re-ordering the lowering phases.
The changes in InterfaceLowering are necessary so that IrElements that
target the removed functions are re-targeted to the new functions in
DefaultImpls. This affects local functions in interface functions since
now LocalDeclarationsLowering comes before InterfaceLowering.
When a local function is captured, corresponding field accesses are
later transformed by the inliner. It doesn't have enough information to
restore the original semantics completely, so it has to rely on field
names. Local functions can be overloaded or can have names matching
local variable names, in both cases we generated fields with the same
name for captured values.
Now, we use the same '$<local-class-number>' suffix for field names for
local functions as it is present in the corresponding local class name.
This allows to distinguish captured local functions from captured local
variables and between different overloads of a function with the same
name.
#KT-19827 Fixed
#KT-18639 Fixed
Mark Punzalan