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5ffd83dbcc
master 2e10b7a39b9, the last commit before the llvmorg-12-init tag, from which release/11.x was branched. Note that for now, I rolled back all our local changes to make merging easier, and I will reapply the still-relevant ones after updating to 11.0.0-rc1.
51 lines
1 KiB
C++
51 lines
1 KiB
C++
//===-- Use.cpp - Implement the Use class ---------------------------------===//
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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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#include "llvm/IR/Use.h"
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#include "llvm/IR/User.h"
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#include "llvm/IR/Value.h"
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#include <new>
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namespace llvm {
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void Use::swap(Use &RHS) {
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if (Val == RHS.Val)
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return;
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if (Val)
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removeFromList();
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Value *OldVal = Val;
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if (RHS.Val) {
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RHS.removeFromList();
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Val = RHS.Val;
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Val->addUse(*this);
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} else {
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Val = nullptr;
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}
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if (OldVal) {
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RHS.Val = OldVal;
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RHS.Val->addUse(RHS);
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} else {
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RHS.Val = nullptr;
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}
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}
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unsigned Use::getOperandNo() const {
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return this - getUser()->op_begin();
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}
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void Use::zap(Use *Start, const Use *Stop, bool del) {
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while (Start != Stop)
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(--Stop)->~Use();
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if (del)
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::operator delete(Start);
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}
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} // namespace llvm
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