ExpandIntegerPowExpressions.h

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//

// Copyright 2016 The ANGLE Project Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

//

// This mutating tree traversal works around a bug in the HLSL compiler optimizer with "pow" that

// manifests under the following conditions:

//

// - If pow() has a literal exponent value

// - ... and this value is integer or within 10e-6 of an integer

// - ... and it is in {-4, -3, -2, 2, 3, 4, 5, 6, 7, 8}

//

// The workaround is to replace the pow with a series of multiplies.

// See http://anglebug.com/851

#ifndef COMPILER_TRANSLATOR_TREEOPS_D3D_EXPANDINTEGERPOWEXPRESSIONS_H_

#define COMPILER_TRANSLATOR_TREEOPS_D3D_EXPANDINTEGERPOWEXPRESSIONS_H_

#include "common/angleutils.h"

namespace sh

class TCompiler;

class TIntermNode;

class TSymbolTable;

[[nodiscard]] bool ExpandIntegerPowExpressions(TCompiler *compiler,

                                               TIntermNode *root,

                                               TSymbolTable *symbolTable);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEOPS_D3D_EXPANDINTEGERPOWEXPRESSIONS_H_