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6ff3b91fe4
Replace ``` %s = struct (%0, %1, %2) %c = copy_value %s // can also be a chain of multiple copies (%3, %4, %5) = destructure_struct %c ``` with ``` %c0 = copy_value %0 %c1 = copy_value %1 %c2 = copy_value %2 %s = struct (%0, %1, %2) // keep the original struct ``` and replace the results %3, %4, %5 with %c0, %c1, %c2, respectively.
144 lines
4.9 KiB
Plaintext
144 lines
4.9 KiB
Plaintext
// RUN: %target-sil-opt -enable-sil-verify-all %s -onone-simplification -simplify-instruction=destructure_struct | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ONONE
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// RUN: %target-sil-opt -enable-sil-verify-all %s -simplification -simplify-instruction=destructure_struct | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-O
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// REQUIRES: swift_in_compiler
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import Swift
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import Builtin
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struct S {
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@_hasStorage let a: String
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@_hasStorage let b: Int
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}
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// CHECK-LABEL: sil [ossa] @forward_owned :
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// CHECK-NOT: destructure_tuple
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// CHECK: fix_lifetime %1
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// CHECK: return %0
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// CHECK: } // end sil function 'forward_owned'
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sil [ossa] @forward_owned : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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(%3, %4) = destructure_struct %2 : $S
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fix_lifetime %4 : $Int
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return %3 : $String
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}
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// CHECK-LABEL: sil [ossa] @forward_borrowed :
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// CHECK-NOT: destructure_struct
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// CHECK: fix_lifetime %0
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// CHECK: fix_lifetime %1
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// CHECK: } // end sil function 'forward_borrowed'
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sil [ossa] @forward_borrowed : $@convention(thin) (@guaranteed String, Int) -> () {
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bb0(%0 : @guaranteed $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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(%3, %4) = destructure_struct %2 : $S
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fix_lifetime %3 : $String
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fix_lifetime %4 : $Int
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%7 = tuple ()
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return %7 : $()
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}
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// CHECK-LABEL: sil [ossa] @dont_forward_owned_with_uses :
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// CHECK: (%5, %6) = destructure_struct %2 : $S
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// CHECK: fix_lifetime %6
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// CHECK: return %5
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// CHECK: } // end sil function 'dont_forward_owned_with_uses'
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sil [ossa] @dont_forward_owned_with_uses : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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%3 = begin_borrow %2 : $S
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end_borrow %3 : $S
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(%5, %6) = destructure_struct %2 : $S
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fix_lifetime %6 : $Int
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return %5 : $String
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}
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// CHECK-LABEL: sil [ossa] @forward_owned_with_debug_use :
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// CHECK-ONONE: (%4, %5) = destructure_struct %2 : $S
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// CHECK-ONONE: fix_lifetime %5
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// CHECK-ONONE: return %4
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// CHECK-O: fix_lifetime %1
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// CHECK-O: return %0
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// CHECK: } // end sil function 'forward_owned_with_debug_use'
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sil [ossa] @forward_owned_with_debug_use : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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debug_value %2 : $S, let, name "s"
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(%4, %5) = destructure_struct %2 : $S
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fix_lifetime %5 : $Int
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return %4 : $String
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}
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// CHECK-LABEL: sil [ossa] @forward_with_copy :
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// CHECK: %2 = copy_value %0
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// CHECK: %3 = struct $S (%0 : $String, %1 : $Int)
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// CHECK: fix_lifetime %1
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// CHECK: destroy_value %3
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// CHECK: return %2
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// CHECK: } // end sil function 'forward_with_copy'
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sil [ossa] @forward_with_copy : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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%3 = copy_value %2 : $S
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(%4, %5) = destructure_struct %3 : $S
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fix_lifetime %5 : $Int
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destroy_value %2 : $S
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return %4 : $String
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}
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// CHECK-LABEL: sil [ossa] @forward_with_two_copies :
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// CHECK: %2 = copy_value %0
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// CHECK: %3 = struct $S (%0 : $String, %1 : $Int)
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// CHECK: %4 = copy_value %3
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// CHECK: fix_lifetime %1
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// CHECK: destroy_value %3
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// CHECK: destroy_value %4
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// CHECK: return %2
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// CHECK: } // end sil function 'forward_with_two_copies'
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sil [ossa] @forward_with_two_copies : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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%3 = copy_value %2 : $S
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%4 = copy_value %3 : $S
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(%5, %6) = destructure_struct %4 : $S
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fix_lifetime %6 : $Int
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destroy_value %2 : $S
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destroy_value %3 : $S
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return %5 : $String
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}
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// CHECK-LABEL: sil [ossa] @copy_has_other_uses :
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// CHECK: destructure_struct
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// CHECK: } // end sil function 'copy_has_other_uses'
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sil [ossa] @copy_has_other_uses : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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%3 = copy_value %2 : $S
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fix_lifetime %3 : $S
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(%5, %6) = destructure_struct %3 : $S
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fix_lifetime %6 : $Int
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destroy_value %2 : $S
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return %5 : $String
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}
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// CHECK-LABEL: sil [ossa] @different_basic_block :
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// CHECK: bb2:
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// CHECK: destructure_struct
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// CHECK: } // end sil function 'different_basic_block'
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sil [ossa] @different_basic_block : $@convention(thin) (@owned String, Int) -> @owned String {
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bb0(%0 : @owned $String, %1 : $Int):
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%2 = struct $S (%0 : $String, %1 : $Int)
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%3 = copy_value %2 : $S
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cond_br undef, bb1, bb2
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bb1:
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destroy_value %3 : $S
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unreachable
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bb2:
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(%4, %5) = destructure_struct %3 : $S
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fix_lifetime %5 : $Int
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destroy_value %2 : $S
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return %4 : $String
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}
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