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https://github.com/apple/swift.git
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18063707b5
This new OSSA invariant simplifies many optimizations because they don't have to take care of the corner case of incomplete lifetimes in dead-end blocks. The implementation basically consists of these changes: * add the lifetime completion utility * add a flag in SILFunction which tells optimization that they need to run the lifetime completion utility * let all optimizations complete lifetimes if necessary * enable the ownership verifier to check complete lifetimes
111 lines
4.2 KiB
Plaintext
111 lines
4.2 KiB
Plaintext
// RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s
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sil_stage raw
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import Swift
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protocol P {}
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struct F {}
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struct G: P {}
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struct Q: P {}
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// TODO: Transform boxes by transforming their arguments, not as single-field,
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// so that they work as parameters in generic SIL functions.
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// CHECK-LABEL: sil [ossa] @box_type_parsing : $@convention(thin) (
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sil [ossa] @box_type_parsing : $@convention(thin) (
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// CHECK: <τ_0_0> { var τ_0_0 } <F>,
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<B>{ var B }<F>,
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// CHECK: <τ_0_0 where τ_0_0 : P> { let τ_0_0 } <G>,
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<C: P>{ let C }<G>,
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// CHECK: <τ_0_0 where τ_0_0 : P> { var τ_0_0 } <Q>,
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<D: P>{ var D }<Q>,
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// CHECK: { let Int },
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{ let Int },
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// CHECK: { var Int, let String },
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{ var Int, let String },
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// CHECK: { },
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{},
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// CHECK: <τ_0_0, τ_0_1, τ_0_2> { var τ_0_0, let τ_0_2 } <Int, String, Optional<Double>>
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<X, Y, Z>{ var X, let Z }<Int, String, Optional<Double>>
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// CHECK: ) -> ()
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) -> () {
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entry(%0 : @unowned $<E>{ var E }<F>, %1 : @unowned $<F: P>{ let F }<G>, %2 : @unowned $<G: P>{ var G }<Q>, %3 : @unowned ${ let Int }, %4 : @unowned ${ var Int, let String }, %5 : @unowned ${}, %6 : @unowned $<XX, YY, ZZ>{ var XX, let ZZ }<Int, String, Optional<Double>>):
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @box_type_parsing_in_generic_function : $@convention(thin) <F, G where G : P> (
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sil [ossa] @box_type_parsing_in_generic_function : $@convention(thin) <F, G: P> (
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// CHECK: <τ_0_0> { var τ_0_0 } <F>,
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<B>{ var B }<F>,
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// CHECK: <τ_0_0 where τ_0_0 : P> { let τ_0_0 } <G>,
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<C: P>{ let C }<G>,
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// CHECK: <τ_0_0 where τ_0_0 : P> { var τ_0_0 } <Q>,
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<D: P>{ var D }<Q>,
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// CHECK: { let Int },
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{ let Int },
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// CHECK: { var Int, let String },
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{ var Int, let String },
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// CHECK: { },
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{},
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// CHECK: <τ_0_0, τ_0_1, τ_0_2> { var τ_0_0, let τ_0_2 } <Int, String, Optional<Double>>
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<X, Y, Z>{ var X, let Z }<Int, String, Optional<Double>>
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// CHECK: ) -> ()
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) -> () {
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entry(%0 : @unowned $<E>{ var E }<F>, %1 : @unowned $<F: P>{ let F }<G>, %2 : @unowned $<G: P>{ var G }<Q>, %3 : @unowned ${ let Int }, %4 : @unowned ${ var Int, let String }, %5 : @unowned ${}, %6 : @unowned $<XX, YY, ZZ>{ var XX, let ZZ }<Int, String, Optional<Double>>):
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @same_generic_param_name_in_multiple_box_signatures : $@convention(thin) (
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sil [ossa] @same_generic_param_name_in_multiple_box_signatures : $@convention(thin) (
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// CHECK: <τ_0_0> { var τ_0_0 } <Int>,
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<A> { var A } <Int>,
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// CHECK: <τ_0_0> { var τ_0_0 } <String>
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<A> { var A } <String>
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// CHECK: ) -> ()
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) -> () {
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entry(%0 : @unowned $<A> { var A } <Int>, %1 : @unowned $<A> { var A } <String>):
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @same_generic_param_name_in_outer_scope : $@convention(thin) <A> (
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sil [ossa] @same_generic_param_name_in_outer_scope : $@convention(thin) <A> (
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// CHECK: <τ_0_0> { var τ_0_0 } <A>
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<A> { var A } <A>
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// CHECK: ) -> ()
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) -> () {
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entry(%0 : @unowned $<B> { var B } <A>):
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @box_ownership : $@convention(thin) (@owned { var Int }, @guaranteed <τ_0_0> { let τ_0_0 } <Int>) -> ()
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sil [ossa] @box_ownership : $@convention(thin) (@owned { var Int }, @guaranteed <T> { let T } <Int>) -> () {
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entry(%0 : @owned ${ var Int }, %1 : @guaranteed $<T> { let T } <Int>):
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destroy_value [dead_end] %0
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @address_of_box
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sil [ossa] @address_of_box : $@convention(thin) (@in { var Int }, @in <T> { let T } <Int>) -> () {
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// CHECK: %0 : $*{ var Int }, %1 : $*<τ_0_0> { let τ_0_0 } <Int>
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entry(%0 : $*{ var Int }, %1 : $*<T> { let T } <Int>):
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unreachable
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}
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// CHECK-LABEL: sil [ossa] @alloc_box_attrs
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sil [ossa] @alloc_box_attrs : $@convention(thin) () -> () {
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entry:
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// CHECK: %0 = alloc_box $
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%0 = alloc_box ${ let Int }
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// CHECK: %1 = alloc_box [dynamic_lifetime] $
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%1 = alloc_box [dynamic_lifetime] ${ let Int }
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// CHECK: %2 = alloc_box [reflection] $
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%2 = alloc_box [reflection] ${ let Int }
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// CHECK: %3 = alloc_box [dynamic_lifetime] [reflection] $
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%3 = alloc_box [dynamic_lifetime] [reflection] ${ let Int }
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dealloc_box %3: ${ let Int }
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dealloc_box %2: ${ let Int }
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dealloc_box %1: ${ let Int }
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dealloc_box %0: ${ let Int }
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return undef : $()
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}
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