cpp
index 18e0b9aceae389bf1d4b8fa0ebf4ece8dcedee46..c3a12eeb241389768cd2f3745467d84e65cb853c 100644 (file)
--- a/lib/Analysis/InstCount.cpp
+++ b/lib/Analysis/InstCount.cpp
@@ -1,25 +1,34 @@
 //===-- InstCount.cpp - Collects the count of all instructions ------------===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
 //
 // This pass collects the count of all instructions and reports them 
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Pass.h"
-#include "llvm/Module.h"
+#include "llvm/Function.h"
 #include "llvm/Support/InstVisitor.h"
-#include "Support/Statistic.h"
+#include "llvm/ADT/Statistic.h"
+using namespace llvm;
 
 namespace {
   Statistic<> TotalInsts ("instcount", "Number of instructions (of all types)");
   Statistic<> TotalBlocks("instcount", "Number of basic blocks");
   Statistic<> TotalFuncs ("instcount", "Number of non-external functions");
+  Statistic<> TotalMemInst("instcount", "Number of memory instructions");
 
 #define HANDLE_INST(N, OPCODE, CLASS) \
     Statistic<> Num##OPCODE##Inst("instcount", "Number of " #OPCODE " insts");
 
 #include "llvm/Instruction.def"
 
-  class InstCount : public Pass, public InstVisitor<InstCount> {
+  class InstCount : public FunctionPass, public InstVisitor<InstCount> {
     friend class InstVisitor<InstCount>;
 
     void visitFunction  (Function &F) { ++TotalFuncs; }
@@ -35,7 +44,7 @@ namespace {
       abort();
     }
   public:
-    virtual bool run(Module &M);
+    virtual bool runOnFunction(Function &F);
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.setPreservesAll();
@@ -51,7 +60,14 @@ namespace {
 // InstCount::run - This is the main Analysis entry point for a
 // function.
 //
-bool InstCount::run(Module &M) {
-  visit(M);
+bool InstCount::runOnFunction(Function &F) {
+  unsigned StartMemInsts =
+    NumGetElementPtrInst + NumLoadInst + NumStoreInst + NumCallInst + 
+    NumInvokeInst + NumAllocaInst + NumMallocInst + NumFreeInst;
+  visit(F);
+  unsigned EndMemInsts =
+    NumGetElementPtrInst + NumLoadInst + NumStoreInst + NumCallInst + 
+    NumInvokeInst + NumAllocaInst + NumMallocInst + NumFreeInst;
+  TotalMemInst += EndMemInsts-StartMemInsts;
   return false;
 }