Before merging, do this for every item in the file:
* solve the issue, or
* convert the task to a github issue and update the comment
to link to the issue (and remove "TODO" text from the comment).
Then delete the file.
Related: #363
The API is pretty specific to the implementationt details of the
self-hosted compiler. I don't want to have to independently support
and maintain this as part of the standard library, and be obligated
to not make breaking changes to it with changes to the implementation of
stage2.
* update to the new cache hash API
* std.Target defaultVersionRange moves to std.Target.Os.Tag
* std.Target.Os gains getVersionRange which returns a tagged union
* start the process of splitting Module into Compilation and "zig
module".
- The parts of Module having to do with only compiling zig code are
extracted into ZigModule.zig.
- Next step is to rename Module to Compilation.
- After that rename ZigModule back to Module.
* implement proper cache hash usage when compiling C objects, and
properly manage the file lock of the build artifacts.
* make versions optional to match recent changes to master branch.
* proper cache hash integration for compiling zig code
* proper cache hash integration for linking even when not compiling zig
code.
* ELF LLD linking integrates with the caching system. A comment from
the source code:
Here we want to determine whether we can save time by not invoking LLD when the
output is unchanged. None of the linker options or the object files that are being
linked are in the hash that namespaces the directory we are outputting to. Therefore,
we must hash those now, and the resulting digest will form the "id" of the linking
job we are about to perform.
After a successful link, we store the id in the metadata of a symlink named "id.txt" in
the artifact directory. So, now, we check if this symlink exists, and if it matches
our digest. If so, we can skip linking. Otherwise, we proceed with invoking LLD.
* implement disable_c_depfile option
* add tracy to a few more functions
into smaller exposed components and expose all of them. This makes it
more flexible.
`*const Cache` is now passed in with an open manifest dir handle which
the caller is responsible for managing.
Expose some of the base64 stuff.
Extract the hash helper functions into `HashHelper` and add some more
methods such as addOptional and addListOfFiles.
Add `CacheHash.toOwnedLock` so that you can deinitialize everything
except the open file handle which represents the file system lock on the
build artifacts.
Use ArrayListUnmanaged, saving space per allocated CacheHash.
Avoid 1 memory allocation in hit() with a static buffer.
hit() returns a bool; caller code is responsible for calling final() in
either case. This is a simpler and easier to use API.
writeManifest() is no longer called from deinit() with errors ignored.
Speed up a little the slicing-by-8 code path by replacing the
(load+shift+xor)*4 sequence with a single u32 load plus a xor.
Before:
```
iterative: 1018 MiB/s [000000006c3b110d]
small keys: 1075 MiB/s [0035bf3dcac00000]
```
After:
```
iterative: 1114 MiB/s [000000006c3b110d]
small keys: 1324 MiB/s [0035bf3dcac00000]
```
It turns out that the kernel won't read or write more than 0x7fffffff
bytes in a single call, failing with EINVAL when trying to do so.
Adjust the limit and curse whoever is responsible for this.
Closes#6332
Master branch added in the concept of library versioning being optional
to main.cpp. It will need to be re-added into this branch before merging
back into master.
A profiler run showed that the main bottleneck was the naive decoding of
the Huffman codes, replacing it with a nice trick borrowed by Zlib gave
a substantial speedup.
Replacing a `%` with a `and (mask-1)` gave another significant
improvement (yay for low hanging fruits).
A few numbers obtained by decompressing a 22M file:
Before:
```
./decompress 2,39s user 0,00s system 99% cpu 2,400 total
```
After:
```
./decompress 0,79s user 0,00s system 99% cpu 0,798 total
````
This commit changes the behavior of stage1 to emit libfoo.so instead
of libfoo.so.0.0.0 when none of the --ver-major, --ver-minor, or
--ver-patch flags are set.
It also makes it possible to create unversioned shared libraries
using the zig build system, changing the version parameter of
addSharedLibrary() to a tagged union.
std.event.Loop does not yet work in single threaded builds. However,
using evented io on a single thread can be very convenient. This commit
allows settind @import("root").event_loop_mode to .single_threaded
in order to allow this without reimplementing the startup code in
start.zig
* std.cache_hash exposes Hasher type
* std.cache_hash makes hasher_init a global const
* std.cache_hash supports cloning so that clones can share the same
open manifest dir handle as well as fork from shared hasher state
* start to populate the cache_hash for stage2 builds
* remove a footgun from std.cache_hash add function
* get rid of std.Target.ObjectFormat.unknown
* rework stage2 logic for resolving output artifact names by adding
object_format as an optional parameter to std.zig.binNameAlloc
* support -Denable-llvm in stage2 tests
* Module supports the use case when there are no .zig files
* introduce c_object_table and failed_c_objects to Module
* propagate many new kinds of data from CLI into Module and into
linker.Options
* introduce -fLLVM, -fLLD, -fClang and their -fno- counterparts.
closes#6251.
- add logic for choosing when to use LLD or zig's self-hosted linker
* stub code for implementing invoking Clang to build C objects
* add -femit-h, -femit-h=foo, and -fno-emit-h CLI options
Fixes a bug where the last written load command would accidentally
override the beginning of the __text section. Also defines missing
MachO constants and relocation structs/enums.
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
