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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,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "src/tint/lang/core/ir/if.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::If);
namespace tint::core::ir {
If::If() = default;
If::If(Value* cond, ir::Block* t, ir::Block* f) : true_(t), false_(f) {
TINT_ASSERT(true_);
TINT_ASSERT(false_);
AddOperand(If::kConditionOperandOffset, cond);
if (true_) {
true_->SetParent(this);
}
if (false_) {
false_->SetParent(this);
}
}
If::~If() = default;
void If::ForeachBlock(const std::function<void(ir::Block*)>& cb) {
if (true_) {
cb(true_);
}
if (false_) {
cb(false_);
}
}
If* If::Clone(CloneContext& ctx) {
auto* cond = ctx.Remap(Condition());
auto* new_true = ctx.ir.blocks.Create<ir::Block>();
auto* new_false = ctx.ir.blocks.Create<ir::Block>();
auto* new_if = ctx.ir.allocators.instructions.Create<If>(cond, new_true, new_false);
ctx.Replace(this, new_if);
true_->CloneInto(ctx, new_true);
false_->CloneInto(ctx, new_false);
new_if->SetResults(ctx.Clone(results_));
return new_if;
}
void If::SetTrue(ir::Block* block) {
if (true_ && true_->Parent() == this) {
true_->SetParent(nullptr);
}
true_ = block;
if (block) {
block->SetParent(this);
}
}
void If::SetFalse(ir::Block* block) {
if (false_ && false_->Parent() == this) {
false_->SetParent(nullptr);
}
false_ = block;
if (block) {
block->SetParent(this);
}
}
} // namespace tint::core::ir