diff options
Diffstat (limited to 'test/Transforms/ObjCARC/tail-call-invariant-enforcement.ll')
-rw-r--r-- | test/Transforms/ObjCARC/tail-call-invariant-enforcement.ll | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/test/Transforms/ObjCARC/tail-call-invariant-enforcement.ll b/test/Transforms/ObjCARC/tail-call-invariant-enforcement.ll new file mode 100644 index 0000000000000..26cd67727e6a6 --- /dev/null +++ b/test/Transforms/ObjCARC/tail-call-invariant-enforcement.ll @@ -0,0 +1,74 @@ +; 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 +} + |