test/SILOptimizer/licm_multiend.sil

// RUN: %target-sil-opt -enable-sil-verify-all %s -licm | %FileCheck %s
// REQUIRES: CPU=x86_64
// REQUIRES: OS=macosx

sil_stage canonical

import Builtin
import Swift
import SwiftShims

var x: Int

let reversedArray: ReversedCollection<[Int]>

// x
sil_global hidden @$s3tmp1xSivp : $Int

// reversedArray
sil_global hidden [let] @$s3tmp13reversedArrays18ReversedCollectionVySaySiGGvp : $ReversedCollection<Array<Int>>

// _swiftEmptyArrayStorage
sil_global @_swiftEmptyArrayStorage : $_SwiftEmptyArrayStorage


// CHECK-LABEL: sil hidden @multi_end_licm : $@convention(thin) () -> () {
// CHECK: bb2:
// CHECK: [[GLOBALVAR:%.*]] = global_addr @$s3tmp1xSivp : $*Int
// CHECK: [[BEGINA:%.*]] = begin_access [modify] [dynamic] [no_nested_conflict] [[GLOBALVAR]] : $*Int
// CHECK-NEXT: br [[LOOPH:bb[0-9]+]]({{.*}} : $Builtin.Int64)
// CHECK: [[LOOPH]]({{.*}} : $Builtin.Int64)
// CHECK: cond_br {{.*}}, [[LOOPCOND1:bb[0-9]+]], [[LOOPCOND2:bb[0-9]+]]
// CHECK: [[LOOPCOND1]]:
// CHECK-NEXT: store
// CHECK-NEXT: cond_br {{.*}}, [[LOOPEXIT1:bb[0-9]+]], [[LOOPCONT1:bb[0-9]+]]
// CHECK: [[LOOPEXIT1]]:
// CHECK-NEXT: end_access [[BEGINA]] : $*Int
// CHECK-NEXT: br [[LOOPAFTEREXIT:bb[0-9]+]]
// CHECK: [[LOOPCOND2]]:
// CHECK-NEXT: struct $Int
// CHECK-NEXT: store
// CHECK-NEXT: cond_br {{.*}}, [[LOOPEXIT2:bb[0-9]+]], [[LOOPCONT1]]
// CHECK: [[LOOPEXIT2]]:
// CHECK-NEXT: end_access [[BEGINA]] : $*Int
// CHECK-NEXT: br [[LOOPAFTEREXIT]]
// CHECK: [[LOOPCONT1]]:
// CHECK-NEXT: br [[LOOPH]]
// CHECK: [[LOOPAFTEREXIT]]:
// CHECK-NEXT: br [[FUNCRET:bb[0-9]+]]
// CHECK: [[FUNCRET]]:
// CHECK-NEXT: tuple
// CHECK-NEXT: return
sil hidden @multi_end_licm : $@convention(thin) () -> () {
bb0:
  %0 = global_addr @$s3tmp13reversedArrays18ReversedCollectionVySaySiGGvp : $*ReversedCollection<Array<Int>>
  %1 = struct_element_addr %0 : $*ReversedCollection<Array<Int>>, #ReversedCollection._base
  %2 = struct_element_addr %1 : $*Array<Int>, #Array._buffer
  %3 = struct_element_addr %2 : $*_ArrayBuffer<Int>, #_ArrayBuffer._storage
  %4 = struct_element_addr %3 : $*_BridgeStorage<__ContiguousArrayStorageBase>, #_BridgeStorage.rawValue
  %5 = load %4 : $*Builtin.BridgeObject
  %6 = unchecked_ref_cast %5 : $Builtin.BridgeObject to $__ContiguousArrayStorageBase
  %7 = ref_element_addr %6 : $__ContiguousArrayStorageBase, #__ContiguousArrayStorageBase.countAndCapacity
  %8 = struct_element_addr %7 : $*_ArrayBody, #_ArrayBody._storage
  %9 = struct_element_addr %8 : $*_SwiftArrayBodyStorage, #_SwiftArrayBodyStorage.count
  %10 = struct_element_addr %9 : $*Int, #Int._value
  %11 = load %10 : $*Builtin.Int64
  %12 = builtin "assumeNonNegative_Int64"(%11 : $Builtin.Int64) : $Builtin.Int64
  %13 = integer_literal $Builtin.Int64, 0
  %14 = integer_literal $Builtin.Int1, 0
  %15 = builtin "cmp_eq_Int64"(%12 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %16 = builtin "int_expect_Int1"(%15 : $Builtin.Int1, %14 : $Builtin.Int1) : $Builtin.Int1
  cond_br %16, bb1, bb2

