Dmitry Petrov f1b061d662 Optimize coercion to Unit. ...

POP operations are backward-propagated.

Operation can't be transformed if its result is moved within stack
(by DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, or SWAP).

Unnecessary operations are replaced with NOPs (for debugger).
Unnecessary NOPs are removed.

KT-9922 Suboptimal generation for simple safe call with unused return value
KT-11116 Optimize methods returning Unit

2016-04-07 11:40:58 +03:00

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