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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
//===-- InstCount.cpp - Collects the count of all instructions ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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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/ADT/Statistic.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/InstVisitor.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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#define DEBUG_TYPE "instcount"
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STATISTIC(TotalInsts , "Number of instructions (of all types)");
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STATISTIC(TotalBlocks, "Number of basic blocks");
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STATISTIC(TotalFuncs , "Number of non-external functions");
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#define HANDLE_INST(N, OPCODE, CLASS) \
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STATISTIC(Num ## OPCODE ## Inst, "Number of " #OPCODE " insts");
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#include "llvm/IR/Instruction.def"
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namespace {
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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/IR/Instruction.def"
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void visitInstruction(Instruction &I) {
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errs() << "Instruction Count does not know about " << I;
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llvm_unreachable(nullptr);
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}
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public:
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static char ID; // Pass identification, replacement for typeid
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InstCount() : FunctionPass(ID) {
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initializeInstCountPass(*PassRegistry::getPassRegistry());
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}
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bool runOnFunction(Function &F) override;
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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}
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void print(raw_ostream &O, const Module *M) const override {}
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};
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}
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char InstCount::ID = 0;
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INITIALIZE_PASS(InstCount, "instcount",
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"Counts the various types of Instructions", false, true)
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FunctionPass *llvm::createInstCountPass() { return new InstCount(); }
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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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