// RUN: %target-swift-frontend -emit-ir %s -g -o - \
// RUN:    -parse-as-library -module-name a -target %target-swift-5.9-abi-triple | %IRGenFileCheck %s

public func foo<each T>(args: repeat each T) {
  // CHECK: define {{.*}} @"$s1a3foo4argsyxxQp_tRvzlF"
  // CHECK-SAME: ptr {{.*}} %[[ARG_0:.*]], i{{.*}} %{{.*}},
  // CHECK-SAME: ptr %[[TYPE_PACK_ARG:.*]])
  // CHECK: %[[TYPE_PACK_ALLOCA:.*]] = alloca ptr
  // CHECK: #dbg_declare(ptr %[[TYPE_PACK_ALLOCA]], ![[TYPE_PACK_VAR:[0-9]+]], !DIExpression()
  // CHECK: %[[ARGS_ALLOCA:.*]] = alloca ptr
  // CHECK-DAG: #dbg_declare(ptr %[[ARGS_ALLOCA]], ![[ARGS_VAR:[0-9]+]], !DIExpression(DW_OP_deref)
  // CHECK-DAG: %[[TYPE_PACK_ARG_INT:[^,]+]] = ptrtoint ptr %[[TYPE_PACK_ARG]] to [[INT]]
  // CHECK-DAG: %[[TYPE_PACK_ARG_MASKED_INT:[^,]+]] = and [[INT]] %[[TYPE_PACK_ARG_INT]], -2
  // CHECK-DAG: %[[TYPE_PACK_ARG_MASKED:[^,]+]] = inttoptr [[INT]] %[[TYPE_PACK_ARG_MASKED_INT]] to ptr
  // CHECK-DAG: store ptr %[[TYPE_PACK_ARG_MASKED]], ptr %[[TYPE_PACK_ALLOCA]]
  // CHECK-DAG: store ptr %[[ARG_0]], ptr %[[ARGS_ALLOCA]]
  // CHECK-DAG: ![[ARGS_VAR]] = !DILocalVariable(name: "args", arg: 1, {{.*}}line: [[@LINE-13]], type: ![[ARGS_LET_TY:[0-9]+]])
  // CHECK-DAG: ![[ARGS_LET_TY]] = !DIDerivedType(tag: DW_TAG_const_type, baseType: ![[ARGS_TY:[0-9]+]])
  // CHECK-DAG: ![[ARGS_TY]] = !DICompositeType({{.*}}identifier: "$sxxQp_QSiD")
  // CHECK-DAG: ![[TYPE_PACK_VAR]] = !DILocalVariable(name: "$\CF\84_0_0", {{.*}}type: ![[TYPE_PACK_TYD:[0-9]+]], flags: DIFlagArtificial)
  // CHECK-DAG: ![[TYPE_PACK_TYD]] = !DIDerivedType(tag: DW_TAG_typedef, name: "T", {{.*}}baseType: ![[TYPE_PACK_TY:[0-9]+]]
  // CHECK-DAG: ![[TYPE_PACK_TY]] = !DIDerivedType(tag: DW_TAG_pointer_type, name: "$sBpD"
}

// Test ASTDemangler round-tripping of various pack expansion types

public func paramExpansionWithPattern<each T>(args: repeat Array<each T>) {}

public func paramExpansionWithMemberType<each T: Sequence>(args: repeat each T, elements: repeat (each T).Element) {}

public func tupleExpansion<each T>(args: (repeat each T)) {}

public func tupleExpansionWithPattern<each T>(args: (repeat Array<each T>)) {}

// FIXME: Crashes due to unrelated bug
// public func tupleExpansionWithMemberType<each T: Sequence>(args: repeat each T, elements: (repeat (each T).Element)) {}

public func functionExpansion<each T>(args: (repeat each T) -> ()) {}

public func functionExpansionWithPattern<each T>(args: (repeat Array<each T>) -> ()) {}

public func functionExpansionWithMemberType<each T: Sequence>(args: repeat each T, elements: (repeat (each T).Element) -> ()) {}

public struct G<each T> {}

public func nominalExpansion<each T>(args: G<repeat each T>) {}

public func nominalExpansionWithPattern<each T>(args: G<repeat Array<each T>>) {}

public func nominalExpansionWithMemberType<each T: Sequence>(args: repeat each T, elements: G<repeat (each T).Element>) {}

//

public typealias First<T, U> = T

public func concreteExpansion<each T>(args: repeat each T, concrete: repeat First<Int, each T>) {}