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efadf1f9df
This reverts commit 649aba93a27170cb03a4b17c98a19b9237a880b8, now that the approach started there has been shown to be workable in the patch series culminating in https://reviews.llvm.org/D74192.
56 lines
1.8 KiB
C++
56 lines
1.8 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 isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
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bool mayThrow(const MachineInstr &MI);
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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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/// Returns the operand number of a callee, assuming the argument is a call
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/// instruction.
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const MachineOperand &getCalleeOp(const MachineInstr &MI);
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} // end namespace WebAssembly
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} // end namespace llvm
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#endif
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