43 lines
2.1 KiB
LLVM
43 lines
2.1 KiB
LLVM
; RUN: opt -S -objc-arc-aa -basicaa -gvn < %s | FileCheck %s
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; rdar://10050579
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; objc_retainBlock stores into %repeater so the load from after the
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; call isn't forwardable from the store before the call.
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; CHECK: %tmp16 = call i8* @objc_retainBlock(i8* %tmp15) [[NUW:#[0-9]+]]
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; CHECK: %tmp17 = bitcast i8* %tmp16 to void ()*
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; CHECK: %tmp18 = load %struct.__block_byref_repeater** %byref.forwarding, align 8
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; CHECK: %repeater12 = getelementptr inbounds %struct.__block_byref_repeater* %tmp18, i64 0, i32 6
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; CHECK: store void ()* %tmp17, void ()** %repeater12, align 8
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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"
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%0 = type opaque
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%struct.__block_byref_repeater = type { i8*, %struct.__block_byref_repeater*, i32, i32, i8*, i8*, void ()* }
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%struct.__block_descriptor = type { i64, i64 }
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define void @foo() noreturn {
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entry:
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%repeater = alloca %struct.__block_byref_repeater, align 8
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%block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>, align 8
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%byref.forwarding = getelementptr inbounds %struct.__block_byref_repeater* %repeater, i64 0, i32 1
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%tmp10 = getelementptr inbounds %struct.__block_byref_repeater* %repeater, i64 0, i32 6
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store void ()* null, void ()** %tmp10, align 8
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%block.captured11 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>* %block, i64 0, i32 6
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%tmp14 = bitcast %struct.__block_byref_repeater* %repeater to i8*
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store i8* %tmp14, i8** %block.captured11, align 8
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%tmp15 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0*, i8* }>* %block to i8*
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%tmp16 = call i8* @objc_retainBlock(i8* %tmp15) nounwind
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%tmp17 = bitcast i8* %tmp16 to void ()*
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%tmp18 = load %struct.__block_byref_repeater** %byref.forwarding, align 8
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%repeater12 = getelementptr inbounds %struct.__block_byref_repeater* %tmp18, i64 0, i32 6
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%tmp13 = load void ()** %repeater12, align 8
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store void ()* %tmp17, void ()** %repeater12, align 8
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ret void
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}
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declare i8* @objc_retainBlock(i8*)
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; CHECK: attributes #0 = { noreturn }
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; CHECK: attributes [[NUW]] = { nounwind }
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