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// RUN: %target-sil-opt -enable-sil-verify-all %s -simplification | %FileCheck %s
// REQUIRES: swift_in_compiler
import Builtin
import Swift
import SwiftShims
class Buffer {}
sil_global @_swiftEmptyArrayStorage : $_SwiftEmptyArrayStorage
// CHECK-LABEL: sil [ossa] @remove_end_begin_cow_pair
// CHECK-NOT: end_cow_mutation
// CHECK-NOT: begin_cow_mutation
// CHECK: return %0
// CHECK: } // end sil function 'remove_end_begin_cow_pair'
sil [ossa] @remove_end_begin_cow_pair : $@convention(thin) (@owned Buffer) -> @owned Buffer {
bb0(%0 : @owned $Buffer):
%e = end_cow_mutation %0 : $Buffer
debug_value %e : $Buffer, var, name "x"
(%u, %b) = begin_cow_mutation %e : $Buffer
return %b : $Buffer
}
// CHECK-LABEL: sil [ossa] @dont_remove_end_begin_cow_pair1
// CHECK: end_cow_mutation
// CHECK: begin_cow_mutation
// CHECK: } // end sil function 'dont_remove_end_begin_cow_pair1'
sil [ossa] @dont_remove_end_begin_cow_pair1 : $@convention(thin) (@owned Buffer) -> @owned (Buffer, Buffer) {
bb0(%0 : @owned $Buffer):
%e = end_cow_mutation %0 : $Buffer
%c = copy_value %e : $Buffer
(%u, %b) = begin_cow_mutation %e : $Buffer
%t = tuple (%c : $Buffer, %b : $Buffer)
return %t : $(Buffer, Buffer)
}
// CHECK-LABEL: sil [ossa] @dont_remove_end_begin_cow_pair2
// CHECK: end_cow_mutation
// CHECK: begin_cow_mutation
// CHECK: } // end sil function 'dont_remove_end_begin_cow_pair2'
sil [ossa] @dont_remove_end_begin_cow_pair2 : $@convention(thin) (@owned Buffer) -> @owned (Builtin.Int1, Buffer) {
bb0(%0 : @owned $Buffer):
%e = end_cow_mutation %0 : $Buffer
(%u, %b) = begin_cow_mutation %e : $Buffer
%t = tuple (%u : $Builtin.Int1, %b : $Buffer)
return %t : $(Builtin.Int1, Buffer)
}
// CHECK-LABEL: sil [ossa] @dont_remove_end_begin_cow_pair3
// CHECK: end_cow_mutation
// CHECK: begin_cow_mutation
// CHECK: } // end sil function 'dont_remove_end_begin_cow_pair3'
sil [ossa] @dont_remove_end_begin_cow_pair3 : $@convention(thin) (@owned Buffer) -> @owned Buffer {
bb0(%0 : @owned $Buffer):
%e = end_cow_mutation [keep_unique] %0 : $Buffer
(%u, %b) = begin_cow_mutation %e : $Buffer
return %b : $Buffer
}
// CHECK-LABEL: sil [ossa] @remove_begin_end_cow_pair
// CHECK-NOT: end_cow_mutation
// CHECK-NOT: begin_cow_mutation
// CHECK: return %0
// CHECK: } // end sil function 'remove_begin_end_cow_pair'
sil [ossa] @remove_begin_end_cow_pair : $@convention(thin) (@owned Buffer) -> @owned Buffer {
bb0(%0 : @owned $Buffer):
(%u, %b) = begin_cow_mutation %0 : $Buffer
debug_value %u : $Builtin.Int1, var, name "x"
debug_value %b : $Buffer, var, name "y"
%e = end_cow_mutation %b : $Buffer
return %e : $Buffer
}
// CHECK-LABEL: sil [ossa] @dont_remove_begin_end_cow_pair1
// CHECK: begin_cow_mutation
// CHECK: end_cow_mutation
// CHECK: } // end sil function 'dont_remove_begin_end_cow_pair1'
sil [ossa] @dont_remove_begin_end_cow_pair1 : $@convention(thin) (@owned Buffer) -> @owned (Buffer, Buffer) {
