ea8554e35b
Created this for instcount and func-properties-analysis to be able to see the change the optimization pipelines have on stats
106 lines
4.0 KiB
C++
106 lines
4.0 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/Analysis/InstCount.h"
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#include "llvm/ADT/Statistic.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/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(TotalInstsPreOptimization,
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"Number of instructions of all types (before optimizations)");
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STATISTIC(TotalInsts, "Number of instructions of all types");
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STATISTIC(TotalBlocksPreOptimization,
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"Number of basic blocks (before optimizations)");
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STATISTIC(TotalBlocks, "Number of basic blocks");
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STATISTIC(TotalFuncsPreOptimization,
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"Number of non-external functions (before optimizations)");
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STATISTIC(TotalFuncs, "Number of non-external functions");
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STATISTIC(LargestFunctionSizePreOptimization,
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"Largest number of instructions in a single function (before "
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"optimizations)");
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STATISTIC(LargestFunctionSize,
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"Largest number of instructions in a single function");
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STATISTIC(LargestFunctionBBCountPreOptimization,
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"Largest number of basic blocks in a single function (before "
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"optimizations)");
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STATISTIC(LargestFunctionBBCount,
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"Largest number of basic blocks in a single function");
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#define HANDLE_INST(N, OPCODE, CLASS) \
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STATISTIC(Num##OPCODE##InstPreOptimization, \
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"Number of " #OPCODE " insts (before optimizations)"); \
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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 InstVisitor<InstCount> {
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friend class InstVisitor<InstCount>;
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bool IsPreOptimization;
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public:
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InstCount(bool IsPreOptimization) : IsPreOptimization(IsPreOptimization) {}
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void visitFunction(Function &F) {
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if (IsPreOptimization) {
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++TotalFuncsPreOptimization;
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LargestFunctionSizePreOptimization.updateMax(F.getInstructionCount());
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LargestFunctionBBCountPreOptimization.updateMax(F.size());
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} else {
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++TotalFuncs;
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LargestFunctionSize.updateMax(F.getInstructionCount());
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LargestFunctionBBCount.updateMax(F.size());
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}
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}
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void visitBasicBlock(BasicBlock &BB) {
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if (IsPreOptimization)
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++TotalBlocksPreOptimization;
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else
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++TotalBlocks;
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}
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#define HANDLE_INST(N, OPCODE, CLASS) \
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void visit##OPCODE(CLASS &) { \
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if (IsPreOptimization) { \
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++Num##OPCODE##InstPreOptimization; \
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++TotalInstsPreOptimization; \
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} else { \
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++Num##OPCODE##Inst; \
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++TotalInsts; \
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} \
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}
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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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};
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} // namespace
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PreservedAnalyses InstCountPass::run(Function &F,
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FunctionAnalysisManager &FAM) {
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LLVM_DEBUG(dbgs() << "INSTCOUNT: running on function " << F.getName()
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<< "\n");
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InstCount(this->IsPreOptimization).visit(F);
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return PreservedAnalyses::all();
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}
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