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94ce4c2ac3
Otherwise, we don't want them to be linkonce_odr at the LLVM level to avoid unnecessary link-time overhead.
66 lines
2.3 KiB
Swift
66 lines
2.3 KiB
Swift
// RUN: %target-swift-frontend -emit-silgen -verify %s | %FileCheck %s
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func values(_ arg: @escaping @convention(c) (Int) -> Int) -> @convention(c) (Int) -> Int {
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return arg
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}
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// CHECK-LABEL: sil hidden @_T019c_function_pointers6valuesS2iXCS2iXCF
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// CHECK: bb0(%0 : $@convention(c) (Int) -> Int):
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// CHECK: return %0 : $@convention(c) (Int) -> Int
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@discardableResult
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func calls(_ arg: @convention(c) (Int) -> Int, _ x: Int) -> Int {
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return arg(x)
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}
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// CHECK-LABEL: sil hidden @_T019c_function_pointers5callsS3iXC_SitF
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// CHECK: bb0(%0 : $@convention(c) (Int) -> Int, %1 : $Int):
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// CHECK: [[RESULT:%.*]] = apply %0(%1)
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// CHECK: return [[RESULT]]
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@discardableResult
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func calls_no_args(_ arg: @convention(c) () -> Int) -> Int {
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return arg()
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}
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func global(_ x: Int) -> Int { return x }
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func no_args() -> Int { return 42 }
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// CHECK-LABEL: sil hidden @_T019c_function_pointers0B19_to_swift_functionsySiF
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func pointers_to_swift_functions(_ x: Int) {
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// CHECK: bb0([[X:%.*]] : $Int):
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func local(_ y: Int) -> Int { return y }
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// CHECK: [[GLOBAL_C:%.*]] = function_ref @_T019c_function_pointers6globalS2iFTo
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// CHECK: apply {{.*}}([[GLOBAL_C]], [[X]])
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calls(global, x)
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// CHECK: [[LOCAL_C:%.*]] = function_ref @_T019c_function_pointers0B19_to_swift_functionsySiF5localL_S2iFTo
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// CHECK: apply {{.*}}([[LOCAL_C]], [[X]])
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calls(local, x)
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// CHECK: [[CLOSURE_C:%.*]] = function_ref @_T019c_function_pointers0B19_to_swift_functionsySiFS2icfU_To
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// CHECK: apply {{.*}}([[CLOSURE_C]], [[X]])
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calls({ $0 + 1 }, x)
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calls_no_args(no_args)
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// CHECK: [[NO_ARGS_C:%.*]] = function_ref @_T019c_function_pointers7no_argsSiyFTo
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// CHECK: apply {{.*}}([[NO_ARGS_C]])
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}
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func unsupported(_ a: Any) -> Int { return 0 }
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func pointers_to_bad_swift_functions(_ x: Int) {
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calls(unsupported, x) // expected-error{{C function pointer signature '(Any) -> Int' is not compatible with expected type '@convention(c) (Int) -> Int'}}
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}
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// CHECK-LABEL: sil private @_T019c_function_pointers22StructWithInitializersV3fn1yyXCvfiyycfU_ : $@convention(thin) () -> () {
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// CHECK-LABEL: sil private [thunk] @_T019c_function_pointers22StructWithInitializersV3fn1yyXCvfiyycfU_To : $@convention(c) () -> () {
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struct StructWithInitializers {
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let fn1: @convention(c) () -> () = {}
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init(a: ()) {}
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init(b: ()) {}
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}
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