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embedded: rewrite the diagnostic pass for embedded swift

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1. move embedded diagnostics out of the PerformanceDiagnostics pass. It was completely separated from the other logic in this pass, anyway.
2. rewrite it in swift
3. fix several bugs, that means: missed diagnostics, which led to IRGen crashes
  * look at all methods in witness tables, including base protocols and associated conformances
  * visit all functions in the call tree, including generic functions with class bound generic arguments
  * handle all instructions, e.g. concurrency builtins
4. improve error messages by adding meaningful call-site information. For example:
  * if the error is in a specialized function, report where the generic function is originally specialized with concrete types
  * if the error is in a protocol witness method, report where the existential is created
This commit is contained in:
Erik Eckstein
2025-04-17 16:32:01 +02:00
parent d222cf20f1
commit 6c31eb0c43
15 changed files with 445 additions and 270 deletions
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3
test/embedded/existential-composition.swift
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@@ -22,7 +22,6 @@ func test(existential: any ClassBound & OtherProtocol) {
@main
struct Main {
static func main() {
test(existential: MyClass()) // expected-error {{cannot use a value of protocol type 'any ClassBound & OtherProtocol' in embedded Swift}}
// expected-note@-4 {{called from here}}
test(existential: MyClass()) // expected-error {{cannot use a value of protocol type 'any OtherProtocol' in embedded Swift}}
}
}