1*f4a2713aSLionel Sambuc; RUN: opt -S -objc-arc-aa -basicaa -gvn < %s | FileCheck %s 2*f4a2713aSLionel Sambuc; rdar://10050579 3*f4a2713aSLionel Sambuc 4*f4a2713aSLionel Sambuc; objc_retainBlock stores into %repeater so the load from after the 5*f4a2713aSLionel Sambuc; call isn't forwardable from the store before the call. 6*f4a2713aSLionel Sambuc 7*f4a2713aSLionel Sambuc; CHECK: %tmp16 = call i8* @objc_retainBlock(i8* %tmp15) [[NUW:#[0-9]+]] 8*f4a2713aSLionel Sambuc; CHECK: %tmp17 = bitcast i8* %tmp16 to void ()* 9*f4a2713aSLionel Sambuc; CHECK: %tmp18 = load %struct.__block_byref_repeater** %byref.forwarding, align 8 10*f4a2713aSLionel Sambuc; CHECK: %repeater12 = getelementptr inbounds %struct.__block_byref_repeater* %tmp18, i64 0, i32 6 11*f4a2713aSLionel Sambuc; CHECK: store void ()* %tmp17, void ()** %repeater12, align 8 12*f4a2713aSLionel Sambuc 13*f4a2713aSLionel Sambuctarget 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" 14*f4a2713aSLionel Sambuc 15*f4a2713aSLionel Sambuc%0 = type opaque 16*f4a2713aSLionel Sambuc%struct.__block_byref_repeater = type { i8*, %struct.__block_byref_repeater*, i32, i32, i8*, i8*, void ()* } 17*f4a2713aSLionel Sambuc%struct.__block_descriptor = type { i64, i64 } 18*f4a2713aSLionel Sambuc 19*f4a2713aSLionel Sambucdefine void @foo() noreturn { 20*f4a2713aSLionel Sambucentry: 21*f4a2713aSLionel Sambuc %repeater = alloca %struct.__block_byref_repeater, align 8 22*f4a2713aSLionel Sambuc %block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>, align 8 23*f4a2713aSLionel Sambuc %byref.forwarding = getelementptr inbounds %struct.__block_byref_repeater* %repeater, i64 0, i32 1 24*f4a2713aSLionel Sambuc %tmp10 = getelementptr inbounds %struct.__block_byref_repeater* %repeater, i64 0, i32 6 25*f4a2713aSLionel Sambuc store void ()* null, void ()** %tmp10, align 8 26*f4a2713aSLionel Sambuc %block.captured11 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>* %block, i64 0, i32 6 27*f4a2713aSLionel Sambuc %tmp14 = bitcast %struct.__block_byref_repeater* %repeater to i8* 28*f4a2713aSLionel Sambuc store i8* %tmp14, i8** %block.captured11, align 8 29*f4a2713aSLionel Sambuc %tmp15 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>* %block to i8* 30*f4a2713aSLionel Sambuc %tmp16 = call i8* @objc_retainBlock(i8* %tmp15) nounwind 31*f4a2713aSLionel Sambuc %tmp17 = bitcast i8* %tmp16 to void ()* 32*f4a2713aSLionel Sambuc %tmp18 = load %struct.__block_byref_repeater** %byref.forwarding, align 8 33*f4a2713aSLionel Sambuc %repeater12 = getelementptr inbounds %struct.__block_byref_repeater* %tmp18, i64 0, i32 6 34*f4a2713aSLionel Sambuc %tmp13 = load void ()** %repeater12, align 8 35*f4a2713aSLionel Sambuc store void ()* %tmp17, void ()** %repeater12, align 8 36*f4a2713aSLionel Sambuc ret void 37*f4a2713aSLionel Sambuc} 38*f4a2713aSLionel Sambuc 39*f4a2713aSLionel Sambucdeclare i8* @objc_retainBlock(i8*) 40*f4a2713aSLionel Sambuc 41*f4a2713aSLionel Sambuc; CHECK: attributes #0 = { noreturn } 42*f4a2713aSLionel Sambuc; CHECK: attributes [[NUW]] = { nounwind } 43