bb0(%0 : @owned $Buffer):
(%u, %b) = begin_cow_mutation %0 : $Buffer
%c = copy_value %b : $Buffer
%e = end_cow_mutation %b : $Buffer
%t = tuple (%c : $Buffer, %e : $Buffer)
return %t : $(Buffer, Buffer)
}
// CHECK-LABEL: sil [ossa] @dont_remove_begin_end_cow_pair2
// CHECK: begin_cow_mutation
// CHECK: end_cow_mutation
// CHECK: } // end sil function 'dont_remove_begin_end_cow_pair2'
sil [ossa] @dont_remove_begin_end_cow_pair2 : $@convention(thin) (@owned Buffer) -> @owned (Builtin.Int1, Buffer) {
bb0(%0 : @owned $Buffer):
(%u, %b) = begin_cow_mutation %0 : $Buffer
%e = end_cow_mutation %b : $Buffer
%t = tuple (%u : $Builtin.Int1, %e : $Buffer)
return %t : $(Builtin.Int1, Buffer)
}
// CHECK-LABEL: sil [ossa] @dont_remove_begin_end_cow_pair3
// CHECK: begin_cow_mutation
// CHECK: end_cow_mutation
// CHECK: } // end sil function 'dont_remove_begin_end_cow_pair3'
sil [ossa] @dont_remove_begin_end_cow_pair3 : $@convention(thin) (@owned Buffer) -> @owned Buffer {
bb0(%0 : @owned $Buffer):
(%u, %b) = begin_cow_mutation %0 : $Buffer
%e = end_cow_mutation [keep_unique] %b : $Buffer
return %e : $Buffer
}
// CHECK-LABEL: sil @optimize_empty_cow_singleton
// CHECK: [[I:%[0-9]+]] = integer_literal $Builtin.Int1, 0
// CHECK: begin_cow_mutation
// CHECK: [[T:%[0-9]+]] = tuple ([[I]]
// CHECK: return [[T]]
// CHECK: } // end sil function 'optimize_empty_cow_singleton'
sil @optimize_empty_cow_singleton : $@convention(thin) () -> (Builtin.Int1, @owned Builtin.BridgeObject) {
bb0:
%3 = global_addr @_swiftEmptyArrayStorage : $*_SwiftEmptyArrayStorage
%4 = address_to_pointer %3 : $*_SwiftEmptyArrayStorage to $Builtin.RawPointer
%5 = raw_pointer_to_ref %4 : $Builtin.RawPointer to $__EmptyArrayStorage
%6 = unchecked_ref_cast %5 : $__EmptyArrayStorage to $Builtin.BridgeObject
(%u, %b) = begin_cow_mutation %6 : $Builtin.BridgeObject
%t = tuple (%u : $Builtin.Int1, %b : $Builtin.BridgeObject)
return %t : $(Builtin.Int1, Builtin.BridgeObject)
}
sil_global private @outlined_global : $_ContiguousArrayStorage<Int>
// CHECK-LABEL: sil @remove_arc_of_global_value
// CHECK-NOT: retain
// CHECK-NOT: release
// CHECK-NOT: fix_lifetime
// CHECK-NOT: debug_value
// CHECK: } // end sil function 'remove_arc_of_global_value'
sil @remove_arc_of_global_value : $@convention(thin) () -> Int {
bb0:
%0 = global_value @outlined_global : $_ContiguousArrayStorage<Int>
strong_retain %0 : $_ContiguousArrayStorage<Int>
debug_value %0 : $_ContiguousArrayStorage<Int>, let, name "x"
%2 = upcast %0 : $_ContiguousArrayStorage<Int> to $__ContiguousArrayStorageBase
strong_retain %2 : $__ContiguousArrayStorageBase
%13 = ref_tail_addr [immutable] %2 : $__ContiguousArrayStorageBase, $Int
%16 = load %13 : $*Int
fix_lifetime %0 : $_ContiguousArrayStorage<Int>
strong_release %2 : $__ContiguousArrayStorageBase
strong_release %0 : $_ContiguousArrayStorage<Int>
return %16 : $Int
}
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