mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
3ae6d7cb4d
On architectures where the calling convention uses the same argument register as
return register this allows the argument register to be live through the calls.
We use LLVM's 'returned' attribute on the parameter to facilitate this.
We used to perform this optimization via an optimization pass. This was ripped
out some time ago around commit 955e4ed652.
By using LLVM's 'returned' attribute on swift_*retain, we get the same
optimization from the LLVM backend.
71 lines
3.5 KiB
Swift
71 lines
3.5 KiB
Swift
// RUN: %swift -target thumbv7--windows-itanium -emit-ir -parse-as-library -parse-stdlib -module-name dllimport %s -o - -enable-source-import -I %S | %FileCheck %s -check-prefix CHECK -check-prefix CHECK-NO-OPT
|
|
// RUN: %swift -target thumbv7--windows-itanium -O -emit-ir -parse-as-library -parse-stdlib -module-name dllimport -primary-file %s -o - -enable-source-import -I %S | %FileCheck %s -check-prefix CHECK -check-prefix CHECK-OPT
|
|
|
|
// REQUIRES: CODEGENERATOR=ARM
|
|
|
|
import dllexport
|
|
|
|
public func get_ci() -> dllexport.c {
|
|
return dllexport.ci
|
|
}
|
|
|
|
public func get_c_type() -> dllexport.c.Type {
|
|
return dllexport.c
|
|
}
|
|
|
|
public class d : c {
|
|
override init() {
|
|
super.init()
|
|
}
|
|
|
|
@inline(never)
|
|
func f(_ : dllexport.c) { }
|
|
}
|
|
|
|
struct s : p {
|
|
func f() { }
|
|
}
|
|
|
|
func f(di : d) {
|
|
di.f(get_ci())
|
|
}
|
|
|
|
func blackhole<F>(_ : F) { }
|
|
|
|
public func g() {
|
|
blackhole({ () -> () in })
|
|
}
|
|
|
|
// CHECK-NO-OPT-DAG: @_swift_allocObject = external dllimport global %swift.refcounted* (%swift.type*, i32, i32)*
|
|
// CHECK-NO-OPT-DAG: @_swift_deallocObject = external dllimport global void (%swift.refcounted*, i32, i32)*
|
|
// CHECK-NO-OPT-DAG: @_swift_release = external dllimport global void (%swift.refcounted*)
|
|
// CHECK-NO-OPT-DAG: @_swift_retain = external dllimport global %swift.refcounted* (%swift.refcounted*)
|
|
// CHECK-NO-OPT-DAG: @_swift_slowAlloc = external dllimport global i8* (i32, i32)*
|
|
// CHECK-NO-OPT-DAG: @_swift_slowDealloc = external dllimport global void (i8*, i32, i32)*
|
|
// CHECK-NO-OPT-DAG: @_T09dllexport1cCN = external dllimport global %swift.type
|
|
// CHECK-NO-OPT-DAG: @_T09dllexport1pMp = external dllimport global %swift.protocol
|
|
// CHECK-NO-OPT-DAG: @_T0ytN = external dllimport global %swift.full_type
|
|
// CHECK-NO-OPT-DAG: @_T0BoWV = external dllimport global i8*
|
|
// CHECK-NO-OPT-DAG: declare dllimport swiftcc i8* @_T09dllexport2ciAA1cCvau()
|
|
// CHECK-NO-OPT-DAG: declare dllimport swiftcc %swift.refcounted* @_T09dllexport1cCfd(%T9dllexport1cC* swiftself)
|
|
// CHECK-NO-OPT-DAG: declare dllimport %swift.type* @_T09dllexport1cCMa()
|
|
// CHECK-NO-OPT-DAG: declare dllimport void @swift_deallocClassInstance(%swift.refcounted*, i32, i32)
|
|
// CHECK-NO-OPT-DAG: define linkonce_odr hidden i8* @swift_rt_swift_slowAlloc(i32, i32)
|
|
// CHECK-NO-OPT-DAG: define linkonce_odr hidden void @swift_rt_swift_release(%swift.refcounted*)
|
|
// CHECK-NO-OPT-DAG: define linkonce_odr hidden %swift.refcounted* @swift_rt_swift_retain(%swift.refcounted* returned)
|
|
// CHECK-NO-OPT-DAG: define linkonce_odr hidden void @swift_rt_swift_slowDealloc(i8*, i32, i32)
|
|
|
|
// CHECK-OPT-DAG: @_swift_retain = external dllimport local_unnamed_addr global %swift.refcounted* (%swift.refcounted*)
|
|
// CHECK-OPT-DAG: @_T0BoWV = external dllimport global i8*
|
|
// CHECK-OPT-DAG: @_T09dllexport1cCN = external dllimport global %swift.type
|
|
// CHECK-OPT-DAG: @_T09dllexport1pMp = external dllimport global %swift.protocol
|
|
// CHECK-OPT-DAG: @_swift_slowAlloc = external dllimport local_unnamed_addr global i8* (i32, i32)*
|
|
// CHECK-OPT-DAG: @_swift_slowDealloc = external dllimport local_unnamed_addr global void (i8*, i32, i32)*
|
|
// CHECK-OPT-DAG: declare dllimport swiftcc i8* @_T09dllexport2ciAA1cCvau()
|
|
// CHECK-OPT-DAG: declare dllimport %swift.type* @_T09dllexport1cCMa()
|
|
// CHECK-OPT-DAG: declare dllimport void @swift_deallocClassInstance(%swift.refcounted*, i32, i32)
|
|
// CHECK-OPT-DAG: declare dllimport swiftcc %swift.refcounted* @_T09dllexport1cCfd(%T9dllexport1cC* swiftself)
|
|
// CHECK-OPT-DAG: define linkonce_odr hidden i8* @swift_rt_swift_slowAlloc(i32, i32)
|
|
// CHECK-OPT-DAG: define linkonce_odr hidden void @swift_rt_swift_slowDealloc(i8*, i32, i32)
|
|
|