; RUN: opt -S -passes=objc-arc < %s | FileCheck %s
declare ptr @llvm.objc.retain(ptr)
declare void @llvm.objc.release(ptr)
declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr)
declare ptr @objc_msgSend(ptr, ptr, ...)
declare void @use_pointer(ptr)
declare void @callee()
declare ptr @returner()
; ARCOpt shouldn't try to move the releases to the block containing the invoke.
; CHECK-LABEL: define void @test0(
; CHECK: invoke.cont:
; CHECK: call void @llvm.objc.release(ptr %zipFile) [[NUW:#[0-9]+]], !clang.imprecise_release !0
; CHECK: ret void
; CHECK: lpad:
; CHECK: call void @llvm.objc.release(ptr %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: ret void
; CHECK-NEXT: }
define void @test0(ptr %zipFile) personality ptr @__gxx_personality_v0 {
entry:
call ptr @llvm.objc.retain(ptr %zipFile) nounwind
call void @use_pointer(ptr %zipFile)
invoke void @objc_msgSend(ptr %zipFile)
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
call void @llvm.objc.release(ptr %zipFile) nounwind, !clang.imprecise_release !0
ret void
lpad: ; preds = %entry
%exn = landingpad {ptr, i32}
cleanup
call void @llvm.objc.release(ptr %zipFile) nounwind, !clang.imprecise_release !0
ret void
}
; ARCOpt should move the release before the callee calls.
; CHECK-LABEL: define void @test1(
; CHECK: invoke.cont:
; CHECK: call void @llvm.objc.release(ptr %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: call void @callee()
; CHECK: br label %done
; CHECK: lpad:
; CHECK: call void @llvm.objc.release(ptr %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: call void @callee()
; CHECK: br label %done
; CHECK: done:
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test1(ptr %zipFile) personality ptr @__gxx_personality_v0 {
entry:
call ptr @llvm.objc.retain(ptr %zipFile) nounwind
call void @use_pointer(ptr %zipFile)
invoke void @objc_msgSend(ptr %zipFile)
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
call void @callee()
br label %done
lpad: ; preds = %entry
%exn = landingpad {ptr, i32}
cleanup
call void @callee()
br label %done
done:
call void @llvm.objc.release(ptr %zipFile) nounwind, !clang.imprecise_release !0
ret void
}
; The optimizer should ignore invoke unwind paths consistently.
; PR12265
; CHECK: define void @test2() personality ptr @__objc_personality_v0 {
; CHECK: invoke.cont:
; CHECK-NEXT: call ptr @llvm.objc.retain
; CHECK-NOT: @llvm.objc.r
; CHECK: finally.cont:
; CHECK-NEXT: call void @llvm.objc.release
; CHECK-NOT: @objc
; CHECK: finally.rethrow:
; CHECK-NOT: @objc
; CHECK: }
define void @test2() personality ptr @__objc_personality_v0 {
entry:
%call = invoke ptr @objc_msgSend()
to label %invoke.cont unwind label %finally.rethrow, !clang.arc.no_objc_arc_exceptions !0
invoke.cont: ; preds = %entry
%tmp1 = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %call) nounwind
call void @objc_msgSend(), !clang.arc.no_objc_arc_exceptions !0
invoke void @use_pointer(ptr %call)
to label %finally.cont unwind label %finally.rethrow, !clang.arc.no_objc_arc_exceptions !0
finally.cont: ; preds = %invoke.cont
tail call void @llvm.objc.release(ptr %call) nounwind, !clang.imprecise_release !0
ret void
finally.rethrow: ; preds = %invoke.cont, %entry
%tmp2 = landingpad { ptr, i32 }
catch ptr null
unreachable
}
; Don't try to place code on invoke critical edges.
; CHECK-LABEL: define void @test3(
; CHECK: if.end:
; CHECK-NEXT: call void @llvm.objc.release(ptr %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test3(ptr %p, i1 %b) personality ptr @__objc_personality_v0 {
entry:
%0 = call ptr @llvm.objc.retain(ptr %p)
call void @callee()
br i1 %b, label %if.else, label %if.then
if.then:
invoke void @use_pointer(ptr %p)
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
if.else:
invoke void @use_pointer(ptr %p)
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r = landingpad { ptr, i32 }
cleanup
ret void
if.end:
call void @llvm.objc.release(ptr %p)
ret void
}
; Like test3, but with ARC-relevant exception handling.
; CHECK-LABEL: define void @test4(
; CHECK: lpad:
; CHECK-NEXT: %r = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: call void @llvm.objc.release(ptr %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK: if.end:
; CHECK-NEXT: call void @llvm.objc.release(ptr %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test4(ptr %p, i1 %b) personality ptr @__objc_personality_v0 {
entry:
%0 = call ptr @llvm.objc.retain(ptr %p)
call void @callee()
br i1 %b, label %if.else, label %if.then
if.then:
invoke void @use_pointer(ptr %p)
to label %if.end unwind label %lpad
if.else:
invoke void @use_pointer(ptr %p)
to label %if.end unwind label %lpad
lpad:
%r = landingpad { ptr, i32 }
cleanup
call void @llvm.objc.release(ptr %p)
ret void
if.end:
call void @llvm.objc.release(ptr %p)
ret void
}
; Don't turn the retainAutoreleaseReturnValue into retain, because it's
; for an invoke which we can assume codegen will put immediately prior.
; CHECK-LABEL: define void @test5(
; CHECK: call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %z)
; CHECK: }
define void @test5() personality ptr @__objc_personality_v0 {
entry:
%z = invoke ptr @returner()
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r13 = landingpad { ptr, i32 }
cleanup
ret void
if.end:
call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %z)
ret void
}
; Like test5, but there's intervening code.
; CHECK-LABEL: define void @test6(
; CHECK: call ptr @llvm.objc.retain(ptr %z)
; CHECK: }
define void @test6() personality ptr @__objc_personality_v0 {
entry:
%z = invoke ptr @returner()
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r13 = landingpad { ptr, i32 }
cleanup
ret void
if.end:
call void @callee()
call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %z)
ret void
}
declare i32 @__gxx_personality_v0(...)
declare i32 @__objc_personality_v0(...)
; CHECK: attributes [[NUW]] = { nounwind }
!0 = !{}
Codebase Browser
llvm