// RUN: %target-sil-opt -sil-print-types -enable-sil-verify-all -sil-print-debuginfo -diagnostic-constant-propagation %s | %FileCheck %s

sil_stage canonical

import Builtin
import Swift
import SwiftShims

sil_scope 1 { loc "file.swift":1:6 parent @foo : $@convention(thin) (Int64, Int64) -> Int64 }

// Test if debug_value got preserved when %16 is removed in favor of directly using %13
// CHECK-LABEL: sil {{.*}} @foo
sil hidden @foo : $@convention(thin) (Int64, Int64) -> Int64 {
bb0(%0 : $Int64, %1 : $Int64):
  %4 = integer_literal $Builtin.Int64, 87, loc "file.swift":2:17, scope 1
  %9 = struct_extract %0 : $Int64, #Int64._value, loc "file.swift":2:15, scope 1
  %11 = integer_literal $Builtin.Int1, -1, loc "file.swift":2:15, scope 1
  // CHECK: %[[ADD:.+]] = builtin "sadd_with_overflow
  %12 = builtin "sadd_with_overflow_Int64"(%9 : $Builtin.Int64, %4 : $Builtin.Int64, %11 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1), loc "file.swift":2:15, scope 1
  // CHECK: (%[[RESULT:.+]], %{{.*}}) = destructure_tuple %[[ADD]]
  (%13, %14) = destructure_tuple %12 : $(Builtin.Int64, Builtin.Int1), loc "file.swift":2:15, scope 1
  %16 = struct $Int64 (%13 : $Builtin.Int64), loc "file.swift":2:15, scope 1
  // In addition to checking if `op_fragment` is generated, we're also checking if "z"'s declared
  // source location, as well as `debug_value`'s instruction source location are preserved.
  // CHECK: debug_value %[[RESULT]] : $Builtin.Int64, let, name "z"
  // CHECK-SAME: type $Int64
  // CHECK-SAME: expr op_fragment:#Int64._value
  // CHECK-SAME: loc "file.swift":2:9, scope 1
  debug_value %16 : $Int64, let, name "z", loc "file.swift":2:9, scope 1
  %19 = struct_extract %16 : $Int64, #Int64._value, loc "file.swift":3:14, scope 1
  %20 = struct_extract %1 : $Int64, #Int64._value, loc "file.swift":3:14, scope 1
  %21 = integer_literal $Builtin.Int1, -1, loc "file.swift":3:14, scope 1
  %22 = builtin "sadd_with_overflow_Int64"(%19 : $Builtin.Int64, %20 : $Builtin.Int64, %21 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1), loc "file.swift":3:14, scope 1
  (%23, %24) = destructure_tuple %22 : $(Builtin.Int64, Builtin.Int1), loc "file.swift":3:14, scope 1
  %26 = struct $Int64 (%23 : $Builtin.Int64), loc "file.swift":3:14, scope 1
  return %26 : $Int64, loc "file.swift":3:5, scope 1
} // end sil function 'foo'

sil_scope 2 { loc "file.swift":1:6 parent @bar : $@convention(thin) (Int64, Int64) -> Int64 }

// Test if debug_value got preserved when %5 is folded into %0, and %3 removed
// CHECK-LABEL: sil {{.*}} @bar
sil hidden @bar : $@convention(thin) (Int64, Int64) -> Int64 {
bb0(%0 : $Int64, %1 : $Int64):
  %3 = tuple $(low: Int64, high: Int64) (%0, %1), loc "file.swift":14:5, scope 2
  // CHECK: debug_value %0 : $Int64, let, name "newValue"
  // CHECK-SAME: type $(low: Int64, high: Int64)
  // CHECK-SAME: expr op_tuple_fragment:$(low: Int64, high: Int64):0
  // CHECK-SAME: "file.swift":14:5, scope 2
  // CHECK: debug_value %1 : $Int64, let, name "newValue"
  // CHECK-SAME: type $(low: Int64, high: Int64)
  // CHECK-SAME: expr op_tuple_fragment:$(low: Int64, high: Int64):1
  // CHECK-SAME: "file.swift":14:5, scope 2
  debug_value %3 : $(low: Int64, high: Int64), let, name "newValue", argno 1, loc "file.swift":14:5, scope 2
  (%5, %6) = destructure_tuple %3 : $(low: Int64, high: Int64), loc "file.swift":15:5, scope 2
  return %5 : $Int64, loc "file.swift":15:5, scope 2
} // end sil function 'bar'