compiler.cfg.ssa.destruction: a bunch of new docs

diff --git a/basis/compiler/cfg/ssa/destruction/destruction-docs.factor b/basis/compiler/cfg/ssa/destruction/destruction-docs.factor
index d910e80a4fe2b2eb8b7aed5cb5ce52850a46a202..1c10ca97acc5c3d218068e7518ccbfb093440ea5 100644 (file)
--- a/basis/compiler/cfg/ssa/destruction/destruction-docs.factor
+++ b/basis/compiler/cfg/ssa/destruction/destruction-docs.factor
@@ -2,10 +2,27 @@ USING: compiler.cfg compiler.cfg.instructions
 compiler.cfg.ssa.destruction.private help.markup help.syntax ;
 IN: compiler.cfg.ssa.destruction
 
+HELP: class-element-map
+{ $var-description "Maps leaders to equivalence class elements." } ;
+
 HELP: cleanup-cfg
 { $values { "cfg" cfg } }
 { $description "In this step, " { $link ##parallel-copy } " instructions are substituted with more concreete " { $link ##copy } " instructions. " { $link ##phi } " instructions are removed here." } ;
 
+HELP: copies
+{ $var-description "Sequence of copies (tuples of { vreg-dst vreg-src}) that maybe can be eliminated later." }
+{ $see-also init-coalescing } ;
+
+HELP: maybe-eliminate-copy
+{ $values { "vreg1" "vreg" } { "vreg2" "vreg" } }
+{ $description "Eliminate a copy if possible." }
+{ $see-also must-eliminate-copy } ;
+
+HELP: must-eliminate-copy
+{ $values { "vreg1" "vreg" } { "vreg2" "vreg" } }
+{ $description "Eliminates a copy." }
+{ $see-also maybe-eliminate-copy } ;
+
 ARTICLE: "compiler.cfg.ssa.destruction" "SSA Destruction"
 "Because of the design of the register allocator, this pass has three peculiar properties."
 { $list