SSA meaning in Information Technology ?

Answer: What is Static Single Assignment mean?

In compiler design, static single assignment form (often abbreviated as SSA form or simply SSA) is a property of an intermediate representation (IR), which requires that each variable be assigned exactly once, and every variable be defined before it is used. Existing variables in the original IR are split into versions, new variables typically indicated by the original name with a subscript in textbooks, so that every definition gets its own version. In SSA form, use-def chains are explicit and each contains a single element.

SSA was proposed by Barry K. Rosen, Mark N. Wegman, and F. Kenneth Zadeck in 1988. Ron Cytron, Jeanne Ferrante and the previous three researchers at IBM developed an algorithm that can compute the SSA form efficiently.

One can expect to find SSA in a compiler for Fortran, C or C++, whereas in functional language compilers, such as those for Scheme and ML, continuation-passing style (CPS) is generally used. SSA is formally equivalent to a well-behaved subset of CPS excluding non-local control flow, which does not occur when CPS is used as intermediate representation. So optimizations and transformations formulated in terms of one immediately apply to the other.

reference

Full Form	Category
System Science Applications	Academic & Science
Shallow Self-Absorbed	Academic & Science
Same-Sex Attraction	Academic & Science
Seismological Society of America	Academic & Science
Soaring Society of America's	Academic & Science
Swiss Society of Aerobiology	Academic & Science
Stout Student Association	Academic & Science
Secular Student Alliance	Academic & Science
Student Success Advisor	Academic & Science
Succinic SemiAldehyde	Academic & Science
Secondary Switching Area	Academic & Science
Special Savings Account	Accounts and Finance
Salvador	Airport Code
Sistema JSFC	Business
Service Sector Assistant	Business
Sandhills Suri Alpacas, L. L. C.	Business
Saatchi & Saatchi, P. L. C.	Business
Self Storage Association	Business
Service Station Association	Business
Sovereigns Supranationals and Agencies	Business
Sulphosalicylic Acid	Chemistry
Shared Service Arrangement	Community
Soprano Soprano Alto	Community
Society of St. Andrew	Community
Safe School Ambassadors	Community
Survivors of Sexual Assault	Community
Society for the Study of Addiction	Community
Service Specialists Association	Community
Severn Sailing Association	Community
Specialty Sleep Association	Community
Singapore Soka Association	Community
School Superintendents of Alabama	Community
Secondary School Apprentice	Community
School Superintendent Assessment	Community
Sumi-e Society of America	Community
Stereo Source Amplifier	Computer Hardware
Slot-to-socket Adapter	Computer Hardware
System Security Administrator	Computing
Senior System Administrator	Computing
Secondary Security Administrator	Computing
Specific Support Actions	Computing
Smart Storage Administrator	Computing
Serial Storage Architecture	Computing
Sub Station Alpha	Computing
Start of Selected Area	Computing
Station Select Address	Computing
Sql Server Agent	Computing
Sygate Security Agent	Computing
Security Server Agent	Computing
Snmp Sub Agent	Computing
Self Servicing Account	Computing
Sun System Analysis	Computing
System Security Analysis	Computing
Super Systems Administrator	Computing
Super Spammers Anonymous	Computing
Software Subscription Agreement	Computing
Sub-saharan Africa	Country Specific
Segment Search Argument	Database Management
Solid State Amplifier	Electronics
Social Security account	General
Stochastic Simulation Algorithm	General
Social Security Ad	General
Server Side Application	General
Significant Scientific Agreement	General
Segment Search Arguments	General
Senior Special Agent	General
Sarv Shiksha Abhiyan	General
Special Service Area	General
Super Semi Automatic	General
Super Strong Arms	General
Short Sale Approval	General
Service Systems Associates	General
Sarv Siksha Abhiyan	General
Specific Surface Area	General
Side Saddle Association	General
Scaled Shape Ap	General
Static Simple Assignment	General
Stop Sign Assist	General
Start Stop Automatic	General
State Switching Absorber	General
Speedway Sedans Australia	General
Showroom Stock A	General
Shock Sensor Alarm	General
Safe System Approach	General
Safe Speed Assessment	General
Side Slip Angle	General
Subaru Southern Africa	General
Saab Scania of America	General
Suspension Specialists Association	General
Smart Shield Actuator	General
Sarva Shiksha Abhiyan	Goa Government
Street Skaters Association	Governmental
Social Security Act	Governmental
The Social Security Administration	Governmental
Sector-Specific Agencies	Governmental
Standard Spending Assessment	Governmental
Singular System Approach	Governmental
Secret Service Agent	Governmental
Social Security Administration	Healthcare
SIRSA	Indian Railway Station
Static Single Assignment	Information Technology
Super Smart A**	Internet
Supervisory Special Agent	Jobs
Side, Side, Angle	Maths
Streptococcal SuperAntigen	Medical
Single-Strand Annealing	Medical
Shared Services Agency	Medical
Sjoegrens Syndrome antigen A	Medical
Seronegative SpondyloArthropathy	Medical
Side-to-Side Anastomosis	Medical
Skin Sympathetic Activity	Medical
Superior Septal Approach	Medical
Super Smart Ass	Messaging
Shared Services Agreement	Messaging
Soldier Store Advance	Military and Defence
Standard Small Arms	Military and Defence
Space Situational Awareness	Military and Defence
Supply Support Activity	Military and Defence
Special Support Activity (nsa)	Military and Defence
Software Support Activity	Military and Defence
Strapdown Sensor Assembly	Military and Defence
Source Selection Authority	Military and Defence
Supply Support Area	Military and Defence
System Specification for Atccs (army Tactical Command and Control System)	Military and Defence
System Supportability Assessment	Military and Defence
Staff Support Activity	Military and Defence
Site System Administration	Networking
Single Static Assignment	Networking
Nilo-Saharan (Other)	Regional
Southern South America	Regional
Salvador, Buenos Aires, Brazil	Regional
Solar Survival Architecture	Space Science
S-band (1.98 To 2.2 Ghz) Single Access	Space Science
Shuttle Simulation Aircraft	Space Science
Space Suit Assembly	Space Science
Scratch Scoring Average	Sports
Soaring Society of America	Sports
Six Start Against	Sports
Sonic Stadium Awards	Sports
Sharp Shooters Association	Sports