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; RUN: opt -objc-arc -S < %s | FileCheck %s
declare i8* @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)
; Never tail call objc_autorelease.
define i8* @test0(i8* %x) {
entry:
; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x)
%tmp0 = call i8* @objc_autorelease(i8* %x)
; CHECK: %tmp1 = call i8* @objc_autorelease(i8* %x)
%tmp1 = tail call i8* @objc_autorelease(i8* %x)
ret i8* %x
}
; Always tail call autoreleaseReturnValue.
define i8* @test1(i8* %x) {
entry:
; CHECK: %tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
%tmp0 = call i8* @objc_autoreleaseReturnValue(i8* %x)
; CHECK: %tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
%tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
ret i8* %x
}
; Always tail call objc_retain.
define i8* @test2(i8* %x) {
entry:
; CHECK: %tmp0 = tail call i8* @objc_retain(i8* %x)
%tmp0 = call i8* @objc_retain(i8* %x)
; CHECK: %tmp1 = tail call i8* @objc_retain(i8* %x)
%tmp1 = tail call i8* @objc_retain(i8* %x)
ret i8* %x
}
define i8* @tmp(i8* %x) {
ret i8* %x
}
; Always tail call objc_retainAutoreleasedReturnValue.
define i8* @test3(i8* %x) {
entry:
%y = call i8* @tmp(i8* %x)
; CHECK: %tmp0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %y)
%tmp0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %y)
%z = call i8* @tmp(i8* %x)
; CHECK: %tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %z)
%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.
define i8* @test4(i8* %x) {
entry:
; CHECK: %tmp0 = call i8* @objc_release(i8* %x)
%tmp0 = call i8* @objc_release(i8* %x)
; CHECK: %tmp1 = tail call i8* @objc_release(i8* %x)
%tmp1 = tail call i8* @objc_release(i8* %x)
ret i8* %x
}
; If we convert a tail called @objc_autoreleaseReturnValue to an
; @objc_autorelease, ensure that the tail call is removed.
define i8* @test5(i8* %x) {
entry:
; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x)
%tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
ret i8* %tmp0
}
; If we convert a called @objc_autorelease to an @objc_autoreleaseReturnValue,
; ensure that the tail call is added.
define i8* @test6(i8* %x) {
entry:
; CHECK: %tmp0 = tail call i8* @objc_retain(i8* %x)
%tmp0 = tail call i8* @objc_retain(i8* %x)
; CHECK: %tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
%tmp1 = call i8* @objc_autorelease(i8* %x)
ret i8* %x
}
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