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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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1
module/system/base/optimize.scm
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@ -47,6 +47,7 @@
(#:resolve-self-references? 2)
(#:devirtualize-integers? 2)
(#:specialize-numbers? 2)
(#:optimize-branch-chains? 2)
(#:licm? 2)
(#:rotate-loops? 2)
;; This one is used by the slot allocator.