225 lines
6.8 KiB
LLVM
225 lines
6.8 KiB
LLVM
; RUN: opt -S -objc-arc < %s | FileCheck %s
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declare i8* @llvm.objc.retain(i8*)
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declare void @llvm.objc.release(i8*)
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declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
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declare i8* @objc_msgSend(i8*, i8*, ...)
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declare void @use_pointer(i8*)
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declare void @callee()
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declare i8* @returner()
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; ARCOpt shouldn't try to move the releases to the block containing the invoke.
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; CHECK-LABEL: define void @test0(
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; CHECK: invoke.cont:
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; CHECK: call void @llvm.objc.release(i8* %zipFile) [[NUW:#[0-9]+]], !clang.imprecise_release !0
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; CHECK: ret void
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; CHECK: lpad:
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; CHECK: call void @llvm.objc.release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
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; CHECK: ret void
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; CHECK-NEXT: }
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define void @test0(i8* %zipFile) personality i32 (...)* @__gxx_personality_v0 {
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entry:
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call i8* @llvm.objc.retain(i8* %zipFile) nounwind
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call void @use_pointer(i8* %zipFile)
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invoke void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*)*)(i8* %zipFile)
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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call void @llvm.objc.release(i8* %zipFile) nounwind, !clang.imprecise_release !0
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ret void
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lpad: ; preds = %entry
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%exn = landingpad {i8*, i32}
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cleanup
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call void @llvm.objc.release(i8* %zipFile) nounwind, !clang.imprecise_release !0
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ret void
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}
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; ARCOpt should move the release before the callee calls.
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; CHECK-LABEL: define void @test1(
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; CHECK: invoke.cont:
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; CHECK: call void @llvm.objc.release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
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; CHECK: call void @callee()
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; CHECK: br label %done
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; CHECK: lpad:
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; CHECK: call void @llvm.objc.release(i8* %zipFile) [[NUW]], !clang.imprecise_release !0
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; CHECK: call void @callee()
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; CHECK: br label %done
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; CHECK: done:
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test1(i8* %zipFile) personality i32 (...)* @__gxx_personality_v0 {
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entry:
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call i8* @llvm.objc.retain(i8* %zipFile) nounwind
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call void @use_pointer(i8* %zipFile)
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invoke void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*)*)(i8* %zipFile)
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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call void @callee()
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br label %done
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lpad: ; preds = %entry
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%exn = landingpad {i8*, i32}
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cleanup
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call void @callee()
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br label %done
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done:
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call void @llvm.objc.release(i8* %zipFile) nounwind, !clang.imprecise_release !0
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ret void
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}
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; The optimizer should ignore invoke unwind paths consistently.
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; PR12265
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; CHECK: define void @test2() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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; CHECK: invoke.cont:
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; CHECK-NEXT: call i8* @llvm.objc.retain
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; CHECK-NOT: @llvm.objc.r
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; CHECK: finally.cont:
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; CHECK-NEXT: call void @llvm.objc.release
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; CHECK-NOT: @objc
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; CHECK: finally.rethrow:
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; CHECK-NOT: @objc
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; CHECK: }
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define void @test2() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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entry:
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%call = invoke i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* ()*)()
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to label %invoke.cont unwind label %finally.rethrow, !clang.arc.no_objc_arc_exceptions !0
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invoke.cont: ; preds = %entry
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%tmp1 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call) nounwind
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call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void ()*)(), !clang.arc.no_objc_arc_exceptions !0
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invoke void @use_pointer(i8* %call)
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to label %finally.cont unwind label %finally.rethrow, !clang.arc.no_objc_arc_exceptions !0
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finally.cont: ; preds = %invoke.cont
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tail call void @llvm.objc.release(i8* %call) nounwind, !clang.imprecise_release !0
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ret void
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finally.rethrow: ; preds = %invoke.cont, %entry
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%tmp2 = landingpad { i8*, i32 }
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catch i8* null
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unreachable
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}
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; Don't try to place code on invoke critical edges.
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; CHECK-LABEL: define void @test3(
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; CHECK: if.end:
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; CHECK-NEXT: call void @llvm.objc.release(i8* %p) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test3(i8* %p, i1 %b) personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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entry:
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%0 = call i8* @llvm.objc.retain(i8* %p)
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call void @callee()
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br i1 %b, label %if.else, label %if.then
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if.then:
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invoke void @use_pointer(i8* %p)
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to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
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if.else:
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invoke void @use_pointer(i8* %p)
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to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
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lpad:
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%r = landingpad { i8*, i32 }
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cleanup
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ret void
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if.end:
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call void @llvm.objc.release(i8* %p)
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ret void
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}
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; Like test3, but with ARC-relevant exception handling.
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; CHECK-LABEL: define void @test4(
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; CHECK: lpad:
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; CHECK-NEXT: %r = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @llvm.objc.release(i8* %p) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK: if.end:
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; CHECK-NEXT: call void @llvm.objc.release(i8* %p) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test4(i8* %p, i1 %b) personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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entry:
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%0 = call i8* @llvm.objc.retain(i8* %p)
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call void @callee()
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br i1 %b, label %if.else, label %if.then
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if.then:
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invoke void @use_pointer(i8* %p)
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to label %if.end unwind label %lpad
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if.else:
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invoke void @use_pointer(i8* %p)
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to label %if.end unwind label %lpad
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lpad:
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%r = landingpad { i8*, i32 }
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cleanup
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call void @llvm.objc.release(i8* %p)
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ret void
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if.end:
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call void @llvm.objc.release(i8* %p)
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ret void
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}
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; Don't turn the retainAutoreleaseReturnValue into retain, because it's
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; for an invoke which we can assume codegen will put immediately prior.
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; CHECK-LABEL: define void @test5(
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; CHECK: call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
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; CHECK: }
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define void @test5() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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entry:
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%z = invoke i8* @returner()
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to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
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lpad:
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%r13 = landingpad { i8*, i32 }
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cleanup
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ret void
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if.end:
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call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
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ret void
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}
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; Like test5, but there's intervening code.
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; CHECK-LABEL: define void @test6(
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; CHECK: call i8* @llvm.objc.retain(i8* %z)
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; CHECK: }
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define void @test6() personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*) {
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entry:
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%z = invoke i8* @returner()
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to label %if.end unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
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lpad:
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%r13 = landingpad { i8*, i32 }
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cleanup
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ret void
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if.end:
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call void @callee()
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call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %z)
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ret void
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}
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declare i32 @__gxx_personality_v0(...)
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declare i32 @__objc_personality_v0(...)
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; CHECK: attributes [[NUW]] = { nounwind }
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!0 = !{}
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