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Macho more cleanup
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The following AST avoids unnecessary derefs now:
* error set decl
* field access
* array access
* for loops: replace ensure_indexable and deref on the len_ptr with a
special purpose ZIR instruction called indexable_ptr_len.
Added an error note when for loop operand is the wrong type.
I also accidentally implemented `@field`.
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* fix wrong pointer const-ness when unwrapping optionals
* allow grouped expressions and orelse as lvalues
* ZIR for unwrapping optionals: no redundant deref
- add notes to please don't use rlWrapPtr, this function should be
deleted
* catch and orelse: better ZIR for non-lvalue: no redundant deref;
operate entirely on values. lvalue case still works properly.
- properly propagate the result location into the target expression
* Test harness: better output when tests fail due to compile errors.
* TZIR: add instruction variants. These allow fewer TZIR instructions to
be emitted from zir_sema. See the commit diff for per-instruction
documentation.
- is_null
- is_non_null
- is_null_ptr
- is_non_null_ptr
- is_err
- is_err_ptr
- optional_payload
- optional_payload_ptr
* TZIR: removed old naming convention instructions:
- isnonnull
- isnull
- iserr
- unwrap_optional
* ZIR: add instruction variants. These allow fewer ZIR instructions to
be emitted from astgen. See the commit diff for per-instruction
documentation.
- is_non_null
- is_null
- is_non_null_ptr
- is_null_ptr
- is_err
- is_err_ptr
- optional_payload_safe
- optional_payload_unsafe
- optional_payload_safe_ptr
- optional_payload_unsafe_ptr
- err_union_payload_safe
- err_union_payload_unsafe
- err_union_payload_safe_ptr
- err_union_payload_unsafe_ptr
- err_union_code
- err_union_code_ptr
* ZIR: removed old naming convention instructions:
- isnonnull
- isnull
- iserr
- unwrap_optional_safe
- unwrap_optional_unsafe
- unwrap_err_safe
- unwrap_err_unsafe
- unwrap_err_code
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There was just some untested code that did not work. .isnull -> .isnonnull
and I had to add a .ref resultloc to make types match up.
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Also, force rewriting of code signature padding at every update so
that we take into account possible section relocs and expansion of
the last preceeding section, e.g., the string table.
This commit also tweak the logic responsible for managing debug lines
in `DebugSymbols`. In particular, in case we update the same function,
we'd previously incorrectly create a cycle adding pointer to the same
`SrcFn` to itself.
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Fixes a logical merge conflict that I didn't notice before.
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stage2: wasm - Refactor codegen for wasm similar to other backends
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Add support for L'<wchar_t>', u'<char16_t>', and U'<char32_t>'. Currently
this just translates wide char literals to \u{NNNNNN} escape codes
(e.g. U'💯' -> '\u{1f4af}')
Another approach would be to emit UTF-8 encoded character literals
directly, but in my opinion this approaches Unicode-complete because it
would require knowledge of which Unicode codepoints have graphical
representations for the emitted source to be readable.
We could also just emit integer literals, but the current method makes
it clear that we have translated a wide character literal and not just
an integer constant.
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Stage2 AArch64: Fix genSetStack
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offsets
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Now, we don't erroneously write to the string table on every
write of global and undef symbols.
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When codegen ends in failure, we need to manually clean up any fixups
that may have been gathered during that `codegen.generateSymbol` call.
Otherwise, we will end trapping.
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Fix typo in `nop` implementation.
Simplify `aarch64` macOS tests.
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Also fix incorrectly destroying notes.
This work is based on Vexu's patch in #7555.
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* Implement error notes
- note: other symbol exported here
- note: previous else prong is here
- note: previous '_' prong is here
* Add Compilation.CObject.ErrorMsg. This object properly converts to
AllErrors.Message when the time comes.
* Add Compilation.CObject.failure_retryable. Properly handles
out-of-memory and other transient failures.
* Introduce Module.SrcLoc which has not only a byte offset but also
references the file which the byte offset applies to.
* Scope.Block now contains both a pointer to the "owner" Decl and the
"source" Decl. As an example, during inline function call, the
"owner" will be the Decl of the caller and the "source" will be the
Decl of the callee.
* Module.ErrorMsg now sports a `file_scope` field so that notes can
refer to source locations in a file other than the parent error
message.
* Some instances where a `*Scope` was stored, now store a
`*Scope.Container`.
* Some methods in the `Scope` namespace were moved to the more specific
type, since there was only an implementation for one particular tag.
- `removeDecl` moved to `Scope.Container`
- `destroy` moved to `Scope.File`
* Two kinds of Scope deleted:
- zir_module
- decl
* astgen: properly use DeclVal / DeclRef. DeclVal was incorrectly
changed to be a reference; this commit fixes it. Fewer ZIR
instructions processed as a result.
- declval_in_module is renamed to declval
- previous declval ZIR instruction is deleted; it was only for .zir
files.
* Test harness: friendlier diagnostics when an unexpected set of errors
is encountered.
* zir_sema: fix analyzeInstBlockFlat by properly calling resolvingInst
on the last zir instruction in the block.
Compile log implementation:
* Write to a buffer rather than directly to stderr.
* Only keep track of 1 callsite per Decl.
* No longer mutate the ZIR Inst struct data.
* "Compile log statement found" errors are only emitted when there are
no other compile errors.
-femit-zir and support for .zir source files is regressed. If we wanted
to support this again, outputting .zir would need to be done as yet
another backend rather than in the haphazard way it was previously
implemented.
For parsing .zir, it was implemented previously in a way that was not
helpful for debugging. We need tighter integration with the test harness
for it to be useful; so clearly a rewrite is needed. Given that a
rewrite is needed, and it was getting in the way of progress and
organization of the rest of stage2, I regressed the feature.
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stage1: SPARCv9 f128 enablement
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In rare occassions, it may happen that string table is allocated free
space preceeding symbol table. This is an error in the eyes of the `dyld`
dynamic loader and thus has to forbidden by the linker.
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Fixes two scenarios where @boolToInt() calls were missing:
1. Boolean expression cast to different-size int (char, long, etc)
2. Boolean expression used as parameter for function with int argument
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organize std lib concurrency primitives and add RwLock
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It turns out I was wrong and we can set the page size to the actual
page size used by the target architecture when dividing the binary
into chunks and calculating a hash of each chunk for embedding within
the adhoc code signature. This shaves of a considerable amount of bytes
since we divide the code signature section by at least 2x.
I've also unified the `write` interface of `CodeSignature` struct to
follow that used in every other bit of `MachO`; namely, the functions
now accept a writer instead of a buffer, therefore, there is no need
to manually track where to write each struct field anymore.
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* move concurrency primitives that always operate on kernel threads to
the std.Thread namespace
* remove std.SpinLock. Nobody should use this in a non-freestanding
environment; the other primitives are always preferable. In
freestanding, it will be necessary to put custom spin logic in there,
so there are no use cases for a std lib version.
* move some std lib files to the top level fields convention
* add std.Thread.spinLoopHint
* add std.Thread.Condition
* add std.Thread.Semaphore
* new implementation of std.Thread.Mutex for Windows and non-pthreads Linux
* add std.Thread.RwLock
Implementations provided by @kprotty
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