register allocation - definizione. Che cos'è register allocation
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Cosa (chi) è register allocation - definizione

PROCESS OF ASSIGNING A LARGE NUMBER OF TARGET PROGRAM VARIABLES ONTO A SMALL NUMBER OF CPU REGISTERS
Register spilling; Register spill; Global graph coloring register allocation; Register allocator; Live range; Register allocation by graph coloring; Spilling a register
  • Chaitin et al.'s iterative graph coloring based register allocator
  • Intel 386 registers
  • Shorter live ranges with SSA approach

register allocation         
<compiler, algorithm> The phase of a compiler that determines which values will be placed in registers. Register allocation may be combined with {register assignment}. This problem can be shown to be isomorphic to {graph colouring} by relating values to nodes in the graph and registers to colours. Values (nodes) which must be valid simultaneously are linked by edges and cannot be stored in the same register (coloured the same). See also register dancing and register spilling. [Preston Briggs, PhD thesis, Rice University, April 1992 {"Register Allocation via Graph Coloring" (ftp://ftp.cs.rice.edu/public/preston/thesis.ps.gz)}]. (2000-12-04)
Register allocation         
In compiler optimization, register allocation is the process of assigning local automatic variables and expression results to a limited number of processor registers.
register spilling         
<programming, compiler> (By analogy with spilling the contents of an overfull container) When a compiler is generating machine code and there are more live variables than the machine has registers and it has to transfer or "spill" some variables from registers to memory. (1997-06-24)

Wikipedia

Register allocation

In compiler optimization, register allocation is the process of assigning local automatic variables and expression results to a limited number of processor registers.

Register allocation can happen over a basic block (local register allocation), over a whole function/procedure (global register allocation), or across function boundaries traversed via call-graph (interprocedural register allocation). When done per function/procedure the calling convention may require insertion of save/restore around each call-site.