llvm-project

833943ee - [Clang][CFI] Skip unused diagnostic data in trap and minimal-runtime vtable checks (#241640)

[Clang][CFI] Skip unused diagnostic data in trap and minimal-runtime vtable checks (#241640) `EmitVTableCheck` emitted the static diagnostic data and, without cross-DSO CFI, an `"all-vtables"` type test before deciding how to report a failure. Trap mode and the minimal runtime use neither, so they were left as dead globals and instructions. Local trap mode also called `EmitTrapCheck` directly instead of `EmitCheck`, so `-fsanitize-skip-hot-cutoff` and `-ubsan-guard-checks` did not apply to vtable checks. Skip the static diagnostic data in trap mode and local minimal-runtime checks, emit the `"all-vtables"` test only for local full-runtime checks, and route local trap and minimal-runtime checks through `EmitCheck`. Assisted-by: Gemini