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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
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- 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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/// \file
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/// This file contains the declaration of the WebAssembly-specific
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/// utility functions.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H
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#include "llvm/CodeGen/MachineBasicBlock.h"
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namespace llvm {
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class WebAssemblyFunctionInfo;
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namespace WebAssembly {
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bool isArgument(const MachineInstr &MI);
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bool isCopy(const MachineInstr &MI);
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bool isTee(const MachineInstr &MI);
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bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
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bool isCallDirect(const MachineInstr &MI);
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bool isCallIndirect(const MachineInstr &MI);
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bool isMarker(const MachineInstr &MI);
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bool isThrow(const MachineInstr &MI);
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bool isRethrow(const MachineInstr &MI);
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bool isCatch(const MachineInstr &MI);
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bool mayThrow(const MachineInstr &MI);
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/// Returns the operand number of a callee, assuming the argument is a call
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/// instruction.
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unsigned getCalleeOpNo(const MachineInstr &MI);
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/// Returns if the given BB is a single BB terminate pad which starts with a
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/// 'catch' instruction.
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bool isCatchTerminatePad(const MachineBasicBlock &MBB);
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/// Returns if the given BB is a single BB terminate pad which starts with a
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/// 'catch_all' insrtruction.
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bool isCatchAllTerminatePad(const MachineBasicBlock &MBB);
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// Exception-related function names
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extern const char *const ClangCallTerminateFn;
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extern const char *const CxaBeginCatchFn;
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extern const char *const CxaRethrowFn;
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extern const char *const StdTerminateFn;
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extern const char *const PersonalityWrapperFn;
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/// Return the "bottom" block of an entity, which can be either a MachineLoop or
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/// WebAssemblyException. This differs from MachineLoop::getBottomBlock in that
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/// it works even if the entity is discontiguous.
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template <typename T> MachineBasicBlock *getBottom(const T *Unit) {
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MachineBasicBlock *Bottom = Unit->getHeader();
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for (MachineBasicBlock *MBB : Unit->blocks())
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if (MBB->getNumber() > Bottom->getNumber())
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Bottom = MBB;
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return Bottom;
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}
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} // end namespace WebAssembly
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} // end namespace llvm
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#endif
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