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Add new pass to optimize branch chains to table dispatch

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* module/language/cps/switch.scm: New pass.

* module/Makefile.am (SOURCES):
* am/bootstrap.am (SOURCES): Add switch.scm.

* module/system/base/optimize.scm (available-optimizations):
* module/language/cps/optimize.scm (optimize-first-order-cps): Run
  switch optimization at level 2.

* libguile/hash.c (JENKINS_LOOKUP3_HASHWORD2): Add note regarding
  cross-compilation.

* module/language/cps/graphs.scm (intmap-select): New definition.
* module/language/cps/utils.scm (compute-singly-referenced-labels): Move
  here, from various places.  Doesn't take a body intset argument.

* module/language/cps/contification.scm:
* module/language/cps/closure-conversion.scm:
* module/language/cps/simplify.scm: Use compute-singly-referenced-labels
  from utils.

* module/language/cps/effects-analysis.scm (annotation->memory-kind*):
  (annotation->memory-kind): Add symbol annotation cases.
This commit is contained in:
Andy Wingo 2020-08-11 23:09:51 +02:00
parent cd5ab6377b
commit 03998db647
13 changed files with 488 additions and 98 deletions
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2
module/language/cps/optimize.scm
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@ -40,6 +40,7 @@
#:use-module (language cps specialize-numbers)
#:use-module (language cps specialize-primcalls)
#:use-module (language cps split-rec)
#:use-module (language cps switch)
#:use-module (language cps type-fold)
#:use-module (language cps verify)
#:use-module (system base optimize)
@ -107,6 +108,7 @@
(specialize-primcalls #:specialize-primcalls?)
(eliminate-common-subexpressions #:cse?)
(eliminate-dead-code #:eliminate-dead-code?)
(optimize-branch-chains #:optimize-branch-chains?)
;; Running simplify here enables rotate-loops to do a better job.
(simplify #:simplify?)
(rotate-loops #:rotate-loops?)