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|
; RUN: opt -S -objc-arc < %s | FileCheck %s
declare i8* @llvm.objc.retain(i8*)
declare void @llvm.objc.release(i8*)
declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
declare i8* @objc_msgSend(i8*, i8*, ...)
declare void @use_pointer(i8*)
declare void @callee()
declare i8* @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(i8* %zipFile) [[NUW:#[0-9]+]], !clang.imprecise_release !0
; CHECK: ret void
; CHECK: lpad:
; CHECK: call void @llvm.objc.release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: ret void
; CHECK-NEXT: }
define void @test0(i8* %zipFile) personality i32 (...)* @__gxx_personality_v0 {
entry:
call i8* @llvm.objc.retain(i8* %zipFile) nounwind
call void @use_pointer(i8* %zipFile)
invoke void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*)*)(i8* %zipFile)
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
call void @llvm.objc.release(i8* %zipFile) nounwind, !clang.imprecise_release !0
ret void
lpad: ; preds = %entry
%exn = landingpad {i8*, i32}
cleanup
call void @llvm.objc.release(i8* %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(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: call void @callee()
; CHECK: br label %done
; CHECK: lpad:
; CHECK: call void @llvm.objc.release(i8* %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(i8* %zipFile) personality i32 (...)* @__gxx_personality_v0 {
entry:
call i8* @llvm.objc.retain(i8* %zipFile) nounwind
call void @use_pointer(i8* %zipFile)
invoke void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*)*)(i8* %zipFile)
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
call void @callee()
br label %done
lpad: ; preds = %entry
%exn = landingpad {i8*, i32}
cleanup
call void @callee()
br label %done
done:
call void @llvm.objc.release(i8* %zipFile) nounwind, !clang.imprecise_release !0
ret void
}
; The optimizer should ignore invoke unwind paths consistently.
; PR12265
; CHECK: define void @test2() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
; CHECK: invoke.cont:
; CHECK-NEXT: call i8* @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 i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
entry:
%call = invoke i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* ()*)()
to label %invoke.cont unwind label %finally.rethrow, !clang.arc.no_objc_arc_exceptions !0
invoke.cont: ; preds = %entry
%tmp1 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call) nounwind
call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void ()*)(), !clang.arc.no_objc_arc_exceptions !0
invoke void @use_pointer(i8* %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(i8* %call) nounwind, !clang.imprecise_release !0
ret void
finally.rethrow: ; preds = %invoke.cont, %entry
%tmp2 = landingpad { i8*, i32 }
catch i8* 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(i8* %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test3(i8* %p, i1 %b) personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
entry:
%0 = call i8* @llvm.objc.retain(i8* %p)
call void @callee()
br i1 %b, label %if.else, label %if.then
if.then:
invoke void @use_pointer(i8* %p)
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
if.else:
invoke void @use_pointer(i8* %p)
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r = landingpad { i8*, i32 }
cleanup
ret void
if.end:
call void @llvm.objc.release(i8* %p)
ret void
}
; Like test3, but with ARC-relevant exception handling.
; CHECK-LABEL: define void @test4(
; CHECK: lpad:
; CHECK-NEXT: %r = landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: call void @llvm.objc.release(i8* %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK: if.end:
; CHECK-NEXT: call void @llvm.objc.release(i8* %p) [[NUW]]
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test4(i8* %p, i1 %b) personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
entry:
%0 = call i8* @llvm.objc.retain(i8* %p)
call void @callee()
br i1 %b, label %if.else, label %if.then
if.then:
invoke void @use_pointer(i8* %p)
to label %if.end unwind label %lpad
if.else:
invoke void @use_pointer(i8* %p)
to label %if.end unwind label %lpad
lpad:
%r = landingpad { i8*, i32 }
cleanup
call void @llvm.objc.release(i8* %p)
ret void
if.end:
call void @llvm.objc.release(i8* %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 i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
; CHECK: }
define void @test5() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
entry:
%z = invoke i8* @returner()
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r13 = landingpad { i8*, i32 }
cleanup
ret void
if.end:
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
ret void
}
; Like test5, but there's intervening code.
; CHECK-LABEL: define void @test6(
; CHECK: call i8* @llvm.objc.retain(i8* %z)
; CHECK: }
define void @test6() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
entry:
%z = invoke i8* @returner()
to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
lpad:
%r13 = landingpad { i8*, i32 }
cleanup
ret void
if.end:
call void @callee()
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
ret void
}
declare i32 @__gxx_personality_v0(...)
declare i32 @__objc_personality_v0(...)
; CHECK: attributes [[NUW]] = { nounwind }
!0 = !{}
|
