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Type annotations for instruction operands are omitted, e.g. ``` %3 = struct $S(%1, %2) ``` Operand types are redundant anyway and were only used for sanity checking in the SIL parser. But: operand types _are_ printed if the definition of the operand value was not printed yet. This happens: * if the block with the definition appears after the block where the operand's instruction is located * if a block or instruction is printed in isolation, e.g. in a debugger The old behavior can be restored with `-Xllvm -sil-print-types`. This option is added to many existing test files which check for operand types in their check-lines.
111 lines
4.1 KiB
Swift
111 lines
4.1 KiB
Swift
// RUN: %target-swift-emit-silgen -Xllvm -sil-print-types -verify %s | %FileCheck %s
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if true {
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var x = 0 // expected-warning {{variable 'x' was never mutated; consider changing to 'let' constant}}
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func local() -> Int { return 0 }
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func localWithContext() -> Int { return x }
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func transitiveWithoutContext() -> Int { return local() }
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// Can't convert a closure with context to a C function pointer
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let _: @convention(c) () -> Int = { x } // expected-error{{cannot be formed from a closure that captures context}}
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let _: @convention(c) () -> Int = { [x] in x } // expected-error{{cannot be formed from a closure that captures context}}
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let _: @convention(c) () -> Int = localWithContext // expected-error{{cannot be formed from a local function that captures context}}
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let _: @convention(c) () -> Int = local
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let _: @convention(c) () -> Int = transitiveWithoutContext
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}
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class C {
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static func staticMethod() -> Int { return 0 }
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class func classMethod() -> Int { return 0 }
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}
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class Generic<X : C> {
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func f<Y : C>(_ y: Y) {
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let _: @convention(c) () -> Int = { return 0 }
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let _: @convention(c) () -> Int = { return X.staticMethod() } // expected-error{{cannot be formed from a closure that captures generic parameters}}
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let _: @convention(c) () -> Int = { return Y.staticMethod() } // expected-error{{cannot be formed from a closure that captures generic parameters}}
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}
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}
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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 [ossa] @$s19c_function_pointers6valuesyS2iXCS2iXCF
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// CHECK: bb0(%0 : $@convention(c) (Int) -> Int):
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// CHECK: return %0 : $@convention(c) (Int) -> Int
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@discardableResult
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func calls(_ arg: @convention(c) (Int) -> Int, _ x: Int) -> Int {
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return arg(x)
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}
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// CHECK-LABEL: sil hidden [ossa] @$s19c_function_pointers5callsyS3iXC_SitF
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// CHECK: bb0(%0 : $@convention(c) (Int) -> Int, %1 : $Int):
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// CHECK: [[RESULT:%.*]] = apply %0(%1)
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// CHECK: return [[RESULT]]
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@discardableResult
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func calls_no_args(_ arg: @convention(c) () -> Int) -> Int {
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return arg()
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}
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func global(_ x: Int) -> Int { return x }
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func no_args() -> Int { return 42 }
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// CHECK-LABEL: sil hidden [ossa] @$s19c_function_pointers0B19_to_swift_functionsyySiF
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func pointers_to_swift_functions(_ x: Int) {
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// CHECK: bb0([[X:%.*]] : $Int):
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func local(_ y: Int) -> Int { return y }
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// CHECK: [[GLOBAL_C:%.*]] = function_ref @$s19c_function_pointers6globalyS2iFTo
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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 @$s19c_function_pointers0B19_to_swift_functionsyySiF5localL_yS2iFTo
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// CHECK: apply {{.*}}([[LOCAL_C]], [[X]])
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calls(local, x)
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// CHECK: [[CLOSURE_C:%.*]] = function_ref @$s19c_function_pointers0B19_to_swift_functionsyySiFS2icfU_To
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// CHECK: apply {{.*}}([[CLOSURE_C]], [[X]])
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calls({ $0 + 1 }, x)
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calls_no_args(no_args)
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// CHECK: [[NO_ARGS_C:%.*]] = function_ref @$s19c_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 [ossa] @$s19c_function_pointers22StructWithInitializersV3fn1yyXCvpfiyycfU_ : $@convention(thin) () -> () {
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// CHECK-LABEL: sil private [thunk] [ossa] @$s19c_function_pointers22StructWithInitializersV3fn1yyXCvpfiyycfU_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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func pointers_to_nested_local_functions_in_generics<T>(x: T) -> Int{
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func foo(y: Int) -> Int { return y }
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return calls(foo, 0)
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}
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func capture_list_no_captures(x: Int) {
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calls({ [x] in $0 }, 0) // expected-warning {{capture 'x' was never used}}
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}
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class Selfless {
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func capture_dynamic_self() {
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calls_no_args { _ = Self.self; return 0 }
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// expected-error@-1 {{a C function pointer cannot be formed from a closure that captures dynamic Self type}}
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}
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}
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