machine: Val(x,s,Return(x)) -> s #241
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In particular. PolymorphismBoxing generates code of this form sometimes Other phases might, too (someday). This is analogous to the special case for Run(Return(...)), and avoids pushing the unnecessary stack frame.
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cc @phischu |
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Currently,
machine.Transformergenerates an unnecessaryPushFramewhen given lifted code likeIn particular, PolymorphismBoxing generates code of this form sometimes. Other phases might, too (someday).
This is analogous to the special case for Run(Return(...)), and avoids pushing the unnecessary stack frame.