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Add tag-fixnum instruction

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* libguile/vm-engine.c (tag-fixnum): New instruction.
* module/language/cps/compile-bytecode.scm (compile-function):
* module/language/cps/cse.scm (compute-equivalent-subexpressions):
* module/language/cps/effects-analysis.scm:
* module/language/cps/types.scm (&min/fixnum, &max/fixnum, tag-fixnum):
* module/system/vm/assembler.scm: Add support for the new instruction.
This commit is contained in:
Andy Wingo 2017-11-09 14:18:01 +01:00
parent 7bfdd46ea5
commit 8b5f9648ff
6 changed files with 27 additions and 2 deletions
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2
module/language/cps/compile-bytecode.scm
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@ -271,6 +271,8 @@
(from-sp (slot expected)) (from-sp (slot desired))))
(($ $primcall 'untag-fixnum #f (src))
(emit-untag-fixnum asm (from-sp dst) (from-sp (slot src))))
(($ $primcall 'tag-fixnum #f (src))
(emit-tag-fixnum asm (from-sp dst) (from-sp (slot src))))
(($ $primcall name #f args)
;; FIXME: Inline all the cases.
(let ((inst (prim-instruction name)))