test/IRGen/invariant_load.sil

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

sil_stage canonical

import Builtin

struct X {
  var y: Builtin.Int32
  var z: Builtin.Int32
}

// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @invariant_load
sil @invariant_load : $@convention(thin) (Builtin.RawPointer) -> () {
entry(%p : $Builtin.RawPointer):
  %a = pointer_to_address %p : $Builtin.RawPointer to [invariant] $*X
  // CHECK: load i32, {{.*}} !invariant.load
  // CHECK: load i32, {{.*}} !invariant.load
  %x = load [trivial] %a : $*X
  %yp = struct_element_addr %a : $*X, #X.y
  // CHECK: load i32, {{.*}} !invariant.load
  %y = load [trivial] %yp : $*Builtin.Int32
  %zp = struct_element_addr %a : $*X, #X.z
  // CHECK: load i32, {{.*}} !invariant.load
  %z = load [trivial] %zp : $*Builtin.Int32
  return undef : $()
}