File: witness_method_phi.sil

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// RUN: %target-swift-frontend -Xllvm -sil-disable-pass=simplification -emit-ir %s | %FileCheck %s

sil_stage canonical

protocol P { func foo() }
// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @phi_witness_method(ptr %T, ptr %T.P) #0 {
sil @phi_witness_method : $@convention(thin) <T: P> () -> () {
entry:
  // CHECK: [[T0_GEP:%.*]] = getelementptr inbounds ptr, ptr %T.P, i32 1
  // CHECK: [[LOAD:%.*]] = load ptr, ptr [[T0_GEP]],
  %1 = witness_method $T, #P.foo : $@convention(witness_method: P) <T: P> (@in T) -> ()
  br bb1(%1 : $@convention(witness_method: P) <T: P> (@in T) -> ())

// CHECK:         phi ptr [ {{.*}}, %entry ]
bb1(%2 : $@convention(witness_method: P) <T: P> (@in T) -> ()):
  unreachable
}