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* SP004: implement initialize list translation to ctor
- We synthesize a member-wise constructor for each struct follow
the rules described in SP004.
- Add logic to translate the initialize list to constructor invoke
- Add cuda-host decoration for the synthesized constructor
- Remove the default constructor when we have a valid member init constructor
- Disable -zero-initialize option, will re-implement it in followup (#6109).
- Fix the overload lookup issue
When creating invoke expression for ctor, we need to call
ResolveInvoke() to find us the best candidates, however
the existing lookup logic could find us the base constructor
for child struct, we should eliminate this case by providing
the LookupOptions::IgnoreInheritance to lookup, this requires
us to create a subcontext on SemanticsVisitor to indicate that
we only want to use this option on looking the constructor.
- Do not implicit initialize a struct that doesn't have explicit default
constructor.
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
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* Improve checks and diagnostics around redeclarations
This change turns checking for redeclarations into a dedicated phase of semantic checking, and ensures that it applies to the main categories of declarations: functions, types, and variables.
Note that "variables" here includes function parameters and `struct` fields in addition to the more obvious global and local variables.
Some of the logic for checking redeclarations already existed for functions, and was refactored to deal with other cases of declarations. The checking for functions still needs to be special-cased because functions are much more flexible about the kinds of redeclarations that are allowed.
In addition to improving the diagnosis of redeclaration itself, this change also changes the error message that is produced when referencing a symbol that is ambiguous due to begin redeclared.
This is a small quality-of-life fix, and has the benefit of being much easier to implement than robust tracking of what variables have had redeclaration errors issued so that we can skip emitting an ambiguity error at the use site.
A new test case was added to cover the redeclaration cases for variables (but not types or functions), and the test for function parameters was updated to account for the new more universal diagnostic message (since function parameters used to have special-case redeclaration checking).
* fixup: missing file
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