6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===----- MIRFSDiscriminator.h: MIR FS Discriminator Support --0-- c++ -*-===//
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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 contains the supporting functions for adding Machine level IR
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// Flow Sensitive discriminators to the instruction debug information. With
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// this, a cloned machine instruction in a different MachineBasicBlock will
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// have its own discriminator value. This is done in a MIRAddFSDiscriminators
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// pass.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MIRFSDISCRIMINATOR_H
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#define LLVM_CODEGEN_MIRFSDISCRIMINATOR_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/Support/Discriminator.h"
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#include <cassert>
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#include <cstdint>
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namespace llvm {
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class MachineFunction;
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using namespace sampleprof;
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class MIRAddFSDiscriminators : public MachineFunctionPass {
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MachineFunction *MF = nullptr;
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FSDiscriminatorPass Pass;
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unsigned LowBit;
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unsigned HighBit;
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public:
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static char ID;
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/// PassNum is the sequence number this pass is called, start from 1.
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MIRAddFSDiscriminators(FSDiscriminatorPass P = FSDiscriminatorPass::Pass1)
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: MachineFunctionPass(ID), Pass(P) {
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LowBit = getFSPassBitBegin(P);
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HighBit = getFSPassBitEnd(P);
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assert(LowBit < HighBit && "HighBit needs to be greater than Lowbit");
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}
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StringRef getPassName() const override {
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return "Add FS discriminators in MIR";
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}
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/// getNumFSBBs() - Return the number of machine BBs that have FS samples.
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unsigned getNumFSBBs();
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/// getNumFSSamples() - Return the number of samples that have flow sensitive
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/// values.
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uint64_t getNumFSSamples();
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/// getMachineFunction - Return the current machine function.
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const MachineFunction *getMachineFunction() const { return MF; }
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private:
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bool runOnMachineFunction(MachineFunction &) override;
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};
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} // namespace llvm
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#endif // LLVM_CODEGEN_MIRFSDISCRIMINATOR_H
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