InferWidths.cpp File Reference

#include "circt/Dialect/FIRRTL/FIRRTLOps.h"
#include "circt/Dialect/FIRRTL/FIRRTLTypes.h"
#include "circt/Dialect/FIRRTL/FIRRTLUtils.h"
#include "circt/Dialect/FIRRTL/Passes.h"
#include "circt/Support/Debug.h"
#include "circt/Support/FieldRef.h"
#include "mlir/IR/Threading.h"
#include "mlir/Pass/Pass.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "circt/Dialect/FIRRTL/Passes.h.inc"

Include dependency graph for InferWidths.cpp:

Go to the source code of this file.

Namespaces
namespace	circt
	The InstanceGraph op interface, see InstanceGraphInterface.td for more details.
namespace	circt::firrtl
namespace	mlir

Macros
#define	DEBUG_TYPE   "infer-widths"
#define	GEN_PASS_DEF_INFERWIDTHS
#define	EXPR_NAMES(x)    Var##x, Derived##x, Id##x, Known##x, Add##x, Pow##x, Max##x, Min##x
#define	EXPR_KINDS   EXPR_NAMES()
#define	EXPR_CLASSES   EXPR_NAMES(Expr)

Typedefs
using	ExprSolution = std::pair< std::optional< int32_t >, bool >

Functions
static void	diagnoseUninferredType (InFlightDiagnostic &diag, Type t, Twine str)
static uint64_t	convertFieldIDToOurVersion (uint64_t fieldID, FIRRTLType type)
	Calculate the "InferWidths-fieldID" equivalent for the given fieldID + type.
template<typename T , typename std::enable_if< std::is_base_of< Expr, T >::value, int >::type = 0>
llvm::raw_ostream &	operator<< (llvm::raw_ostream &os, const T &e)
	Allow rvalue refs to Expr and subclasses to be printed to streams.
template<typename T , typename std::enable_if< std::is_base_of< Expr, T >::value, int >::type = 0>
llvm::hash_code	mlir::hash_value (const T &e)
llvm::raw_ostream &	operator<< (llvm::raw_ostream &os, const LinIneq &l)
static ExprSolution	computeUnary (ExprSolution arg, llvm::function_ref< int32_t(int32_t)> operation)
static ExprSolution	computeBinary (ExprSolution lhs, ExprSolution rhs, llvm::function_ref< int32_t(int32_t, int32_t)> operation)
static ExprSolution	solveExpr (Expr *expr, SmallPtrSetImpl< Expr * > &seenVars, std::vector< Frame > &worklist)
	Compute the value of a constraint expr.
static bool	hasUninferredWidth (Type type)
	Check if a type contains any FIRRTL type with uninferred widths.
static FIRRTLBaseType	resizeType (FIRRTLBaseType type, uint32_t newWidth)
	Resize a uint, sint, or analog type to a specific width.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "infer-widths"

Definition at line 28 of file InferWidths.cpp.

EXPR_CLASSES

#define EXPR_CLASSES   EXPR_NAMES(Expr)

Definition at line 113 of file InferWidths.cpp.

EXPR_KINDS

#define EXPR_KINDS   EXPR_NAMES()

Definition at line 112 of file InferWidths.cpp.

EXPR_NAMES

#define EXPR_NAMES

(

x

)

Var##x, Derived##x, Id##x, Known##x, Add##x, Pow##x, Max##x, Min##x

Definition at line 110 of file InferWidths.cpp.

GEN_PASS_DEF_INFERWIDTHS

#define GEN_PASS_DEF_INFERWIDTHS

Definition at line 32 of file InferWidths.cpp.

Typedef Documentation

ExprSolution

using ExprSolution = std::pair<std::optional<int32_t>, bool>

Definition at line 842 of file InferWidths.cpp.

Function Documentation

computeBinary()

static ExprSolution computeBinary ( ExprSolution  lhs, ExprSolution  rhs, llvm::function_ref< int32_t(int32_t, int32_t)>  operation  )

static

Definition at line 852 of file InferWidths.cpp.

Referenced by solveExpr().

computeUnary()

static ExprSolution computeUnary ( ExprSolution  arg, llvm::function_ref< int32_t(int32_t)>  operation  )

static

Definition at line 845 of file InferWidths.cpp.

Referenced by solveExpr().

convertFieldIDToOurVersion()

static uint64_t convertFieldIDToOurVersion ( uint64_t  fieldID, FIRRTLType  type  )

static

Calculate the "InferWidths-fieldID" equivalent for the given fieldID + type.

Definition at line 65 of file InferWidths.cpp.

References circt::hw::FieldIdImpl::getSubTypeByFieldID().

diagnoseUninferredType()

static void diagnoseUninferredType ( InFlightDiagnostic &  diag, Type  t, Twine  str  )

static

Definition at line 47 of file InferWidths.cpp.

References diagnoseUninferredType().

Referenced by diagnoseUninferredType().

hasUninferredWidth()

static bool hasUninferredWidth ( Type  type )

static

Check if a type contains any FIRRTL type with uninferred widths.

Definition at line 1290 of file InferWidths.cpp.

operator<<() [1/2]

llvm::raw_ostream & operator<< ( llvm::raw_ostream &  os, const LinIneq &  l  )

inline

Definition at line 739 of file InferWidths.cpp.

operator<<() [2/2]

template<typename T , typename std::enable_if< std::is_base_of< Expr, T >::value, int >::type = 0>

llvm::raw_ostream & operator<< ( llvm::raw_ostream &  os, const T &  e  )

inline

Allow rvalue refs to Expr and subclasses to be printed to streams.

Definition at line 95 of file InferWidths.cpp.

resizeType()

static FIRRTLBaseType resizeType ( FIRRTLBaseType  type, uint32_t  newWidth  )

static

Resize a uint, sint, or analog type to a specific width.

Definition at line 2138 of file InferWidths.cpp.

References circt::firrtl::FIRRTLTypeSwitch< T, ResultT >::Case(), and circt::firrtl::FIRRTLBaseType::isConst().

solveExpr()

static ExprSolution solveExpr ( Expr *  expr, SmallPtrSetImpl< Expr * > &  seenVars, std::vector< Frame > &  worklist  )

static

Compute the value of a constraint expr.

seenVars is used as a recursion breaker. Recursive variables are treated as zero. Returns the computed value and a boolean indicating whether a recursion was detected. This may be used to memoize the result of expressions in case they were not involved in a cycle (which may alter their value from the perspective of a variable).

Definition at line 878 of file InferWidths.cpp.

References computeBinary(), and computeUnary().