Computing liveness sets for ssa-form programs
WebBibTeX @MISC{Brandner11computingliveness, author = {Florian Brandner and Benoit Boissinot and Alain Darte and Benoît Dupont De Dinechin and Fabrice Rastello}, title = … WebBibTeX @MISC{Brandner11computingliveness, author = {Florian Brandner and Benoit Boissinot and Alain Darte and Benoît Dupont De Dinechin and Fabrice Rastello}, title = {Computing Liveness Sets for SSA-Form Programs}, year = {2011}}
Computing liveness sets for ssa-form programs
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Web2.1. Liveness in SSA-form programs To perform register allocation on SSA-form pro-grams, a precise notion of liveness is needed. The stan-dard definition of liveness A variable v is live at a label , if there is a path from to a usage of vnot containing a definition of . cannot be straightforwardly transferred to SSA-form programs. WebIn this work we devise an efficient algorithm that computes the liveness information of program variables. The algorithm employs SSA form and DJ-graphs as representation to build Merge sets. The Merge set of node n, M(n) is based on the structure of the Control Flow Graph (CFG) and consists of all nodes where a ϕ-function needs to be placed, if a …
WebMay 31, 2006 · Liveness in SSA-form programs To perform register allocation on SSA-form pro- grams, a precise notion of liveness is needed. The stan- dard definition of liveness A variable v is live at a label lscript, if there is a path from lscript to a usage of v not containing a definition of v. cannot be straightforwardly transferred to SSA-form programs. Webpute liveness sets for SSA-form programs. The properties of SSA form are exploited in order to avoid the expensive iterative fixed-point computation. In-stead, at most two …
Webgrams are called program representations. In this survey, we rst study four data structures that can help us dissect the code structure and dig deep structural proper-ties. Then, we discuss the popular representations used in contemporary compiler, the single static assignment (SSA) form and its variants, which enable e cient program WebJun 12, 2024 · Code generators for optimizing compilers benefit from a program SSA form for the analyses and transformations of machine code between instruction selection and register allocation. ... Boissinot, B., et al. (2011). A non-iterative data-flow algorithm for computing liveness sets in strict SSA programs. In Asian Symposium on …
WebWe revisit the problem of computing liveness sets (the sets of variables live-in and live-out of basic blocks) for programs in strict static single assignment (SSA). In strict SSA, aka SSA with dominance property, the definition of a variable always dominates all its uses.
WebIn this work we devise an efficient algorithm that computes the liveness information of program variables. The algorithm employs SSA form and DJ-graphs as representation to build Merge sets. The Merge set of node n, M(n) is based on the structure of the Control Flow Graph (CFG) and consists of all nodes where a φ-function needs to be placed ... platinum heritage luxury tours \u0026 safarisWebThe SSA form is a popular compiler intermediate language allowing for simple and fast optimizations. Boissinot et al. [7] designed a fast liveness analysis by combining the … prillwitz farmsWebWe revisit the problem of computing liveness sets (the sets of variables live-in and live-out of basic blocks) for programs in strict static single assignment (SSA). In strict SSA, aka … prill water beadsWebcisely describe our model of a program, the SSA-form of a program and the notion of liveness in our setting. In section 3, we quote some basic definitions from graph theory. Finally, in section 4, we prove that the interference graphs of programs in SSA-form are chordal. 2 Prerequisites 2.1 Programs We assume a program to be given by its ... prillwitz farm michiganWebJun 6, 2024 · This work formalizes a fast liveness analysis by combining the specific properties of SSA with graph-theoretic ideas such as depth-first search and dominance … prillwitz hagenowWebJun 24, 2024 · liveness chec king for ssa-form programs. In: Soffa, M.L., Duesterwald, E. ... We revisit the problem of computing liveness sets (the sets of variables live-in and … prillwitz pommernWebThe SSA form is a popular compiler intermediate language allowing for simple and fast optimizations. Boissinot et al. designed a fast liveness analysis by combining the specific properties of SSA with graph-theoretic ideas such as depth-first search and dominance. We formalize their approach in the Coq proof assistant, inside the CompCertSSA ... prilly adobes