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This change eliminates some problematic recursive logic in InternPool,
and provides a safer API.
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Closes #13178
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This reduces generic instantiations of several write functions.
Before:
```
@as(type, io.writer.Writer(*array_list.ArrayListAligned(u8,null),error{OutOfMemory},(function 'appendWrite')))
@as(type, io.writer.Writer(*codegen.c.IndentWriter(io.writer.Writer(*array_list.ArrayListAligned(u8,null),error{OutOfMemory},(function 'appendWrite'))),error{OutOfMemory},(function 'write')))
```
After:
```
@as(type, io.GenericWriter(io.Writer,error{OutOfMemory},(function 'write')))
```
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Fix some generic{Reader,Writer} related issues
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Closes #18723
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Closes #17996
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Closes #18550
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closes #18461
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Closes #18428
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Closes #17817
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This reverts commit 2b589783602c5428ecde9dbb3f41a81f85eb0f25.
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mainly pertaining to error return tracing
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implement builtin.zig file population for all modules rather than
assuming there is only one global builtin.zig module.
move some fields from link.File to Compilation
move some fields from Module to Compilation
compute debug_format in global Compilation config resolution
wire up C compilation to the concept of owner modules
make whole cache mode call link.File.createEmpty() instead of
link.File.open()
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These options are only supposed to be provided to the initialization
functions, resolved, and then computed values stored in the appropriate
place (base struct or the object-format-specific structs).
Many more to go...
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Much of the logic from Compilation.create() is extracted into
Compilation.Config.resolve() which accepts many optional settings and
produces concrete settings. This separate step is needed by API users of
Compilation so that they can pass the resolved global settings to the
Module creation function, which itself needs to resolve per-Module
settings.
Since the target and other things are no longer global settings, I did
not want them stored in link.File (in the `options` field). That options
field was already a kludge; those options should be resolved into
concrete settings. This commit also starts to work on that, deleting
link.Options, moving the fields into Compilation and
ObjectFormat-specific structs instead. Some fields were ephemeral and
should not have been stored at all, such as symbol_size_hint.
The link.File object of Compilation is now a `?*link.File` and `null`
when -fno-emit-bin is passed. It is now arena-allocated along with
Compilation itself, avoiding some messy cleanup code that was there
before.
On the command line, it is now possible to configure the standard
library itself by using `--mod std` just like any other module. This
meant that the CLI needed to create the standard library module rather
than having Compilation create it.
There are a lot of changes in this commit and it's still not done. I
didn't realize how quickly this changeset was going to balloon out of
control, and there are still many lines that need to be changed before
it even compiles successfully.
* introduce std.Build.Cache.HashHelper.oneShot
* add error_tracing to std.Build.Module
* extract build.zig file generation into src/Builtin.zig
* each CSourceFile and RcSourceFile now has a Module owner, which
determines some of the C compiler flags.
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This reverts commit 7161ed79c4abcaccdd56fe0b4fbd3d93472d41b8, reversing
changes made to 3f2a65594e1d3c0a4f4943a4ea522e8405db81e0.
Unfortunately, this sat in the PR queue too long and the merge broke the
zig1.wasm bootstrap process.
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cbe: add a system for avoiding collisions with C compiler intrinsics
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I need some indices for a thing...
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This enables the compiler to generate a structured cfg even in opencl,
even if it is not strictly required by the SPIR-V Kernel specification.
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A parameter like this is not always optional, even if that is
usually implied. SPIR-V tools fail to parse a module with an
OpLoopMerge instruction where the loop control parameter is
left out.
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The motivating problem here was a memory leak in the hash maps of
Module.Namespace.
The commit deletes more of the legacy incremental compilation
implementation. It had things like use of orderedRemove and trying to do
too much OOP-style creation and deletion of objects.
Instead, this commit iterates over all the namespaces on Module deinit
and calls deinit on the hash map fields. This logic is much simpler to
reason about.
Similarly, change global inline assembly to an array hash map since
iterating over the values is a primary use of it, and clean up the
remaining values on Module deinit, solving another memory leak.
After this there are no more memory leaks remaining when using the
x86 backend in a libc-less compiler.
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llvm: workaround SROA misoptimizations in LLVM
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Workaround #16392
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This was regressed in d657b6c0e2ab7c47f5416dc4df1abb2bfbecd4b6, when
the comptime memory model for unions was changed to allow them to have
no defined tag type.
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symbols under a different name
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Changes:
- Add `isMangledIdent` to determine if `fmtIdent` would make any edits to the identifier
- Any function that has a mangled identifier is referred to using the mangled identifer
within the current file, but if it is exported the first export will be with the non-mangled name.
- Add `zig_import` to import a symbol under a different name
- Add a level of indirection to float function names. Now, they are referred to as
`zig_float_fn_<float type>_<operation>`. The definitions in zig.h are wrapped
with `zig_import` to import the symbol under the real name.
The specific problem that sparked this change was the combination of
`zig_libc_name_f80(name) __##name##x` with the input `fma`, resulting
in `__fmax`, which is a new intrinsic in recent versions of cl.exe.
With the above changes in place, compiler_rt can output the following:
```
static zig_weak_linkage_fn zig_f80 zig_e___fmax(zig_f80, zig_f80, zig_f80);
zig_export(zig_weak_linkage_fn zig_f80 zig_e___fmax(zig_f80, zig_f80, zig_f80), __fmax, "__fmax");
```
Within compiler_rt, `zig_e___fmax` is used to refer to the function, but consumers
will import `__fmax`, which maps to their `zig_float_fn_f80_fma` definition from zig.h.
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