forked from OSchip/llvm-project
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
//===-- InstCount.cpp - Collects the count of all instructions ------------===//
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//
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// This pass collects the count of all instructions and reports them
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Pass.h"
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#include "llvm/Function.h"
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#include "llvm/Support/InstVisitor.h"
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#include "Support/Statistic.h"
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namespace {
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Statistic<> TotalInsts ("instcount", "Number of instructions (of all types)");
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Statistic<> TotalBlocks("instcount", "Number of basic blocks");
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Statistic<> TotalFuncs ("instcount", "Number of non-external functions");
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#define HANDLE_INST(N, OPCODE, CLASS) \
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Statistic<> Num##OPCODE##Inst("instcount", "Number of " #OPCODE " insts");
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#include "llvm/Instruction.def"
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class InstCount : public FunctionPass, public InstVisitor<InstCount> {
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friend class InstVisitor<InstCount>;
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void visitFunction (Function &F) { ++TotalFuncs; }
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void visitBasicBlock(BasicBlock &BB) { ++TotalBlocks; }
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#define HANDLE_INST(N, OPCODE, CLASS) \
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void visit##OPCODE(CLASS &) { ++Num##OPCODE##Inst; ++TotalInsts; }
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#include "llvm/Instruction.def"
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void visitInstruction(Instruction &I) {
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std::cerr << "Instruction Count does not know about " << I;
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abort();
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}
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public:
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virtual bool runOnFunction(Function &F);
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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virtual void print(std::ostream &O, const Module *M) const {}
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};
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RegisterAnalysis<InstCount> X("instcount",
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"Counts the various types of Instructions");
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}
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// InstCount::run - This is the main Analysis entry point for a
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// function.
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//
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bool InstCount::runOnFunction(Function &F) {
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visit(F);
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return false;
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}
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