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5a3ab6ee2e
Eliminate the redundant instruction pair ``` %t = tuple (%0, %1, %2) (%3, %4, %5) = destructure_tuple %t ``` and replace the results %3, %4, %5 with %0, %1, %2, respectively. The same for structs.
68 lines
2.6 KiB
Plaintext
68 lines
2.6 KiB
Plaintext
// RUN: %target-sil-opt -enable-sil-verify-all %s -onone-simplification -simplify-instruction=destructure_tuple | %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_tuple | %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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// 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 = tuple (%0 : $String, %1 : $Int)
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(%3, %4) = destructure_tuple %2 : $(String, Int)
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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_tuple
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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 = tuple (%0 : $String, %1 : $Int)
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(%3, %4) = destructure_tuple %2 : $(String, Int)
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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_tuple %2 : $(String, Int)
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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 = tuple (%0 : $String, %1 : $Int)
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%3 = begin_borrow %2 : $(String, Int)
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end_borrow %3 : $(String, Int)
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(%5, %6) = destructure_tuple %2 : $(String, Int)
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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_tuple %2 : $(String, Int)
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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 = tuple (%0 : $String, %1 : $Int)
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debug_value %2 : $(String, Int), let, name "t"
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(%4, %5) = destructure_tuple %2 : $(String, Int)
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fix_lifetime %5 : $Int
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return %4 : $String
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}
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