73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- C++ -*-====//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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