File: silgen_cleanup_debug.sil

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// RUN: %target-sil-opt -opt-mode=none -silgen-cleanup -sil-print-debuginfo -sil-verify-all %s | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECKDEB

// TODO: add -opt-mode=speed after calling salvageLoadDebugInfo() from salvageDebugInfo().

import Builtin

sil_stage raw

struct Int {
  var _value : Builtin.Int32
}

// rdar://104700920 (At -Onone preserve debug info after splitting loads)
//
// loadFromArg checks that a new debug_value is inserted with "expr op_deref".
//
// loadFromStack checks that a new debug_value is insert without op_deref.

sil_scope 10 { loc "./loadFromArg.swift":1:1 parent @loadFromArg : $@convention(thin) (@inout Int) -> Builtin.Int32 }
sil_scope 11 { loc "./loadFromArg.swift":1:1 parent 10 }
// CHECK: sil_scope [[ARGSCOPE1:[0-9]+]] { loc "./loadFromArg.swift":1:1 parent @loadFromArg : $@convention(thin) (@inout Int) -> Builtin.Int32 }
// CHECK: sil_scope [[ARGSCOPE2:[0-9]+]] { loc "./loadFromArg.swift":1:1 parent [[ARGSCOPE1]] }

// CHECK-LABEL: sil [ossa] @loadFromArg : $@convention(thin) (@inout Int) -> Builtin.Int32 {
// CHECK: bb0(%0 : $*Int):
// CHECK: [[ACCESS:%.*]] = begin_access [read] [unknown] %0 : $*Int
// CHECK: struct_element_addr [[ACCESS]] : $*Int, #Int._value
// CHECK: load [trivial] %{{.*}} : $*Builtin.Int32, loc "./loadFromArg.swift":2:1, scope [[ARGSCOPE1]]
// CHECK: debug_value [[ACCESS]] : $*Int, let, name "sVar", expr op_deref, loc "./loadFromArg.swift":3:1, scope [[ARGSCOPE2]]
// CHECK-LABEL: } // end sil function 'loadFromArg'
sil [ossa] @loadFromArg : $@convention(thin) (@inout Int) -> Builtin.Int32 {
bb0(%0 : $*Int):
  %2 = begin_access [read] [unknown] %0 : $*Int
  %3 = load [trivial] %2 : $*Int, loc "./loadFromArg.swift":2:1, scope 10
  end_access %2 : $*Int
  debug_value %3 : $Int, let, name "sVar", loc "./loadFromArg.swift":3:1, scope 11
  %6 = struct_extract %3 : $Int, #Int._value
  return %6 : $Builtin.Int32
}

sil @storeToStack : $@convention(thin) <τ_0_0> (@in_guaranteed τ_0_0) -> @out τ_0_0

sil_scope 20 { loc "./loadFromStack.swift":1:1 parent @loadFromStack : $@convention(thin) (Int) -> Builtin.Int32 }
sil_scope 21 { loc "./loadFromStack.swift":1:1 parent 20 }
// CHECK: sil_scope [[STACKSCOPE1:[0-9]+]] { loc "./loadFromStack.swift":1:1 parent @loadFromStack : $@convention(thin) (Int) -> Builtin.Int32 }
// CHECK: sil_scope [[STACKSCOPE2:[0-9]+]] { loc "./loadFromStack.swift":1:1 parent [[STACKSCOPE1]] }

// CHECK-LABEL: sil [ossa] @loadFromStack : $@convention(thin) (Int) -> Builtin.Int32 {
// CHECK: bb0(%0 : $Int):
// CHECK:   [[STACK:%.*]] = alloc_stack $Int
// CHECK:   struct_element_addr [[STACK]] : $*Int, #Int._value
// CHECK:   load [trivial] %{{.*}} : $*Builtin.Int32, loc "./loadFromStack.swift":2:1, scope [[STACKSCOPE1]]
// CHECK:   debug_value [[STACK]] : $*Int, let, name "sVar", loc "./loadFromStack.swift":3:1, scope [[STACKSCOPE2]]
// CHECK-LABEL: } // end sil function 'loadFromStack'
sil [ossa] @loadFromStack : $@convention(thin) (Int) -> Builtin.Int32 {
bb0(%0 : $Int):
  debug_value %0 : $Int, let, name "s", argno 1
  %2 = alloc_stack $Int
  %3 = alloc_stack $Int
  store %0 to [trivial] %3 : $*Int
  %5 = function_ref @storeToStack : $@convention(thin) <τ_0_0> (@in_guaranteed τ_0_0) -> @out τ_0_0
  %6 = apply %5<Int>(%2, %3) : $@convention(thin) <τ_0_0> (@in_guaranteed τ_0_0) -> @out τ_0_0
  dealloc_stack %3 : $*Int
  %8 = load [trivial] %2 : $*Int, loc "./loadFromStack.swift":2:1, scope 20
  debug_value %8 : $Int, let, name "sVar", loc "./loadFromStack.swift":3:1, scope 21
  dealloc_stack %2 : $*Int
  %11 = struct_extract %8 : $Int, #Int._value
  return %11 : $Builtin.Int32
}