In particular, define a static LibC library *in LibC's CMakeLists* and
use it in DynamicLoader. This is similar to the way LibELF is included
in DynamicLoader.
Additionally, compile DynamicLoader with -ffunction-sections,
-fdata-sections, and -Wl,--gc-sections. This brings the loader size from
~2Mb to ~1Mb with debug symbols and from ~500Kb to ~150Kb without. Also,
this makes linking DynamicLoader with LibTimeZone unnecessary.
Static libc on Serenity is broken in a more than one way and requires a
lot of patches to bring it to a usable and useful state. Therefore,
instead of keeping it around (and breaking even more) during the
upcoming libc build refactor, let's just delete it.
Previously, if DynamicLoader was invoked directly, it wouldn't be able
to perform syscalls after the point just before the call to the main
executable entry. This made dlopen to crash if it was invoked from
within an executable that was itself executed using
`/usr/lib/Loader.so <executable>`.
The fix can be tested by executing
`cd /usr/Tests/LibELF; /usr/lib/Loader.so /usr/Tests/LibELF/TestDlOpen`
in Serenity's terminal.
Unfortunately a composite action cannot have a `post:` step like
JavaScript actions are allowed to have, so we need to explicitly call
the post/save actions ourselves from the workflow file when we want to
save Toolchain/QEMU/ccache caches.
Co-Authored-By: Timothy Flynn <trflynn89@pm.me>
Xcode clang doesn't understand the -std=c++23 spelling yet, and this
is what CMake's `set(CMAKE_CXX_STANDARD 23)` translates to too.
Unbreaks building with Xcode clang on macOS.
Explicit template arguments must be wrapped in parens,
else they confuse the preprocessor.
Add the parens instead of avoiding the use of explicit template
arguments.
No behavior change.
That way, we can write 0 instead of 8 bits for every alpha byte.
Reduces the size of sunset-retro.png when saved as a webp file
from 3 MiB to 2.25 MiB, without affecting encode speed.
Once we use CanonicalCodes we'll get this for free for all channels,
but opaque images are common enough that it feels worth it to do this
before then.
Bilevel images are not required to have a BitsPerSample or a
SamplesPerPixel tag, while this is unusual these images are still valid.
The test case has been generated by first making a copy of
ccitt3_1d_fill.tiff and then, using `tiffset` to remove both tags:
tiffset -u 258 ccitt3_no_tags.tiff
tiffset -u 277 ccitt3_no_tags.tiff
If we don't have enough stack space, throw an exception while we still
can, and give the caller a chance to recover.
This particular problem will go away once we make calls non-recursive.
This means inlining all the things. This yields a 40% speedup on the for
loop microbenchmark, and everything else gets faster as well. :^)
This makes compilation take foreeeever with GCC, so I'm only enabling it
for Clang in this commit. We should figure out how to make GCC compile
this without timing out CI, since the speedup is amazing.
This commit converts the main loop in Bytecode::Interpreter to use a
label table and computed goto for fast instruction dispatch.
This yields roughly 35% speedup on the for loop microbenchmark,
and makes everything else faster as well. :^)
