Annotate each Field in PhvInfo with the instructions it's involved in. More...

#include <cluster_phv_operations.h>

Inheritance diagram for PHV_Field_Operations:

Public Member Functions
	PHV_Field_Operations (PhvInfo &phv_f)

Public Member Functions inherited from P4::Inspector
const IR::Node *	apply_visitor (const IR::Node , const char name=0) override

profile_t	init_apply (const IR::Node *root) override

virtual void	loop_revisit (const IR::Node *)

virtual void	postorder (const IR::Node *)

virtual bool	preorder (const IR::Node *)

virtual void	revisit (const IR::Node *)

void	revisit_visited ()

bool	visit_in_progress (const IR::Node *n) const

void	visitAgain () const override

void	visitOnce () const override

Public Member Functions inherited from P4::Visitor
virtual bool	check_global (cstring)

virtual void	clear_globals ()

virtual Visitor *	clone () const

virtual ControlFlowVisitor *	controlFlowVisitor ()

virtual void	end_apply ()

virtual void	end_apply (const IR::Node *root)

virtual void	erase_global (cstring)

template<class T >
const T *	findContext () const

template<class T >
const T *	findContext (const Context *&c) const

template<class T >
const T *	findOrigCtxt () const

template<class T >
const T *	findOrigCtxt (const Context *&c) const

virtual Visitor &	flow_clone ()

virtual void	flow_merge (Visitor &)

virtual bool	flow_merge_closure (Visitor &)

virtual void	flow_merge_global_from (cstring)

virtual void	flow_merge_global_to (cstring)

const Context *	getChildContext () const

int	getChildrenVisited () const

const Context *	getContext () const

int	getContextDepth () const

const IR::Node *	getCurrentNode () const

template<class T >
const T *	getCurrentNode () const

const IR::Node *	getOriginal () const

template<class T >
const T *	getOriginal () const

template<class T >
const T *	getParent () const

virtual bool	has_flow_joins () const

profile_t	init_apply (const IR::Node root, const Context parent_context)

bool	isInContext (const IR::Node *n) const

virtual const char *	name () const

template<class T >
void	parallel_visit (const IR::Vector< T > &v, const char *name, int cidx)

template<class T >
void	parallel_visit (const IR::Vector< T > &v, const char *name=0)

template<class T >
void	parallel_visit (IR::Vector< T > &v, const char *name, int cidx)

template<class T >
void	parallel_visit (IR::Vector< T > &v, const char *name=0)

void	print_context () const

const Visitor &	setCalledBy (const Visitor *visitor)

void	setName (const char *name)

void	visit (const IR::Node &n, const char *name, int cidx)

void	visit (const IR::Node &n, const char *name=0)

void	visit (const IR::Node &n, const char name, int cidx)

void	visit (const IR::Node &n, const char name=0)

void	visit (const IR::Node const &n, const char name, int cidx)

void	visit (const IR::Node const &n, const char name=0)

void	visit (IR::Node &n, const char *name, int cidx)

void	visit (IR::Node &n, const char *name=0)

void	visit (IR::Node &, const char =0, int=0)

template<class T , typename = std::enable_if_t<Util::has_SourceInfo_v<T> && !std::is_pointer_v<T>>, class... Args>
void	warn (const int kind, const char *format, const T &node, Args &&...args)
	The const ref variant of the above.

template<class T , typename = std::enable_if_t<Util::has_SourceInfo_v<T>>, class... Args>
void	warn (const int kind, const char format, const T node, Args &&...args)

bool	warning_enabled (int warning_kind) const

Static Public Attributes
static const ordered_set< cstring >	BITWISE_OPS

static const ordered_set< cstring >	SATURATE_OPS

static const ordered_set< cstring >	SHIFT_OPS

Additional Inherited Members
Public Types inherited from P4::Visitor
typedef Visitor_Context	Context

Static Public Member Functions inherited from P4::Visitor
static cstring	demangle (const char *)

static bool	warning_enabled (const Visitor *visitor, int warning_kind)

Public Attributes inherited from P4::Visitor
const Visitor *	called_by = nullptr

cstring	internalName

SplitFlowVisit_base *&	split_link

SplitFlowVisit_base *	split_link_mem = nullptr

Protected Member Functions inherited from P4::Visitor
virtual void	init_join_flows (const IR::Node *)

virtual bool	join_flows (const IR::Node *)

virtual void	post_join_flows (const IR::Node , const IR::Node )

void	visit_children (const IR::Node *, std::function< void()> fn)

Protected Attributes inherited from P4::Visitor
bool	dontForwardChildrenBeforePreorder = false

bool	joinFlows = false

bool	visitDagOnce = true

Detailed Description

Annotate each Field in PhvInfo with the instructions it's involved in.

Specifically, include the name of the instruction, whether it is a move-based instruction, and whether it is read, written, both, or invalidated. This information is stored in the Field.operations field.

Precondition: An up-to-date PhvInfo data structure.

Postcondition: The operations field of all Field objects in phv_f will be populated.

Member Data Documentation

◆ BITWISE_OPS

const ordered_set< cstring > PHV_Field_Operations::BITWISE_OPS

static

Initial value:

= {"set"_cs,   "conditionally-set"_cs,
                                                                "and"_cs,   "or"_cs,
                                                                "not"_cs,   "nor"_cs,
                                                                "andca"_cs, "andcb"_cs,
                                                                "nand"_cs,  "orca"_cs,
                                                                "orcb"_cs,  "xnor"_cs,
                                                                "xor"_cs}

"Bitwise" operations are ALU instructions that operate independently on each bit of the source(s) and destination. For example, a logical AND operation is bitwise, because dst[i] = src1[i] & src2[i] for each bit i.

Operands of bitwise instructions can be split across PHV containers, because bitwise instructions themselves can be split across ALUs. Operands of non-bitwise instructions, on the other hand, cannot be split, with the exception of certain arithmetic operations that can be split across adjacent (even/odd) PHV containers.

The following instructions are bitwise.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

SPDX-License-Identifier: Apache-2.0

◆ SATURATE_OPS

const ordered_set< cstring > PHV_Field_Operations::SATURATE_OPS

static

Initial value:

= {"saddu"_cs, "sadds"_cs, "ssubu"_cs,

"ssubs"_cs}

◆ SHIFT_OPS

const ordered_set< cstring > PHV_Field_Operations::SHIFT_OPS

static

Initial value:

= {"shl"_cs, "shru"_cs, "shrs"_cs,

"funnel-shift"_cs}

Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Member Data Documentation

◆ BITWISE_OPS

◆ SATURATE_OPS

◆ SHIFT_OPS