| // RUN: %empty-directory(%t) |
| // RUN: %target-swift-frontend -emit-module %S/Inputs/sil_witness_tables_external_input.swift -o %t/Swift.swiftmodule -parse-stdlib -parse-as-library -module-name Swift -module-link-name swiftCore |
| // RUN: %target-swift-frontend -O -I %t %s -Xllvm -sil-disable-pass=late-deadfuncelim -emit-sil | %FileCheck %s |
| // RUN: %target-swift-frontend -O -I %t %s -emit-sil | %FileCheck -check-prefix=CHECK-DFE %s |
| |
| import Swift |
| |
| // Make sure the specializer produces an external witness table. |
| // |
| // CHECK: sil_witness_table public_external X: P module Swift { |
| |
| // Also check that late dead-function-elimination is removing externally |
| // available witness tables. |
| // |
| // CHECK-DFE-NOT: sil_witness_table public_external |
| |
| func doSomething<T : P>(_ t : T) -> Y { |
| return t.doSomething() |
| } |
| |
| func done() -> Y { |
| let x = X() |
| return doSomething(x) |
| } |
| |
| // Make sure dead function elimination does not get rid of done and doSomething. |
| done() |
