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better instruction selection when the popenvironment doesn't have to skip any frames.

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Danny Yoo 2011-03-27 00:03:19 -04:00
parent a640cfe083
commit 2c887255d8
1 changed files with 6 additions and 4 deletions
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10
assemble.rkt
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@ -285,10 +285,12 @@ EOF
"undefined")))
", "))]
[(PopEnvironment? stmt)
(format "MACHINE.env.splice(MACHINE.env.length-(~a),~a);"
(+ (PopEnvironment-skip stmt)
(PopEnvironment-n stmt))
(PopEnvironment-n stmt))])))
(if (= (PopEnvironment-skip stmt) 0)
(format "MACHINE.env.length = MACHINE.env.length - ~a;" (PopEnvironment-n stmt))
(format "MACHINE.env.splice(MACHINE.env.length-(~a),~a);"
(+ (PopEnvironment-skip stmt)
(PopEnvironment-n stmt))
(PopEnvironment-n stmt)))])))