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// Copyright 2022 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/loop.h"
#include "src/tint/lang/core/ir/clone_context.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::Loop);
namespace tint::core::ir {
Loop::Loop() = default;
Loop::Loop(ir::Block* i, ir::MultiInBlock* b, ir::MultiInBlock* c)
: initializer_(i), body_(b), continuing_(c) {
TINT_ASSERT(initializer_);
TINT_ASSERT(body_);
TINT_ASSERT(continuing_);
if (initializer_) {
initializer_->SetParent(this);
}
if (body_) {
body_->SetParent(this);
}
if (continuing_) {
continuing_->SetParent(this);
}
}
Loop::~Loop() = default;
Loop* Loop::Clone(CloneContext& ctx) {
auto* new_init = ctx.ir.blocks.Create<MultiInBlock>();
auto* new_body = ctx.ir.blocks.Create<MultiInBlock>();
auto* new_continuing = ctx.ir.blocks.Create<MultiInBlock>();
auto* new_loop =
ctx.ir.allocators.instructions.Create<Loop>(new_init, new_body, new_continuing);
ctx.Replace(this, new_loop);
initializer_->CloneInto(ctx, new_init);
body_->CloneInto(ctx, new_body);
continuing_->CloneInto(ctx, new_continuing);
new_loop->SetResults(ctx.Clone(results_));
return new_loop;
}
void Loop::ForeachBlock(const std::function<void(ir::Block*)>& cb) {
if (initializer_) {
cb(initializer_);
}
if (body_) {
cb(body_);
}
if (continuing_) {
cb(continuing_);
}
}
void Loop::ForeachBlock(const std::function<void(const ir::Block*)>& cb) const {
if (initializer_) {
cb(initializer_);
}
if (body_) {
cb(body_);
}
if (continuing_) {
cb(continuing_);
}
}
bool Loop::HasInitializer() const {
return initializer_->Terminator() != nullptr;
}
void Loop::SetInitializer(ir::Block* block) {
if (initializer_ && initializer_->Parent() == this) {
initializer_->SetParent(nullptr);
}
initializer_ = block;
if (block) {
block->SetParent(this);
}
}
void Loop::SetBody(ir::MultiInBlock* block) {
if (body_ && body_->Parent() == this) {
body_->SetParent(nullptr);
}
body_ = block;
if (block) {
block->SetParent(this);
}
}
bool Loop::HasContinuing() const {
return continuing_->Terminator() != nullptr;
}
void Loop::SetContinuing(ir::MultiInBlock* block) {
if (continuing_ && continuing_->Parent() == this) {
continuing_->SetParent(nullptr);
}
continuing_ = block;
if (block) {
block->SetParent(this);
}
}
} // namespace tint::core::ir