During a translation of the code from js() call to statement list,
the compiler folds the code string. For that it uses property bodies.
However the bodies can not be loaded in an incremental rebuild.
The patch uses the backing field initializers of constant properties.
The initializers are always loaded.
^KT-57002 Fixed
The IR linker is responsible for detecting unbound symbols,
if it skips them for some reason, IC infrastructure must not fail
with unbound symbols exceptions. Anyway, the IR validator
verifies later if there are unbound symbols in
reachable IR and generates the corresponding error.
^KT-56602 Fixed
If a developer interrupts (kill gradle process) a compilation process or
an internal error interrupts the compilation process,
the incremental cache files may be corrupted.
The patch creates a special guard file, which allows detecting
if the previous compilation was not successful,
and in case of any issues drops the incremental cache files.
^KT-56581 Fixed
JS IR BE incremental compilation infrastructure uses
LanguageVersionSettings::toString method to detect if any
compiler features or flags were enabled or disabled.
It is important that the features and flags order are stable
in the result string.
^KT-56580 Fixed
The dependency signature may refer to function type interface properties
(e.g. name) or methods. It is impossible to detect (without hacks)
which binary symbol for loading is required. However, when loading
a property or a method the entire function type interface is loaded.
And vice versa, a loading of function type interface loads
properties and methods as well. Therefore, load the top level signature only,
it must be the signature of function type interface.
^KT-56582 Fixed
Source mapping URL is not saved in JS module cache anymore,
because it was a wrong url pointed to the source map from the cache.
Instead, the URL is appended every time on writing the output JS code.
^KT-56469 Fixed
The patch removes logic of generating extra IrFiles (fake file) into
IrModuleFragment for the function type interfaces during klib deserialization,
because IC infrastructure can not process files which do not exist in klib.
Instead of adding extra IrFiles during deserialization, the empty files
with required packages are added into Kotlin/JS stdlib physically.
These files are used as containers for function type interface declarations.
Since Kotlin/WASM uses the same klib loading infrastructure as Kotlin/JS,
the the empty files are added into Kotlin/WASM stdlib as well.
The patch also adds a check that IrModuleFagment has files only from klib.
^KT-55720 Fixed
Optimizaion: instead of reading all non modified JS files
from the cache into the memory at once, the patch allows
copying non-modified JS files from disk one by one
during the compilation output writing routine.
Optimization: instead of calculating fingerprints manually each time
the patch allows using precalculated fingerprints from the klib.
Optimization: share one md5 digest for all IC infrastructure.
Optimization: often we don't need all hashes for all available symbols.
This patch allows the calculation of the symbol hash only on demand.
This patch also allows cycles for the inline function dependency
graph in the IC infrastructure. Note that the inline function cycles
may crash the inliner, however it is not the IC infrastructure
responsibility to check the cycles.
If inline function A calls another inline function B,
we must use the original version of inline function A for inlining,
which doesn’t have inlined function B. Because during the inlining
process, we remap all occurrences of inline function A
to a temporary copy of function A, and if the function B
somehow uses function A (e.g. callable reference),
the built IR will have a reference to the temporary function,
not the original one. All these things lead to broken cross-module references.
This patch saves the original versions of all inline functions
before inlining and provides them during the inline process.
^KT-55930 Fixed
We do not need to check a default implementation of the interface during
the translation to JS because it must be checked before.
Moreover, this check breaks the produced JS code
if IR is partial loaded, e.g. during the incremental rebuild.
^KT-55716 Fixed
The patch adds an error if the module can not find the cross-module reference.
The patch removes the DCE optimization which eliminates implement() intrinsic,
because it leads to a broken cross-module reference and
broken JS code with implement() call, albeit in an unreachable block.
Ivan Kylchik