bb1:
  br bbRet

bb2:
  %19 = global_addr @$s3tmp1xSivp : $*Int
  %20 = integer_literal $Builtin.Int64, 1
  %21 = integer_literal $Builtin.Int1, -1
  %23 = ref_tail_addr %6 : $__ContiguousArrayStorageBase, $Int
  br bb4(%12 : $Builtin.Int64)

bb4(%27 : $Builtin.Int64):
  %28 = builtin "ssub_with_overflow_Int64"(%27 : $Builtin.Int64, %20 : $Builtin.Int64, %21 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1)
  %29 = tuple_extract %28 : $(Builtin.Int64, Builtin.Int1), 0
  %30 = tuple_extract %28 : $(Builtin.Int64, Builtin.Int1), 1
  cond_fail %30 : $Builtin.Int1
  %32 = builtin "cmp_slt_Int64"(%29 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %33 = load %10 : $*Builtin.Int64
  %34 = builtin "assumeNonNegative_Int64"(%33 : $Builtin.Int64) : $Builtin.Int64 
  %35 = builtin "cmp_slt_Int64"(%29 : $Builtin.Int64, %34 : $Builtin.Int64) : $Builtin.Int1
  %36 = builtin "xor_Int1"(%35 : $Builtin.Int1, %21 : $Builtin.Int1) : $Builtin.Int1
  %37 = builtin "or_Int1"(%32 : $Builtin.Int1, %36 : $Builtin.Int1) : $Builtin.Int1
  cond_fail %37 : $Builtin.Int1
  %39 = builtin "truncOrBitCast_Int64_Word"(%29 : $Builtin.Int64) : $Builtin.Word
  %40 = index_addr %23 : $*Int, %39 : $Builtin.Word
  %41 = struct_element_addr %40 : $*Int, #Int._value
  %42 = load %41 : $*Builtin.Int64
  %43 = struct $Int (%42 : $Builtin.Int64)
  debug_value %43 : $Int, let, name "item"
  %global = begin_access [modify] [dynamic] [no_nested_conflict] %19 : $*Int
  %46 = builtin "cmp_eq_Int64"(%29 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %47 = builtin "int_expect_Int1"(%46 : $Builtin.Int1, %14 : $Builtin.Int1) : $Builtin.Int1
  cond_br %47, bbend1, bbend2
  
bbend1:
  store %43 to %global : $*Int
  end_access %global : $*Int
  cond_br %47, bb6, bb5
  
bbend2:
  %otherInt = struct $Int (%27 : $Builtin.Int64)
  store %otherInt to %global : $*Int
  end_access %global : $*Int
  cond_br %47, bb6, bb5

bb5:
  br bb4(%29 : $Builtin.Int64)

bb6:
  br bbRet
  
bbRet:
  %25 = tuple ()
  return %25 : $()
} // end sil function 'multi_end_licm'

