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//===-- 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/Support/InstVisitor.h"
#include "Support/Statistic.h"
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");
#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> {
friend class InstVisitor<InstCount>;
void visitFunction (Function &F) { ++TotalFuncs; }
void visitBasicBlock(BasicBlock &BB) { ++TotalBlocks; }
#define HANDLE_INST(N, OPCODE, CLASS) \
void visit##OPCODE(CLASS &) { ++Num##OPCODE##Inst; ++TotalInsts; }
#include "llvm/Instruction.def"
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();
}
virtual void print(std::ostream &O, const Module *M) const {}
};
RegisterAnalysis<InstCount> X("instcount",
"Counts the various types of Instructions");
}
// InstCount::run - This is the main Analysis entry point for a
// function.
//
bool InstCount::run(Module &M) {
visit(M);
return false;
}
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