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diff --git a/content/zettel/1c5a.md b/content/zettel/1c5a.md new file mode 100644 index 0000000..112bc3d --- /dev/null +++ b/content/zettel/1c5a.md @@ -0,0 +1,30 @@ ++++ +title = "Components of Register Allocation" +author = "Yann Herklotz" +tags = [] +categories = [] +backlinks = ["1c5"] +forwardlinks = ["1c5b"] +zettelid = "1c5a" ++++ + +Move insertion + +: This consists of increasing the number of moves so that the variable + can live in various registers over its lifetime. This occurs in the + split live range approach. + +Spilling + +: This consists of storing a variable to memory because there aren't + enough registers available. + +Assignment + +: This consists of assigning a register to a variable. + +Coalescing +: This consists of limiting the number of move instructions, thereby + reducing the total number of instructions. This can be done by + identifying variables that are live over various blocks and storing + it constantly in one variable. |