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added to compile-install-value so it installs using multiple-values

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This commit is contained in:
Danny Yoo 2011-04-28 13:44:33 -04:00
parent 91e6172298
commit 297a0d10ea
1 changed files with 39 additions and 4 deletions
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43
compiler.rkt
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@ -1391,10 +1391,45 @@
(: compile-install-value (InstallValue CompileTimeEnvironment Target Linkage -> InstructionSequence))
(define (compile-install-value exp cenv target linkage)
(compile (InstallValue-body exp)
cenv
(make-EnvLexicalReference (InstallValue-depth exp) (InstallValue-box? exp))
linkage))
(let ([count (InstallValue-count exp)])
(cond [(= count 0)
(end-with-linkage
linkage
cenv
(compile (InstallValue-body exp)
cenv
target
(make-NextLinkage 0)))]
[(= count 1)
(end-with-linkage
linkage
cenv
(compile (InstallValue-body exp)
cenv
(make-EnvLexicalReference (InstallValue-depth exp) (InstallValue-box? exp))
(make-NextLinkage 1)))]
[else
(end-with-linkage
linkage
cenv
(append-instruction-sequences
(compile (InstallValue-body exp)
cenv
'val
(make-NextLinkage count))
(apply append-instruction-sequences
(map (lambda: ([to : EnvLexicalReference]
[from : OpArg])
(make-instruction-sequence
`(,(make-AssignImmediateStatement to from))))
(build-list count (lambda: ([i : Natural])
(make-EnvLexicalReference (+ i (InstallValue-depth exp))
(InstallValue-box? exp))))
(cons (make-Reg 'val)
(build-list (sub1 count) (lambda: ([i : Natural])
(make-EnvLexicalReference i #f))))))
(make-instruction-sequence
`(,(make-PopEnvironment (make-Const (sub1 count)) (make-Const 0))))))])))