dawn-cmake/src/ast/unary_op_expression.cc
Ben Clayton 545c9742d5 Cloning: move arguments to create() into temporary locals
In C++ argument evaluation order is undefined. MSVC and Clang evaluate these in different orders, leading to hilarity when writing tests that expect a deterministic ordering.

Pull out all the argument expressions to create() in the clone functions so a cloned program is deterministic in its ordering between compilers.

Change-Id: I8e2de31398960c480ce7ee1dfaac4f67652d2dbc
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/41544
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Auto-Submit: Ben Clayton <bclayton@google.com>
2021-02-11 20:27:14 +00:00

59 lines
1.9 KiB
C++

// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/ast/unary_op_expression.h"
#include "src/clone_context.h"
#include "src/program_builder.h"
TINT_INSTANTIATE_CLASS_ID(tint::ast::UnaryOpExpression);
namespace tint {
namespace ast {
UnaryOpExpression::UnaryOpExpression(const Source& source,
UnaryOp op,
Expression* expr)
: Base(source), op_(op), expr_(expr) {}
UnaryOpExpression::UnaryOpExpression(UnaryOpExpression&&) = default;
UnaryOpExpression::~UnaryOpExpression() = default;
UnaryOpExpression* UnaryOpExpression::Clone(CloneContext* ctx) const {
// Clone arguments outside of create() call to have deterministic ordering
auto src = ctx->Clone(source());
auto* e = ctx->Clone(expr());
return ctx->dst->create<UnaryOpExpression>(src, op_, e);
}
bool UnaryOpExpression::IsValid() const {
return expr_ != nullptr && expr_->IsValid();
}
void UnaryOpExpression::to_str(const semantic::Info& sem,
std::ostream& out,
size_t indent) const {
make_indent(out, indent);
out << "UnaryOp[" << result_type_str(sem) << "]{" << std::endl;
make_indent(out, indent + 2);
out << op_ << std::endl;
expr_->to_str(sem, out, indent + 2);
make_indent(out, indent);
out << "}" << std::endl;
}
} // namespace ast
} // namespace tint