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107 lines
3.1 KiB
Plaintext
107 lines
3.1 KiB
Plaintext
// RUN: %target-sil-opt -assume-parsing-unqualified-ownership-sil -enable-sil-verify-all -enable-loop-arc=0 -arc-sequence-opts %s | %FileCheck %s
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// RUN: %target-sil-opt -assume-parsing-unqualified-ownership-sil -enable-sil-verify-all -enable-loop-arc=1 -arc-sequence-opts %s | %FileCheck %s
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import Builtin
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import Swift
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import SwiftShims
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class MD5 {
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init()
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final var w: [UInt32]
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}
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// CHECK-LABEL:sil @test_unique_check_arc : $@convention(method) (@owned MD5) -> ()
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sil @test_unique_check_arc : $@convention(method) (@owned MD5) -> () {
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// CHECK: bb0
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bb0(%0 : $MD5):
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%1 = integer_literal $Builtin.Int32, 0
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%2 = integer_literal $Builtin.Int32, 16
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%3 = struct $Int32 (%1 : $Builtin.Int32)
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br bb1(%1 : $Builtin.Int32)
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// CHECK: bb1
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bb1(%5 : $Builtin.Int32):
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%7 = builtin "cmp_eq_Int32"(%5 : $Builtin.Int32, %2 : $Builtin.Int32) : $Builtin.Int1
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cond_br %7, bb3, bb2
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// CHECK: bb2
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bb2:
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%9 = integer_literal $Builtin.Int32, 1
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%11 = integer_literal $Builtin.Int1, -1
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%12 = builtin "sadd_with_overflow_Int32"(%5 : $Builtin.Int32, %9 : $Builtin.Int32, %11 : $Builtin.Int1) : $(Builtin.Int32, Builtin.Int1)
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%13 = tuple_extract %12 : $(Builtin.Int32, Builtin.Int1), 0
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// CHECK-NOT: strong_retain
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// CHECK-NOT: strong_release
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strong_retain %0 : $MD5
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%314 = ref_element_addr %0 : $MD5, #MD5.w
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%318 = load %314 : $*Array<UInt32>
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%319 = alloc_stack $Array<UInt32>
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store %318 to %319 : $*Array<UInt32>
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dealloc_stack %319 : $*Array<UInt32>
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%179 = is_unique %314 : $*Array<UInt32>
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cond_br %179, bb4, bb5
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// CHECK: bb3
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// CHECK-NEXT: strong_release
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// CHECK-NEXT: tuple
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// CHECK-NEXT: return
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bb3:
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strong_release %0 : $MD5
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%273 = tuple ()
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return %273 : $()
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bb4:
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br bb5
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// CHECK-NOT: strong_release
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bb5:
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strong_release %0 : $MD5
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br bb1(%13 : $Builtin.Int32)
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}
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class C {}
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// Check that retains are not moved across an is_unique that may alias.
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sil @test_uniq_alias : $@convention(method) (@owned C) -> Builtin.Int1 {
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// CHECK: bb0
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bb0(%0 : $C):
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%1 = alloc_stack $C, var, name "x"
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store %0 to %1 : $*C
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// CHECK: strong_retain %0 : $C
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strong_retain %0 : $C
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// CHECK: is_unique %1 : $*C
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%4 = is_unique %1 : $*C
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// CHECK-NOT: strong_retain
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fix_lifetime %0 : $C
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// CHECK: strong_release %0 : $C
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strong_release %0 : $C
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// CHECK: [[LOADED:%[0-9]+]] = load %1 : $*C
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%8 = load %1 : $*C
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// CHECK: strong_release [[LOADED]] : $C
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strong_release %8 : $C
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dealloc_stack %1 : $*C
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return %4 : $Builtin.Int1
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}
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// The following test could optimize to:
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// %2 = load %1 : $*C // user: %4
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// %3 = is_unique %0 : $*C // user: %5
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// fix_lifetime %2 : $C // id: %4
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//
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// But ARC is currently conservative. When this is fixed,
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// change _CHECK: strong... into _CHECK_NOT: strong...
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sil @test_uniq_noalias : $@convention(thin) (@inout C, @inout C) -> Builtin.Int1 {
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// CHECK: bb0
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bb0(%0 : $*C, %1 : $*C):
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%2 = load %1 : $*C
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// CHECK: strong_retain %2 : $C
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strong_retain %2 : $C
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// CHECK: is_unique %0 : $*C
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%4 = is_unique %0 : $*C
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fix_lifetime %2 : $C
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// CHECK: strong_release %2 : $C
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strong_release %2 : $C
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return %4 : $Builtin.Int1
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}
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