418121c30a
(This reverts commit a5e0194709c40212694370e0ea789a1ca14548b5, and
corrects author).
Rename the pass to be able to extend it to function properties other than inliner features.
Reviewed By: mtrofin
Differential Revision: https://reviews.llvm.org/D82044
42 lines
1.6 KiB
C++
42 lines
1.6 KiB
C++
//===- FunctionPropertiesAnalysis.cpp - Function properties extraction ----===//
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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 file implements an analysis extracting function features, which may be
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// used by ML-driven policies, for example.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/FunctionPropertiesAnalysis.h"
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#include "llvm/IR/Instructions.h"
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using namespace llvm;
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AnalysisKey FunctionPropertiesAnalysis::Key;
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FunctionPropertiesAnalysis::Result
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FunctionPropertiesAnalysis::run(const Function &F,
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FunctionAnalysisManager &FAM) {
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Result Ret;
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Ret.Uses = ((!F.hasLocalLinkage()) ? 1 : 0) + F.getNumUses();
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for (const auto &BB : F) {
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++Ret.BasicBlockCount;
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if (const auto *BI = dyn_cast<BranchInst>(BB.getTerminator())) {
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if (BI->isConditional())
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Ret.BlocksReachedFromConditionalInstruction += BI->getNumSuccessors();
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} else if (const auto *SI = dyn_cast<SwitchInst>(BB.getTerminator()))
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Ret.BlocksReachedFromConditionalInstruction +=
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(SI->getNumCases() + (nullptr != SI->getDefaultDest()));
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for (const auto &I : BB)
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if (auto *CS = dyn_cast<CallBase>(&I)) {
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const auto *Callee = CS->getCalledFunction();
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if (Callee && !Callee->isIntrinsic() && !Callee->isDeclaration())
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++Ret.DirectCallsToDefinedFunctions;
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}
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}
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return Ret;
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} |