; RUN: opt -passes=objc-arc -S < %s | FileCheck %s ; rdar://11229925 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" %struct.__block_byref_weakLogNTimes = type { ptr, ptr, i32, i32, ptr, ptr, ptr } %struct.__block_descriptor = type { i64, i64 } ; Don't optimize away the retainBlock, because the object's address "escapes" ; with the objc_storeWeak call. ; CHECK-LABEL: define void @test0( ; CHECK: %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) [[NUW:#[0-9]+]], !clang.arc.copy_on_escape !0 ; CHECK: call void @llvm.objc.release(ptr %tmp7) [[NUW]], !clang.imprecise_release !0 ; CHECK: } define void @test0() nounwind { entry: %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8 %block = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8 store ptr null, ptr %weakLogNTimes, align 8 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 1 store ptr %weakLogNTimes, ptr %byref.forwarding, align 8 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 2 store i32 33554432, ptr %byref.flags, align 8 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 3 store i32 48, ptr %byref.size, align 4 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 4 store ptr @__Block_byref_object_copy_, ptr %tmp1, align 8 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 5 store ptr @__Block_byref_object_dispose_, ptr %tmp2, align 8 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 6 %tmp4 = call ptr @llvm.objc.initWeak(ptr %weakLogNTimes1, ptr null) nounwind %block.isa = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 0 store ptr null, ptr %block.isa, align 8 %block.flags = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 1 store i32 1107296256, ptr %block.flags, align 8 %block.reserved = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 2 store i32 0, ptr %block.reserved, align 4 %block.invoke = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 3 store ptr @__main_block_invoke_0, ptr %block.invoke, align 8 %block.descriptor = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 4 store ptr null, ptr %block.descriptor, align 8 %block.captured = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 5 store ptr %weakLogNTimes, ptr %block.captured, align 8 %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) nounwind, !clang.arc.copy_on_escape !0 %tmp8 = load ptr, ptr %byref.forwarding, align 8 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %tmp8, i64 0, i32 6 %tmp10 = call ptr @llvm.objc.storeWeak(ptr %weakLogNTimes3, ptr %tmp7) nounwind %tmp11 = getelementptr inbounds i8, ptr %tmp7, i64 16 %tmp13 = load ptr, ptr %tmp11, align 8 call void %tmp13(ptr %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0 call void @llvm.objc.release(ptr %tmp7) nounwind, !clang.imprecise_release !0 call void @_Block_object_dispose(ptr %weakLogNTimes, i32 8) nounwind call void @llvm.objc.destroyWeak(ptr %weakLogNTimes1) nounwind ret void } ; Like test0, but it makes a regular call instead of a storeWeak call, ; so the optimization is valid. ; CHECK-LABEL: define void @test1( ; CHECK-NOT: @llvm.objc.retainBlock ; CHECK: } define void @test1() nounwind { entry: %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8 %block = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8 store ptr null, ptr %weakLogNTimes, align 8 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 1 store ptr %weakLogNTimes, ptr %byref.forwarding, align 8 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 2 store i32 33554432, ptr %byref.flags, align 8 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 3 store i32 48, ptr %byref.size, align 4 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 4 store ptr @__Block_byref_object_copy_, ptr %tmp1, align 8 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 5 store ptr @__Block_byref_object_dispose_, ptr %tmp2, align 8 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 6 %tmp4 = call ptr @llvm.objc.initWeak(ptr %weakLogNTimes1, ptr null) nounwind %block.isa = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 0 store ptr null, ptr %block.isa, align 8 %block.flags = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 1 store i32 1107296256, ptr %block.flags, align 8 %block.reserved = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 2 store i32 0, ptr %block.reserved, align 4 %block.invoke = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 3 store ptr @__main_block_invoke_0, ptr %block.invoke, align 8 %block.descriptor = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 4 store ptr null, ptr %block.descriptor, align 8 %block.captured = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 5 store ptr %weakLogNTimes, ptr %block.captured, align 8 %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) nounwind, !clang.arc.copy_on_escape !0 %tmp8 = load ptr, ptr %byref.forwarding, align 8 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %tmp8, i64 0, i32 6 %tmp10 = call ptr @not_really_objc_storeWeak(ptr %weakLogNTimes3, ptr %tmp7) nounwind %tmp11 = getelementptr inbounds i8, ptr %tmp7, i64 16 %tmp13 = load ptr, ptr %tmp11, align 8 call void %tmp13(ptr %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0 call void @llvm.objc.release(ptr %tmp7) nounwind, !clang.imprecise_release !0 call void @_Block_object_dispose(ptr %weakLogNTimes, i32 8) nounwind call void @llvm.objc.destroyWeak(ptr %weakLogNTimes1) nounwind ret void } declare void @__Block_byref_object_copy_(ptr, ptr) nounwind declare void @__Block_byref_object_dispose_(ptr) nounwind declare void @llvm.objc.destroyWeak(ptr) declare ptr @llvm.objc.initWeak(ptr, ptr) declare void @__main_block_invoke_0(ptr nocapture, i32) nounwind ssp declare void @_Block_object_dispose(ptr, i32) declare ptr @llvm.objc.retainBlock(ptr) declare ptr @llvm.objc.storeWeak(ptr, ptr) declare ptr @not_really_objc_storeWeak(ptr, ptr) declare void @llvm.objc.release(ptr) !0 = !{} ; CHECK: attributes [[NUW]] = { nounwind } ; CHECK: attributes #1 = { nounwind ssp }