src/tint/lang/core/ir/validator.h

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#ifndef SRC_TINT_LANG_CORE_IR_VALIDATOR_H_
#define SRC_TINT_LANG_CORE_IR_VALIDATOR_H_

#include "src/tint/utils/containers/enum_set.h"
#include "src/tint/utils/result.h"

// Forward declarations
namespace tint::core::ir {
class Module;
}  // namespace tint::core::ir

namespace tint::core::ir {

/// Enumerator of optional IR capabilities.
enum class Capability : uint8_t {
    /// Allows 8-bit integer types.
    kAllow8BitIntegers,
    /// Allows 64-bit integer types.
    kAllow64BitIntegers,
    /// Allows ClipDistances on f32 parameters
    kAllowClipDistancesOnF32,
    /// Allows handle vars to not have binding points
    kAllowHandleVarsWithoutBindings,
    /// Allows module scoped lets
    kAllowModuleScopeLets,
    /// Allows multiple entry points in the module.
    kAllowMultipleEntryPoints,
    /// Allow overrides
    kAllowOverrides,
    /// Allows pointers and handle addressspace variables inside structures.
    kAllowPointersAndHandlesInStructures,
    /// Allows ref types
    kAllowRefTypes,
    /// Allows access instructions to create pointers to vector elements.
    kAllowVectorElementPointer,
    /// Allows private address space variables in function scopes.
    kAllowPrivateVarsInFunctions,
    /// Allows phony assignment instructions to be used.
    kAllowPhonyInstructions,
    /// Allows lets to have any type, used by MSL backend for module scoped vars
    kAllowAnyLetType,
    /// Allows input_attachment_index to be associated with any type, used by
    /// SPIRV backend for spirv.image.
    kAllowAnyInputAttachmentIndexType,
    /// Allows workgroup address space pointers as entry point inputs. Used by
    /// the MSL backend.
    kAllowWorkspacePointerInputToEntryPoint,
    /// Allows binding points to be non-unique. Used after BindingRemapper is
    /// invoked by MSL & GLSL backends.
    kAllowDuplicateBindings,
    /// Allows module scope `var`s to exist without an IO annotation
    kAllowUnannotatedModuleIOVariables,
    /// Allows non-core types in the IR module
    kAllowNonCoreTypes,
    /// Allows matrix annotations on structure members
    kAllowStructMatrixDecorations,
};

/// Capabilities is a set of Capability
using Capabilities = EnumSet<Capability>;

/// Validates that a given IR module is correctly formed
/// @param mod the module to validate
/// @param capabilities the optional capabilities that are allowed
/// @returns success or failure
Result<SuccessType> Validate(const Module& mod, Capabilities capabilities = {});

/// Validates the module @p ir and dumps its contents if required by the build configuration.
/// @param ir the module to transform
/// @param msg the msg to accompany the output
/// @param capabilities the optional capabilities that are allowed
/// @param timing when the validation is run.
/// @returns success or failure
Result<SuccessType> ValidateAndDumpIfNeeded(const Module& ir,
                                            const char* msg,
                                            Capabilities capabilities = {},
                                            std::string_view timing = "before");

}  // namespace tint::core::ir

#endif  // SRC_TINT_LANG_CORE_IR_VALIDATOR_H_