// RUN: %target-swift-frontend -emit-ir -primary-file %s | %FileCheck %s

protocol P {}
class A : P {}

sil_vtable A {}

// <rdar://25695389>
//   Ensure that an "abstract" conformance that minimization
//   resolves as concrete doesn't mess up IRGen.  Note that this test case
//   is only meaningful if type-checking actually resolves the conformance
//   as abstract, which it does today for both Swift and SIL inputs.
//   If it stops doing that, we can drop the special case in IRGen.
sil @foo : $@convention(thin) <T where T : A, T : P> (@guaranteed T) -> () {
bb0(%0 : $T):
  %1 = alloc_stack $P
  %2 = init_existential_addr %1 : $*P, $T
  strong_retain %0 : $T
  store %0 to %2 : $*T
  destroy_addr %1 : $*P
  dealloc_stack %1 : $*P
  %3 = tuple ()
  return %3 : $()
}
// CHECK: define {{.*}}void @foo(ptr %0, ptr %T)
// CHECK: store ptr @"$s16class_constraint1ACAA1PAAWP",