llvm/mlir/lib/TableGen/CodeGenHelpers.cpp

//===- CodeGenHelpers.cpp - MLIR op definitions generator ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// OpDefinitionsGen uses the description of operations to generate C++
// definitions for ops.
//
//===----------------------------------------------------------------------===//

#include "mlir/TableGen/CodeGenHelpers.h"
#include "mlir/TableGen/Operator.h"
#include "mlir/TableGen/Pattern.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/Path.h"
#include "llvm/TableGen/Record.h"

usingnamespacellvm;
usingnamespacemlir;
usingnamespacemlir::tblgen;

/// Generate a unique label based on the current file name to prevent name
/// collisions if multiple generated files are included at once.
static std::string getUniqueOutputLabel(const llvm::RecordKeeper &records,
                                        StringRef tag) { … }

StaticVerifierFunctionEmitter::StaticVerifierFunctionEmitter(
    raw_ostream &os, const llvm::RecordKeeper &records, StringRef tag)
    : … { … }

void StaticVerifierFunctionEmitter::emitOpConstraints(
    ArrayRef<const llvm::Record *> opDefs) { … }

void StaticVerifierFunctionEmitter::emitPatternConstraints(
    const llvm::ArrayRef<DagLeaf> constraints) { … }

//===----------------------------------------------------------------------===//
// Constraint Getters

StringRef StaticVerifierFunctionEmitter::getTypeConstraintFn(
    const Constraint &constraint) const { … }

// Find a uniqued attribute constraint. Since not all attribute constraints can
// be uniqued, return std::nullopt if one was not found.
std::optional<StringRef> StaticVerifierFunctionEmitter::getAttrConstraintFn(
    const Constraint &constraint) const { … }

StringRef StaticVerifierFunctionEmitter::getSuccessorConstraintFn(
    const Constraint &constraint) const { … }

StringRef StaticVerifierFunctionEmitter::getRegionConstraintFn(
    const Constraint &constraint) const { … }

//===----------------------------------------------------------------------===//
// Constraint Emission

/// Code templates for emitting type, attribute, successor, and region
/// constraints. Each of these templates require the following arguments:
///
/// {0}: The unique constraint name.
/// {1}: The constraint code.
/// {2}: The constraint description.

/// Code for a type constraint. These may be called on the type of either
/// operands or results.
static const char *const typeConstraintCode = …;

/// Code for an attribute constraint. These may be called from ops only.
/// Attribute constraints cannot reference anything other than `$_self` and
/// `$_op`.
///
/// TODO: Unique constraints for adaptors. However, most Adaptor::verify
/// functions are stripped anyways.
static const char *const attrConstraintCode = …;

/// Code for a successor constraint.
static const char *const successorConstraintCode = …;

/// Code for a region constraint. Callers will need to pass in the region's name
/// for emitting an error message.
static const char *const regionConstraintCode = …;

/// Code for a pattern type or attribute constraint.
///
/// {3}: "Type type" or "Attribute attr".
static const char *const patternAttrOrTypeConstraintCode = …;

void StaticVerifierFunctionEmitter::emitConstraints(
    const ConstraintMap &constraints, StringRef selfName,
    const char *const codeTemplate) { … }

void StaticVerifierFunctionEmitter::emitTypeConstraints() { … }

void StaticVerifierFunctionEmitter::emitAttrConstraints() { … }

void StaticVerifierFunctionEmitter::emitSuccessorConstraints() { … }

void StaticVerifierFunctionEmitter::emitRegionConstraints() { … }

void StaticVerifierFunctionEmitter::emitPatternConstraints() { … }

//===----------------------------------------------------------------------===//
// Constraint Uniquing

/// An attribute constraint that references anything other than itself and the
/// current op cannot be generically extracted into a function. Most
/// prohibitive are operands and results, which require calls to
/// `getODSOperands` or `getODSResults`. Attribute references are tricky too
/// because ops use cached identifiers.
static bool canUniqueAttrConstraint(Attribute attr) { … }

std::string StaticVerifierFunctionEmitter::getUniqueName(StringRef kind,
                                                         unsigned index) { … }

void StaticVerifierFunctionEmitter::collectConstraint(ConstraintMap &map,
                                                      StringRef kind,
                                                      Constraint constraint) { … }

void StaticVerifierFunctionEmitter::collectOpConstraints(
    ArrayRef<const Record *> opDefs) { … }

void StaticVerifierFunctionEmitter::collectPatternConstraints(
    const llvm::ArrayRef<DagLeaf> constraints) { … }

//===----------------------------------------------------------------------===//
// Public Utility Functions
//===----------------------------------------------------------------------===//

std::string mlir::tblgen::escapeString(StringRef value) { … }