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The intent for `@inline(always)` is to act as an optimization control. The user can rely on inlining to happen or the compiler will emit an error message. Because function values can be dynamic (closures, protocol/class lookup) this guarantee can only be upheld for direct function references. In cases where the optimizer can resolve dynamic function values the attribute shall be respected. rdar://148608854
61 lines
2.5 KiB
Plaintext
61 lines
2.5 KiB
Plaintext
// RUN: %target-sil-opt %s -verify -closure-specialize -o - | %FileCheck %s
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// Make sure we do not specialize resilientCallee.
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sil_stage canonical
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import Builtin
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import Swift
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import SwiftShims
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@_optimize(none) public func action()
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@inline(__always) public func fragileCaller()
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public func resilientCallee(fn: () -> ())
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// action()
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sil [Onone] @$s26closure_specialize_fragile6actionyyF : $@convention(thin) () -> () {
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bb0:
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%0 = tuple ()
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return %0 : $()
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} // end sil function '$s26closure_specialize_fragile6actionyyF'
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// CHECK-LABEL: sil [serialized] [heuristic_always_inline] @$s26closure_specialize_fragile0C6CalleryyF : $@convention(thin) () -> ()
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// CHECK: function_ref @$s26closure_specialize_fragile15resilientCalleeyyyc2fn_tF : $@convention(thin) (@owned @callee_owned () -> ()) -> ()
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// CHECK: return
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// fragileCaller()
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sil [serialized] [heuristic_always_inline] @$s26closure_specialize_fragile0C6CalleryyF : $@convention(thin) () -> () {
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bb0:
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// function_ref resilientCallee(fn:)
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%0 = function_ref @$s26closure_specialize_fragile15resilientCalleeyyyc2fn_tF : $@convention(thin) (@owned @callee_owned () -> ()) -> ()
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// function_ref closure #1 in fragileCaller()
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%1 = function_ref @$s26closure_specialize_fragile0C6CalleryyFyycfU_ : $@convention(thin) () -> ()
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%2 = thin_to_thick_function %1 : $@convention(thin) () -> () to $@callee_owned () -> ()
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%3 = apply %0(%2) : $@convention(thin) (@owned @callee_owned () -> ()) -> ()
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%4 = tuple ()
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return %4 : $()
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} // end sil function '$s26closure_specialize_fragile0C6CalleryyF'
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// CHECK-LABEL: sil @$s26closure_specialize_fragile15resilientCalleeyyyc2fn_tF : $@convention(thin) (@owned @callee_owned () -> ()) -> ()
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// resilientCallee(fn:)
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sil @$s26closure_specialize_fragile15resilientCalleeyyyc2fn_tF : $@convention(thin) (@owned @callee_owned () -> ()) -> () {
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bb0(%0 : $@callee_owned () -> ()):
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strong_retain %0 : $@callee_owned () -> ()
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%3 = apply %0() : $@callee_owned () -> ()
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strong_release %0 : $@callee_owned () -> ()
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%5 = tuple ()
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return %5 : $()
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} // end sil function '$s26closure_specialize_fragile15resilientCalleeyyyc2fn_tF'
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// closure #1 in fragileCaller()
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sil shared [serialized] @$s26closure_specialize_fragile0C6CalleryyFyycfU_ : $@convention(thin) () -> () {
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bb0:
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// function_ref action()
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%0 = function_ref @$s26closure_specialize_fragile6actionyyF : $@convention(thin) () -> ()
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%1 = apply %0() : $@convention(thin) () -> ()
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%2 = tuple ()
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return %2 : $()
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} // end sil function '$s26closure_specialize_fragile0C6CalleryyFyycfU_'
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