src/tint/lang/core/ir/continue.cc

// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "src/tint/lang/core/ir/continue.h"

#include <utility>

#include "src/tint/lang/core/ir/block.h"
#include "src/tint/lang/core/ir/clone_context.h"
#include "src/tint/lang/core/ir/loop.h"
#include "src/tint/lang/core/ir/module.h"
#include "src/tint/lang/core/ir/multi_in_block.h"
#include "src/tint/utils/ice/ice.h"

TINT_INSTANTIATE_TYPEINFO(tint::core::ir::Continue);

namespace tint::core::ir {

Continue::Continue(Id id) : Base(id) {}

Continue::Continue(Id id, ir::Loop* loop, VectorRef<Value*> args) : Base(id), loop_(loop) {
    TINT_ASSERT(loop_);

    AddOperands(Continue::kArgsOperandOffset, std::move(args));

    if (loop_) {
        loop_->Continuing()->AddInboundSiblingBranch(this);
    }
}

Continue::~Continue() = default;

Continue* Continue::Clone(CloneContext& ctx) {
    auto* loop = ctx.Remap(Loop());
    auto args = ctx.Remap<Continue::kDefaultNumOperands>(Args());

    return ctx.ir.CreateInstruction<Continue>(loop, args);
}

void Continue::SetLoop(ir::Loop* loop) {
    if (loop_ && loop_->Body()) {
        loop_->Body()->RemoveInboundSiblingBranch(this);
    }
    loop_ = loop;
    if (loop) {
        loop->Body()->AddInboundSiblingBranch(this);
    }
}

}  // namespace tint::core::ir