forked from OSchip/llvm-project
105 lines
3.3 KiB
LLVM
105 lines
3.3 KiB
LLVM
; RUN: opt -objc-arc -S < %s | FileCheck %s
|
|
|
|
declare void @objc_release(i8* %x)
|
|
declare i8* @objc_retain(i8* %x)
|
|
declare i8* @objc_autorelease(i8* %x)
|
|
declare i8* @objc_autoreleaseReturnValue(i8* %x)
|
|
declare i8* @objc_retainAutoreleasedReturnValue(i8* %x)
|
|
declare i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %x)
|
|
declare i8* @tmp(i8*)
|
|
|
|
; Never tail call objc_autorelease.
|
|
|
|
; CHECK: define i8* @test0(i8* %x) [[NUW:#[0-9]+]] {
|
|
; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x) [[NUW]]
|
|
; CHECK: %tmp1 = call i8* @objc_autorelease(i8* %x) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test0(i8* %x) nounwind {
|
|
entry:
|
|
%tmp0 = call i8* @objc_autorelease(i8* %x)
|
|
%tmp1 = tail call i8* @objc_autorelease(i8* %x)
|
|
|
|
ret i8* %x
|
|
}
|
|
|
|
; Always tail call autoreleaseReturnValue.
|
|
|
|
; CHECK: define i8* @test1(i8* %x) [[NUW]] {
|
|
; CHECK: %tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x) [[NUW]]
|
|
; CHECK: %tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test1(i8* %x) nounwind {
|
|
entry:
|
|
%tmp0 = call i8* @objc_autoreleaseReturnValue(i8* %x)
|
|
%tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
|
|
ret i8* %x
|
|
}
|
|
|
|
; Always tail call objc_retain.
|
|
|
|
; CHECK: define i8* @test2(i8* %x) [[NUW]] {
|
|
; CHECK: %tmp0 = tail call i8* @objc_retain(i8* %x) [[NUW]]
|
|
; CHECK: %tmp1 = tail call i8* @objc_retain(i8* %x) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test2(i8* %x) nounwind {
|
|
entry:
|
|
%tmp0 = call i8* @objc_retain(i8* %x)
|
|
%tmp1 = tail call i8* @objc_retain(i8* %x)
|
|
ret i8* %x
|
|
}
|
|
|
|
; Always tail call objc_retainAutoreleasedReturnValue.
|
|
; CHECK: define i8* @test3(i8* %x) [[NUW]] {
|
|
; CHECK: %tmp0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %y) [[NUW]]
|
|
; CHECK: %tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %z) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test3(i8* %x) nounwind {
|
|
entry:
|
|
%y = call i8* @tmp(i8* %x)
|
|
%tmp0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %y)
|
|
%z = call i8* @tmp(i8* %x)
|
|
%tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %z)
|
|
ret i8* %x
|
|
}
|
|
|
|
; By itself, we should never change whether or not objc_release is tail called.
|
|
|
|
; CHECK: define void @test4(i8* %x) [[NUW]] {
|
|
; CHECK: call void @objc_release(i8* %x) [[NUW]]
|
|
; CHECK: tail call void @objc_release(i8* %x) [[NUW]]
|
|
; CHECK: }
|
|
define void @test4(i8* %x) nounwind {
|
|
entry:
|
|
call void @objc_release(i8* %x)
|
|
tail call void @objc_release(i8* %x)
|
|
ret void
|
|
}
|
|
|
|
; If we convert a tail called @objc_autoreleaseReturnValue to an
|
|
; @objc_autorelease, ensure that the tail call is removed.
|
|
; CHECK: define i8* @test5(i8* %x) [[NUW]] {
|
|
; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test5(i8* %x) nounwind {
|
|
entry:
|
|
%tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
|
|
ret i8* %tmp0
|
|
}
|
|
|
|
; Always tail call objc_unsafeClaimAutoreleasedReturnValue.
|
|
; CHECK: define i8* @test6(i8* %x) [[NUW]] {
|
|
; CHECK: %tmp0 = tail call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %y) [[NUW]]
|
|
; CHECK: %tmp1 = tail call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %z) [[NUW]]
|
|
; CHECK: }
|
|
define i8* @test6(i8* %x) nounwind {
|
|
entry:
|
|
%y = call i8* @tmp(i8* %x)
|
|
%tmp0 = call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %y)
|
|
%z = call i8* @tmp(i8* %x)
|
|
%tmp1 = tail call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %z)
|
|
ret i8* %x
|
|
}
|
|
|
|
; CHECK: attributes [[NUW]] = { nounwind }
|
|
|