mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-24 08:29:39 +00:00
899b2f9d0b
Specifically: 1. Added checks that unwind is being properly added to various instructions. 2. Fixed the declaration/calling of objc_release to have a return type of void. 3. Moved all checks to precede the functions and added checks to ensure that the checks would only match inside the specific function that we are attempting to check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179973 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
2.7 KiB
LLVM
90 lines
2.7 KiB
LLVM
; RUN: opt -objc-arc -S < %s | FileCheck %s
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declare void @objc_release(i8* %x)
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declare i8* @objc_retain(i8* %x)
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declare i8* @objc_autorelease(i8* %x)
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declare i8* @objc_autoreleaseReturnValue(i8* %x)
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declare i8* @objc_retainAutoreleasedReturnValue(i8* %x)
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declare i8* @tmp(i8*)
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; Never tail call objc_autorelease.
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; CHECK: define i8* @test0(i8* %x) [[NUW:#[0-9]+]] {
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; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x) [[NUW]]
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; CHECK: %tmp1 = call i8* @objc_autorelease(i8* %x) [[NUW]]
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; CHECK: }
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define i8* @test0(i8* %x) nounwind {
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entry:
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%tmp0 = call i8* @objc_autorelease(i8* %x)
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%tmp1 = tail call i8* @objc_autorelease(i8* %x)
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ret i8* %x
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}
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; Always tail call autoreleaseReturnValue.
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; CHECK: define i8* @test1(i8* %x) [[NUW]] {
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; CHECK: %tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x) [[NUW]]
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; CHECK: %tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x) [[NUW]]
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; CHECK: }
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define i8* @test1(i8* %x) nounwind {
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entry:
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%tmp0 = call i8* @objc_autoreleaseReturnValue(i8* %x)
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%tmp1 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
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ret i8* %x
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}
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; Always tail call objc_retain.
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; CHECK: define i8* @test2(i8* %x) [[NUW]] {
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; CHECK: %tmp0 = tail call i8* @objc_retain(i8* %x) [[NUW]]
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; CHECK: %tmp1 = tail call i8* @objc_retain(i8* %x) [[NUW]]
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; CHECK: }
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define i8* @test2(i8* %x) nounwind {
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entry:
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%tmp0 = call i8* @objc_retain(i8* %x)
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%tmp1 = tail call i8* @objc_retain(i8* %x)
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ret i8* %x
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}
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; Always tail call objc_retainAutoreleasedReturnValue.
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; CHECK: define i8* @test3(i8* %x) [[NUW]] {
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; CHECK: %tmp0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %y) [[NUW]]
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; CHECK: %tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %z) [[NUW]]
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; CHECK: }
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define i8* @test3(i8* %x) nounwind {
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entry:
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%y = call i8* @tmp(i8* %x)
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%tmp0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %y)
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%z = call i8* @tmp(i8* %x)
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%tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %z)
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ret i8* %x
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}
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; By itself, we should never change whether or not objc_release is tail called.
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; CHECK: define void @test4(i8* %x) [[NUW]] {
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; CHECK: call void @objc_release(i8* %x) [[NUW]]
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; CHECK: tail call void @objc_release(i8* %x) [[NUW]]
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; CHECK: }
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define void @test4(i8* %x) nounwind {
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entry:
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call void @objc_release(i8* %x)
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tail call void @objc_release(i8* %x)
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ret void
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}
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; If we convert a tail called @objc_autoreleaseReturnValue to an
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; @objc_autorelease, ensure that the tail call is removed.
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; CHECK: define i8* @test5(i8* %x) [[NUW]] {
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; CHECK: %tmp0 = call i8* @objc_autorelease(i8* %x) [[NUW]]
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; CHECK: }
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define i8* @test5(i8* %x) nounwind {
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entry:
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%tmp0 = tail call i8* @objc_autoreleaseReturnValue(i8* %x)
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ret i8* %tmp0
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}
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; CHECK: attributes [[NUW]] = { nounwind }
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