declare i8* @objc_retain(i8*)
declare void @objc_release(i8*)
+declare i8* @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: define void @test0(
+; CHECK-LABEL: define void @test0(
; CHECK: invoke.cont:
-; CHECK: call void @objc_release(i8* %zipFile) nounwind, !clang.imprecise_release !0
+; CHECK: call void @objc_release(i8* %zipFile) [[NUW:#[0-9]+]], !clang.imprecise_release !0
; CHECK: ret void
; CHECK: lpad:
-; CHECK: call void @objc_release(i8* %zipFile) nounwind, !clang.imprecise_release !0
+; CHECK: call void @objc_release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: ret void
+; CHECK-NEXT: }
define void @test0(i8* %zipFile) {
entry:
call i8* @objc_retain(i8* %zipFile) nounwind
; ARCOpt should move the release before the callee calls.
-; CHECK: define void @test1(
+; CHECK-LABEL: define void @test1(
; CHECK: invoke.cont:
-; CHECK: call void @objc_release(i8* %zipFile) nounwind, !clang.imprecise_release !0
+; CHECK: call void @objc_release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
; CHECK: call void @callee()
; CHECK: br label %done
; CHECK: lpad:
-; CHECK: call void @objc_release(i8* %zipFile) nounwind, !clang.imprecise_release !0
+; CHECK: call void @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) {
entry:
call i8* @objc_retain(i8* %zipFile) nounwind
ret void
}
+; The optimizer should ignore invoke unwind paths consistently.
+; PR12265
+
+; CHECK: define void @test2() {
+; CHECK: invoke.cont:
+; CHECK-NEXT: call i8* @objc_retain
+; CHECK-NOT: @objc_r
+; CHECK: finally.cont:
+; CHECK-NEXT: call void @objc_release
+; CHECK-NOT: @objc
+; CHECK: finally.rethrow:
+; CHECK-NOT: @objc
+; CHECK: }
+define void @test2() {
+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* @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 @objc_release(i8* %call) nounwind, !clang.imprecise_release !0
+ ret void
+
+finally.rethrow: ; preds = %invoke.cont, %entry
+ %tmp2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+ 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 @objc_release(i8* %p) [[NUW]]
+; CHECK-NEXT: ret void
+; CHECK-NEXT: }
+define void @test3(i8* %p, i1 %b) {
+entry:
+ %0 = call i8* @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 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+ cleanup
+ ret void
+
+if.end:
+ call void @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 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: call void @objc_release(i8* %p) [[NUW]]
+; CHECK-NEXT: ret void
+; CHECK: if.end:
+; CHECK-NEXT: call void @objc_release(i8* %p) [[NUW]]
+; CHECK-NEXT: ret void
+; CHECK-NEXT: }
+define void @test4(i8* %p, i1 %b) {
+entry:
+ %0 = call i8* @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 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+ cleanup
+ call void @objc_release(i8* %p)
+ ret void
+
+if.end:
+ call void @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* @objc_retainAutoreleasedReturnValue(i8* %z)
+; CHECK: }
+define void @test5() {
+entry:
+ %z = invoke i8* @returner()
+ to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
+
+lpad:
+ %r13 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+ cleanup
+ ret void
+
+if.end:
+ call i8* @objc_retainAutoreleasedReturnValue(i8* %z)
+ ret void
+}
+
+; Like test5, but there's intervening code.
+
+; CHECK-LABEL: define void @test6(
+; CHECK: call i8* @objc_retain(i8* %z)
+; CHECK: }
+define void @test6() {
+entry:
+ %z = invoke i8* @returner()
+ to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
+
+lpad:
+ %r13 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
+ cleanup
+ ret void
+
+if.end:
+ call void @callee()
+ call i8* @objc_retainAutoreleasedReturnValue(i8* %z)
+ ret void
+}
+
declare i32 @__gxx_personality_v0(...)
+declare i32 @__objc_personality_v0(...)
+
+; CHECK: attributes [[NUW]] = { nounwind }
!0 = metadata !{}
projects / oota-llvm.git / blobdiff