1 ; RUN: opt -S -objc-arc -objc-arc-contract < %s | FileCheck %s 2 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 4 declare i8* @objc_unretainedObject(i8*) 5 declare i8* @objc_retainAutoreleasedReturnValue(i8*) 6 declare i8* @objc_autoreleaseReturnValue(i8*) 7 declare i8* @objc_msgSend(i8*, i8*, ...) 8 declare void @objc_release(i8*) 9 10 ; Test that the optimizer can create an objc_retainAutoreleaseReturnValue 11 ; declaration even if no objc_retain declaration exists. 12 ; rdar://9401303 13 14 ; CHECK: define i8* @test0(i8* %p) { 15 ; CHECK-NEXT: entry: 16 ; CHECK-NEXT: %0 = tail call i8* @objc_retainAutoreleaseReturnValue(i8* %p) [[NUW:#[0-9]+]] 17 ; CHECK-NEXT: ret i8* %0 18 ; CHECK-NEXT: } 19 20 define i8* @test0(i8* %p) { 21 entry: 22 %call = tail call i8* @objc_unretainedObject(i8* %p) 23 %0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind 24 %1 = tail call i8* @objc_autoreleaseReturnValue(i8* %0) nounwind 25 ret i8* %1 26 } 27 28 ; Properly create the @objc_retain declaration when it doesn't already exist. 29 ; rdar://9825114 30 31 ; CHECK: @test1( 32 ; CHECK: @objc_retain( 33 ; CHECK: @objc_retainAutoreleasedReturnValue( 34 ; CHECK: @objc_release( 35 ; CHECK: @objc_release( 36 ; CHECK: } 37 define void @test1(i8* %call88) nounwind { 38 entry: 39 %tmp1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call88) nounwind 40 %call94 = invoke i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*)*)(i8* %tmp1) 41 to label %invoke.cont93 unwind label %lpad91 42 43 invoke.cont93: ; preds = %entry 44 %tmp2 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call94) nounwind 45 call void @objc_release(i8* %tmp1) nounwind 46 invoke void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*)*)(i8* %tmp2) 47 to label %invoke.cont102 unwind label %lpad100 48 49 invoke.cont102: ; preds = %invoke.cont93 50 call void @objc_release(i8* %tmp2) nounwind, !clang.imprecise_release !0 51 unreachable 52 53 lpad91: ; preds = %entry 54 %exn91 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 55 cleanup 56 unreachable 57 58 lpad100: ; preds = %invoke.cont93 59 %exn100 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 60 cleanup 61 call void @objc_release(i8* %tmp2) nounwind, !clang.imprecise_release !0 62 unreachable 63 } 64 65 declare i32 @__gxx_personality_v0(...) 66 67 !0 = metadata !{} 68 69 ; CHECK: attributes [[NUW]] = { nounwind } 70
