| ; RUN: opt -objc-arc -S < %s | FileCheck %s |
| |
| %struct.__objcFastEnumerationState = type { i64, i8**, i64*, [5 x i64] } |
| |
| @"\01L_OBJC_METH_VAR_NAME_" = internal global [43 x i8] c"countByEnumeratingWithState:objects:count:\00", section "__TEXT,__objc_methname,cstring_literals", align 1 |
| @"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([43 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i64 0, i64 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @g = common global i8* null, align 8 |
| @"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip" |
| |
| declare void @callee() |
| declare i8* @returner() |
| declare i8* @objc_retainAutoreleasedReturnValue(i8*) |
| declare i8* @objc_retain(i8*) |
| declare void @objc_enumerationMutation(i8*) |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind |
| declare i8* @objc_msgSend(i8*, i8*, ...) nonlazybind |
| declare void @use(i8*) |
| declare void @objc_release(i8*) |
| |
| !0 = metadata !{} |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test0( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test0(i8* %a) nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %0 = call i8* @objc_retain(i8* %a) nounwind |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call, %forcoll.loopinit ], [ %call6, %forcoll.refetch ] |
| %tmp7 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp7, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr3 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr3, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp5 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call6 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp5, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call6, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test2( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test2() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call3, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp8 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr4 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr4, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call7, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test4( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test4() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %tmp = load i8** @g, align 8 |
| %0 = call i8* @objc_retain(i8* %tmp) nounwind |
| %tmp2 = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp2, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp4 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp4, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call, %forcoll.loopinit ], [ %call8, %forcoll.refetch ] |
| %tmp9 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr5 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr5, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp7 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call8 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp7, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call8, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test5( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test5() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| call void @callee() |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call3, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp8 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr4 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr4, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call7, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test6( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test6() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call3, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp8 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr4 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr4, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call7, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @callee() |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test7( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test7() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| call void @callee() |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call3, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp8 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ] |
| %mutationsptr4 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr4, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| call void @use(i8* %3) |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call7, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @callee() |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test8( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test8() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %1 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call3, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp8 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.next ] |
| %mutationsptr4 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr4, align 8 |
| %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %2, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %1) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %stateitems = load i8*** %stateitems.ptr, align 8 |
| %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index |
| %3 = load i8** %currentitem.ptr, align 8 |
| %tobool = icmp eq i8* %3, null |
| br i1 %tobool, label %forcoll.next, label %if.then |
| |
| if.then: |
| call void @callee() |
| br label %forcoll.next |
| |
| forcoll.next: |
| %4 = add i64 %forcoll.index, 1 |
| %exitcond = icmp eq i64 %4, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %5 = icmp eq i64 %call7, 0 |
| br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %1) nounwind |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test9( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test9() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| %call1 = call i8* @returner() |
| %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %2 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call4, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp9 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated.forcoll.loopbody_crit_edge ], [ 1, %forcoll.loopbody.outer ] |
| %mutationsptr5 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr5, align 8 |
| %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %3, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %2) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %exitcond = icmp eq i64 %forcoll.index, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.notmutated.forcoll.loopbody_crit_edge |
| |
| forcoll.notmutated.forcoll.loopbody_crit_edge: |
| %phitmp = add i64 %forcoll.index, 1 |
| br label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %4 = icmp eq i64 %call7, 0 |
| br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %2) nounwind |
| call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0 |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a nested retain+release pair. |
| |
| ; CHECK: define void @test10( |
| ; CHECK: call i8* @objc_retain |
| ; CHECK: call i8* @objc_retain |
| ; CHECK-NOT: @objc_retain |
| ; CHECK: } |
| define void @test10() nounwind { |
| entry: |
| %state.ptr = alloca %struct.__objcFastEnumerationState, align 8 |
| %items.ptr = alloca [16 x i8*], align 8 |
| %call = call i8* @returner() |
| %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind |
| %call1 = call i8* @returner() |
| %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind |
| call void @callee() |
| %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8* |
| call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false) |
| %2 = call i8* @objc_retain(i8* %0) nounwind |
| %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %iszero = icmp eq i64 %call4, 0 |
| br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit |
| |
| forcoll.loopinit: |
| %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2 |
| %mutationsptr = load i64** %mutationsptr.ptr, align 8 |
| %forcoll.initial-mutations = load i64* %mutationsptr, align 8 |
| br label %forcoll.loopbody.outer |
| |
| forcoll.loopbody.outer: |
| %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ] |
| %tmp9 = icmp ugt i64 %forcoll.count.ph, 1 |
| %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1 |
| br label %forcoll.loopbody |
| |
| forcoll.loopbody: |
| %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated.forcoll.loopbody_crit_edge ], [ 1, %forcoll.loopbody.outer ] |
| %mutationsptr5 = load i64** %mutationsptr.ptr, align 8 |
| %statemutations = load i64* %mutationsptr5, align 8 |
| %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations |
| br i1 %3, label %forcoll.notmutated, label %forcoll.mutated |
| |
| forcoll.mutated: |
| call void @objc_enumerationMutation(i8* %2) |
| br label %forcoll.notmutated |
| |
| forcoll.notmutated: |
| %exitcond = icmp eq i64 %forcoll.index, %umax |
| br i1 %exitcond, label %forcoll.refetch, label %forcoll.notmutated.forcoll.loopbody_crit_edge |
| |
| forcoll.notmutated.forcoll.loopbody_crit_edge: |
| %phitmp = add i64 %forcoll.index, 1 |
| br label %forcoll.loopbody |
| |
| forcoll.refetch: |
| %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16) |
| %4 = icmp eq i64 %call7, 0 |
| br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer |
| |
| forcoll.empty: |
| call void @objc_release(i8* %2) nounwind |
| call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0 |
| call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
