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Make Destroy.Op functions able to have a body (#6729)

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This is iterating on how `Destroy.Op` generates, to start adding body
capabilities. This changes the way the signature is created, and adds a
`CoreWitness` function kind so that mangling can prevent name
collisions. The result is that what _was_ `DestroyOp` is now
`Core.Destroy.Op` or, as can be seen in
toolchain/lower/testdata/interop/cpp/nullptr.carbon,
`_COp.<hash>:core.Destroy.Core` where `:core` is indicating that it's a
core witness (taking a note from `:thunk`).

Assisted-by: Google Antigravity with Gemini 3 Flash
This commit is contained in:
Jon Ross-Perkins
2026-03-02 17:57:31 +00:00
committed by GitHub
parent 2389590230
commit b14015602b
163 changed files with 2472 additions and 2339 deletions
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toolchain/lower/testdata/interop/cpp/nullptr.carbon
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@@ -96,6 +96,8 @@ fn ConvertNullptrConstant() -> Core.Optional(i32*) {
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @"_COp.7c9703d73655494a:core.Destroy.Core"(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_Z7TakePtrPi(ptr noundef) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare ptr @"_COp.NullptrT.CppCompat.Core:Copy.Core"(ptr)