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The data structure was originally added in
41e1cd185b82a518c58c92544c45f0348c03ef74 and then removed in
50a336fff899ebd8a687c453ec6beb18a5a9baf9, but brought back in
711bf55eaa643c3d05640bebbf3e4315477b8ed8 for Decl in the compiler
frontend, and then the last reference to it was eliminated in
548a087fafeda5b07d2237d5137906b8d07da699 which removed Decl in favor of
Nav and Cau.
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Co-authored-by: Matthew Lugg <mlugg@mlugg.co.uk>
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This struct is larger than 256 bytes and code that copies it
consistently shows up in profiles of the compiler.
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e.g. `x86_64-windows.win10...win11_dt-gnu` -> `x86_64-windows-gnu`
When the OS version is the default this is redundant with checking the
default in the standard library.
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and reduce redundant coverage in slow runs to save time
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On my machine, the defaults are 5 seconds (LLDB) and 2 seconds (GDB). These are
too low on the CI machines during high load, and the CI system itself already
enforces a timeout on jobs anyway, so just disable the timeout altogether.
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Add PIC/PIE tests and fix some bugs + some improvements to the test harness
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Previously, stepping from the single statement within the loop would
always exit the loop because all of the code unrolled from the loop is
associated with the same line and treated by the debugger as one line.
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This commit reworks how anonymous struct literals and tuples work.
Previously, an untyped anonymous struct literal
(e.g. `const x = .{ .a = 123 }`) was given an "anonymous struct type",
which is a special kind of struct which coerces using structural
equivalence. This mechanism was a holdover from before we used
RLS / result types as the primary mechanism of type inference. This
commit changes the language so that the type assigned here is a "normal"
struct type. It uses a form of equivalence based on the AST node and the
type's structure, much like a reified (`@Type`) type.
Additionally, tuples have been simplified. The distinction between
"simple" and "complex" tuple types is eliminated. All tuples, even those
explicitly declared using `struct { ... }` syntax, use structural
equivalence, and do not undergo staged type resolution. Tuples are very
restricted: they cannot have non-`auto` layouts, cannot have aligned
fields, and cannot have default values with the exception of `comptime`
fields. Tuples currently do not have optimized layout, but this can be
changed in the future.
This change simplifies the language, and fixes some problematic
coercions through pointers which led to unintuitive behavior.
Resolves: #16865
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This more closely resembles zig struct literals.
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This is in preparation for incremental and actually being able to debug
executables built by the x86_64 backend.
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