- A LINENUMEBER node is "dead" if the corresponding instruction interval
contains at least one "dead" bytecode instruction
and no live bytecode instructions
- Observable local variable lifetimes should be taken into account
when determining if a NOP is required for debugger.
Using basic constant propagation (only integer constants, no arithmetic
calculations), rewrite conditional jump instructions with constant
arguments.
This covers problem description in KT-17007.
Note that it also works transparently with inline functions.
Partial evaluation is required to cover more "advanced" cases.
As a side effect, this also covers KT-3098:
rewrite IF_ICMP<cmp_op>(x, 0) to IF<cmp0_op>(x).
Dmitry Petrov