1; RUN: opt -S -aa-pipeline=objc-arc-aa,basic-aa -passes=gvn < %s | FileCheck %s 2; rdar://10050579 3 4; objc_retainBlock stores into %repeater so the load from after the 5; call isn't forwardable from the store before the call. 6 7; CHECK: %tmp16 = call ptr @llvm.objc.retainBlock(ptr %block) [[NUW:#[0-9]+]] 8; CHECK: %tmp18 = load ptr, ptr %byref.forwarding, align 8 9; CHECK: %repeater12 = getelementptr inbounds %struct.__block_byref_repeater, ptr %tmp18, i64 0, i32 6 10; CHECK: store ptr %tmp16, ptr %repeater12, align 8 11 12target 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" 13 14%0 = type opaque 15%struct.__block_byref_repeater = type { ptr, ptr, i32, i32, ptr, ptr, ptr } 16%struct.__block_descriptor = type { i64, i64 } 17 18define void @foo() noreturn { 19entry: 20 %repeater = alloca %struct.__block_byref_repeater, align 8 21 %block = alloca <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, align 8 22 %byref.forwarding = getelementptr inbounds %struct.__block_byref_repeater, ptr %repeater, i64 0, i32 1 23 %tmp10 = getelementptr inbounds %struct.__block_byref_repeater, ptr %repeater, i64 0, i32 6 24 store ptr null, ptr %tmp10, align 8 25 %block.captured11 = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, ptr %block, i64 0, i32 6 26 store ptr %repeater, ptr %block.captured11, align 8 27 %tmp16 = call ptr @llvm.objc.retainBlock(ptr %block) nounwind 28 %tmp18 = load ptr, ptr %byref.forwarding, align 8 29 %repeater12 = getelementptr inbounds %struct.__block_byref_repeater, ptr %tmp18, i64 0, i32 6 30 %tmp13 = load ptr, ptr %repeater12, align 8 31 store ptr %tmp16, ptr %repeater12, align 8 32 ret void 33} 34 35declare ptr @llvm.objc.retainBlock(ptr) 36 37; CHECK: attributes #0 = { noreturn } 38; CHECK: attributes [[NUW]] = { nounwind } 39