fir::KindMapping Class Reference

#include <flang/Optimizer/Dialect/Support/KindMapping.h>

Public Types
using	KindTy = unsigned
using	Bitsize = unsigned
using	LLVMTypeID = llvm::Type::TypeID
using	MatchResult = mlir::ParseResult

Public Member Functions
	KindMapping (mlir::MLIRContext *context)
	KindMapping (mlir::MLIRContext *context, llvm::ArrayRef< KindTy > defs)
	KindMapping (mlir::MLIRContext *context, llvm::StringRef map, llvm::ArrayRef< KindTy > defs={})
	KindMapping (mlir::MLIRContext *context, llvm::StringRef map, llvm::StringRef defs)
Bitsize	getCharacterBitsize (KindTy kind) const
	Get the size in bits of !fir.char<kind>
Bitsize	getIntegerBitsize (KindTy kind) const
	Get the size in bits of !fir.int<kind>
Bitsize	getLogicalBitsize (KindTy kind) const
	Get the size in bits of !fir.logical<kind>
Bitsize	getRealBitsize (KindTy kind) const
	Get the size in bits of !fir.real<kind>
LLVMTypeID	getRealTypeID (KindTy kind) const
	Get the LLVM Type::TypeID of !fir.real<kind>
LLVMTypeID	getComplexTypeID (KindTy kind) const
	Get the LLVM Type::TypeID of !fir.complex<kind>
mlir::MLIRContext *	getContext () const
const llvm::fltSemantics &	getFloatSemantics (KindTy kind) const
	Get the float semantics of !fir.real<kind>
std::string	mapToString () const
	Convert the current kind map to a string.
KindTy	defaultCharacterKind () const
KindTy	defaultComplexKind () const
KindTy	defaultDoubleKind () const
KindTy	defaultIntegerKind () const
KindTy	defaultLogicalKind () const
KindTy	defaultRealKind () const
std::string	defaultsToString () const
	Convert the current default kinds to a string.

Static Public Member Functions
static constexpr const char *	getDefaultMap ()
	Get the default kind map as a string.
static constexpr const char *	getDefaultKinds ()
	Get the default kinds as a string.
static std::vector< KindTy >	toDefaultKinds (llvm::StringRef defs)

Detailed Description

The kind mapping is an encoded string that informs FIR how the Fortran KIND values from the front-end should be converted to LLVM IR types. This encoding allows the mapping from front-end KIND values to backend LLVM IR types to be customized by the front-end.

The provided string uses the following syntax.

intrinsic-key : kind-value (, intrinsic-key : kind-value)*

intrinsic-key is a single character for the intrinsic type. 'i' : INTEGER (size in bits) 'l' : LOGICAL (size in bits) 'a' : CHARACTER (size in bits) 'r' : REAL (encoding value) 'c' : COMPLEX (encoding value)

kind-value is either an unsigned integer (for 'i', 'l', and 'a') or one of 'Half', 'BFloat', 'Float', 'Double', 'X86_FP80', or 'FP128' (for 'r' and 'c').

If LLVM adds support for new floating-point types, the final list should be extended.

Constructor & Destructor Documentation

KindMapping() [1/3]

fir::KindMapping::KindMapping ( mlir::MLIRContext * context )

explicit

KindMapping constructor with both the kind map and default kinds read from command-line options.

KindMapping() [2/3]

fir::KindMapping::KindMapping ( mlir::MLIRContext * context, llvm::ArrayRef< KindTy > defs )

explicit

KindMapping constructor taking a defs argument to specify the default kinds for intrinsic types. To set the default kinds, an ArrayRef of 6 KindTy must be passed. The kinds must be the given in the following order: CHARACTER, COMPLEX, DOUBLE PRECISION, INTEGER, LOGICAL, and REAL. The kind map is read from command-line options, if given.

KindMapping() [3/3]

fir::KindMapping::KindMapping ( mlir::MLIRContext * context, llvm::StringRef map, llvm::ArrayRef< KindTy > defs = {} )

explicit

KindMapping constructor taking an optional defs argument to specify the default kinds for intrinsic types. To set the default kinds, an ArrayRef of 6 KindTy must be passed. The kinds must be the given in the following order: CHARACTER, COMPLEX, DOUBLE PRECISION, INTEGER, LOGICAL, and REAL.

Member Function Documentation

toDefaultKinds()

std::vector< KindTy > fir::KindMapping::toDefaultKinds ( llvm::StringRef defs )

static

Translate a default kinds string into a default kind vector. This vector can be passed to the KindMapping ctor.

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The documentation for this class was generated from the following files:

• include/flang/Optimizer/Dialect/Support/KindMapping.h
• lib/Optimizer/Dialect/Support/KindMapping.cpp