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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
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===- AMDGPUPerfHintAnalysis.h - analysis of functions memory traffic ----===//
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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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/// \file
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/// \brief Analyzes if a function potentially memory bound and if a kernel
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/// kernel may benefit from limiting number of waves to reduce cache thrashing.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_MDGPUPERFHINTANALYSIS_H
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#define LLVM_LIB_TARGET_AMDGPU_MDGPUPERFHINTANALYSIS_H
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#include "llvm/IR/ValueMap.h"
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#include "llvm/Pass.h"
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namespace llvm {
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struct AMDGPUPerfHintAnalysis : public FunctionPass {
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static char ID;
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public:
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AMDGPUPerfHintAnalysis() : FunctionPass(ID) {}
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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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bool isMemoryBound(const Function *F) const;
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bool needsWaveLimiter(const Function *F) const;
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struct FuncInfo {
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unsigned MemInstCount;
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unsigned InstCount;
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unsigned IAMInstCount; // Indirect access memory instruction count
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unsigned LSMInstCount; // Large stride memory instruction count
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FuncInfo() : MemInstCount(0), InstCount(0), IAMInstCount(0),
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LSMInstCount(0) {}
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};
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typedef ValueMap<const Function*, FuncInfo> FuncInfoMap;
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private:
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FuncInfoMap FIM;
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};
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_AMDGPU_MDGPUPERFHINTANALYSIS_H
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