source/opt/freeze_spec_constant_value_pass.h

// Copyright (c) 2016 Google Inc.
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//
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// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
//    https://www.khronos.org/registry/
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#ifndef LIBSPIRV_OPT_FREEZE_SPEC_CONSTANT_VALUE_PASS_H_
#define LIBSPIRV_OPT_FREEZE_SPEC_CONSTANT_VALUE_PASS_H_

#include "module.h"
#include "pass.h"

namespace spvtools {
namespace opt {

// The transformation pass that specializes the value of spec constants to
// their default values. This pass only processes the spec constants that have
// Spec ID decorations (defined by OpSpecConstant, OpSpecConstantTrue and
// OpSpecConstantFalse instructions) and replaces them with their front-end
// version counterparts (OpConstant, OpConstantTrue and OpConstantFalse). The
// corresponding Spec ID annotation instructions will also be removed. This
// pass does not fold the newly added front-end constants and does not process
// other spec constants defined by OpSpecConstantComposite or OpSpecConstantOp.
class FreezeSpecConstantValuePass : public Pass {
 public:
  const char* name() const override { return "freeze-spec-const"; }
  bool Process(ir::Module*) override;
};

}  // namespace opt
}  // namespace spvtools

#endif  // LIBSPIRV_OPT_FREEZE_SPEC_CONSTANT_VALUE_PASS_H_