this one is even harder to document then the last large overhaul.
TLDR;
- split apart Emit.zig into an Emit.zig and a Lower.zig
- created seperate files for the encoding, and now adding a new instruction
is as simple as just adding it to a couple of switch statements and providing the encoding.
- relocs are handled in a more sane maner, and we have a clear defining boundary between
lea_symbol and load_symbol now.
- a lot of different abstractions for things like the stack, memory, registers, and others.
- we're using x86_64's FrameIndex now, which simplifies a lot of the tougher design process.
- a lot more that I don't have the energy to document. at this point, just read the commit itself :p
this commit is a little too large to document fully, however the main gist of it this
- finish the `genInlineMemcpy` implement
- rename `setValue` to `genCopy` as I agree with jacob that it's a better name
- add in `genVarDbgInfo` for a better gdb experience
- follow the x86_64's method for genCall, as the procedure is very similar for us
- add `airSliceLen` as it's trivial
- change up the `airAddWithOverflow implementation a bit
- make sure to not spill of the elem_ty is 0 size
- correctly follow the RISC-V calling convention and spill the used calle saved registers in the prologue
and restore them in the epilogue
- add `address`, `deref`, and `offset` helper functions for MCValue. I must say I love these,
they make the code very readable and super verbose :)
- fix a `register_manager.zig` issue where when using the last register in the set, the value would overflow at comptime.
was happening because we were adding to `max_id` before subtracting from it.
this provides a much better indication of when we are having a controlled panic with an error message
or when we are actually segfaulting, as before the `trap` as causing a segfault.
the current implementation only works when the struct is in a register. we use some shifting magic
to get the field into the LSB, and from there, given the type provenance, the generated code should
never reach into the bits beyond the bit size of the type and interact with the rest of the struct.
we use a code offset map in Emit.zig to pre-compute what byte offset each MIR instruction is at. this is important because they can be
of different size
- From lib/libc/include/any-windows-any/wincon.h#L235
- See also https://learn.microsoft.com/en-us/windows/console/setconsolemode
- Also add DISABLE_NEWLINE_AUTO_RETURN constant which will be used by SetConsoleMode in lib/std/os/windows.
Co-authored-by: Kexy Biscuit <kexybiscuit@biscuitt.in>
release/18.x branch, commit 78b99c73ee4b96fe9ce0e294d4632326afb2db42
This adds the flag `-D_LIBCPP_HARDENING_MODE` which is determined based
on the Zig optimization mode.
This commit also fixes libunwind, libcxx, and libcxxabi to properly
report sub compilation errors.
* some manual fixes to generated CPU features code. In the future it
would be nice to make the script do those automatically.
* add to various target OS switches. Some of the values I was unsure of
and added TODO panics, for example in the case of spirv CPU arch.
New OSs:
* XROS
* Serenity
* Vulkan
Removed OSs:
* Ananas
* CloudABI
* Minix
* Contiki
New CPUs:
* spirv
The removed stuff is removed from LLVM but not Zig.
This allows running commands that take an output directory argument. The
main thing that was needed for this feature was generated file subpaths,
to allow access to the files in a generated directory. Additionally, a
minor change was required to so that the correct directory is created
for output directory args.
* `doc/langref` formatting
* upgrade `.{ .path = "..." }` to `b.path("...")`
* avoid using arguments named `self`
* make `Build.Step.Id` usage more consistent
* add `Build.pathResolve`
* use `pathJoin` and `pathResolve` everywhere
* make sure `Build.LazyPath.getPath2` returns an absolute path
This replaces `extra_file_dependencies` with support for lazy paths.
Also assert output file basenames are not empty, avoid improper use of
field default values, ensure stored strings are duplicated, and
prefer `ArrayListUnmanaged` to discourage misuse of direct field access
which wouldn't add step dependencies.
This was a "fake" type used to handle C varargs parameters, much like
generic poison. In fact, it is treated identically to generic poison in
all cases other than one (the final coercion of a call argument), which
is trivially special-cased. Thus, it makes sense to remove this special
tag and instead use `generic_poison_type` in its place. This fixes
several bugs in Sema related to missing handling of this tag.
Resolves: #19781
This function accepts a WaitGroup parameter and manages the reference
counting therein. It also is infallible.
The existing `spawn` function is still handy when the job wants to
further schedule more tasks.