// CHECK-LABEL: sil hidden @multi_end_licm_loop_exit : $@convention(thin) () -> () {
// CHECK: br [[LOOPH:bb[0-9]+]]({{.*}} : $Builtin.Int64)
// CHECK: [[LOOPH]]({{.*}} : $Builtin.Int64)
// CHECK: begin_access [modify] [dynamic] [no_nested_conflict]
// CHECK: cond_br {{.*}}, [[LOOPCOND1:bb[0-9]+]], [[LOOPCOND2:bb[0-9]+]]
// CHECK: [[LOOPCOND1]]
// CHECK-NEXT: store
// CHECK-NEXT: end_access
// CHECK: return
sil hidden @multi_end_licm_loop_exit : $@convention(thin) () -> () {
bb0:
  %0 = global_addr @$s3tmp13reversedArrays18ReversedCollectionVySaySiGGvp : $*ReversedCollection<Array<Int>>
  %1 = struct_element_addr %0 : $*ReversedCollection<Array<Int>>, #ReversedCollection._base
  %2 = struct_element_addr %1 : $*Array<Int>, #Array._buffer
  %3 = struct_element_addr %2 : $*_ArrayBuffer<Int>, #_ArrayBuffer._storage
  %4 = struct_element_addr %3 : $*_BridgeStorage<__ContiguousArrayStorageBase>, #_BridgeStorage.rawValue
  %5 = load %4 : $*Builtin.BridgeObject
  %6 = unchecked_ref_cast %5 : $Builtin.BridgeObject to $__ContiguousArrayStorageBase
  %7 = ref_element_addr %6 : $__ContiguousArrayStorageBase, #__ContiguousArrayStorageBase.countAndCapacity
  %8 = struct_element_addr %7 : $*_ArrayBody, #_ArrayBody._storage
  %9 = struct_element_addr %8 : $*_SwiftArrayBodyStorage, #_SwiftArrayBodyStorage.count
  %10 = struct_element_addr %9 : $*Int, #Int._value
  %11 = load %10 : $*Builtin.Int64
  %12 = builtin "assumeNonNegative_Int64"(%11 : $Builtin.Int64) : $Builtin.Int64
  %13 = integer_literal $Builtin.Int64, 0
  %14 = integer_literal $Builtin.Int1, 0
  %15 = builtin "cmp_eq_Int64"(%12 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %16 = builtin "int_expect_Int1"(%15 : $Builtin.Int1, %14 : $Builtin.Int1) : $Builtin.Int1
  cond_br %16, bb1, bb2

bb1:
  br bbRet

bb2:
  %19 = global_addr @$s3tmp1xSivp : $*Int
  %20 = integer_literal $Builtin.Int64, 1
  %21 = integer_literal $Builtin.Int1, -1
  %23 = ref_tail_addr %6 : $__ContiguousArrayStorageBase, $Int
  br bb4(%12 : $Builtin.Int64)

bb4(%27 : $Builtin.Int64):
  %28 = builtin "ssub_with_overflow_Int64"(%27 : $Builtin.Int64, %20 : $Builtin.Int64, %21 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1)
  %29 = tuple_extract %28 : $(Builtin.Int64, Builtin.Int1), 0
  %30 = tuple_extract %28 : $(Builtin.Int64, Builtin.Int1), 1
  cond_fail %30 : $Builtin.Int1
  %32 = builtin "cmp_slt_Int64"(%29 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %33 = load %10 : $*Builtin.Int64
  %34 = builtin "assumeNonNegative_Int64"(%33 : $Builtin.Int64) : $Builtin.Int64 
  %35 = builtin "cmp_slt_Int64"(%29 : $Builtin.Int64, %34 : $Builtin.Int64) : $Builtin.Int1
  %36 = builtin "xor_Int1"(%35 : $Builtin.Int1, %21 : $Builtin.Int1) : $Builtin.Int1
  %37 = builtin "or_Int1"(%32 : $Builtin.Int1, %36 : $Builtin.Int1) : $Builtin.Int1
  cond_fail %37 : $Builtin.Int1
  %39 = builtin "truncOrBitCast_Int64_Word"(%29 : $Builtin.Int64) : $Builtin.Word
  %40 = index_addr %23 : $*Int, %39 : $Builtin.Word
  %41 = struct_element_addr %40 : $*Int, #Int._value
  %42 = load %41 : $*Builtin.Int64
  %43 = struct $Int (%42 : $Builtin.Int64)
  debug_value %43 : $Int, let, name "item"
  %global = begin_access [modify] [dynamic] [no_nested_conflict] %19 : $*Int
  %46 = builtin "cmp_eq_Int64"(%29 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
  %47 = builtin "int_expect_Int1"(%46 : $Builtin.Int1, %14 : $Builtin.Int1) : $Builtin.Int1
  cond_br %47, bbend1, bbend2
  
bbend1:
  store %43 to %global : $*Int
  end_access %global : $*Int
  cond_br %47, bb6, bb5
  
bbend2:
  %otherInt = struct $Int (%27 : $Builtin.Int64)
  store %otherInt to %global : $*Int
  cond_br %47, bbOut, bb5

bbOut:
  end_access %global : $*Int
  br bb6

bb5:
  br bb4(%29 : $Builtin.Int64)

bb6:
  br bbRet
  
bbRet:
  %25 = tuple ()
  return %25 : $()
} // end sil function 'multi_end_licm_loop_exit'