1; RUN: llc < %s -mtriple=thumbv7-apple-ios5.0.0 | FileCheck %s
2; rdar://10464621
3
4; DAG combine increases loads from packed types. ARM load / store optimizer then
5; combined them into a ldm which causes runtime exception.
6
7%struct.InformationBlock = type <{ i32, %struct.FlagBits, %struct.FlagBits }>
8%struct.FlagBits = type <{ [4 x i32] }>
9
10@infoBlock = external global %struct.InformationBlock
11
12define hidden void @foo() {
13; CHECK-LABEL: foo:
14; CHECK: ldr.w
15; CHECK: ldr.w
16; CHECK-NOT: ldm
17entry:
18  %tmp13 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 1, i32 0, i32 0), align 1
19  %tmp15 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 1, i32 0, i32 1), align 1
20  %tmp17 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 1, i32 0, i32 2), align 1
21  %tmp19 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 1, i32 0, i32 3), align 1
22  %tmp = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 2, i32 0, i32 0), align 1
23  %tmp3 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 2, i32 0, i32 1), align 1
24  %tmp4 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 2, i32 0, i32 2), align 1
25  %tmp5 = load i32, i32* getelementptr inbounds (%struct.InformationBlock, %struct.InformationBlock* @infoBlock, i32 0, i32 2, i32 0, i32 3), align 1
26  %insert21 = insertvalue [4 x i32] undef, i32 %tmp13, 0
27  %insert23 = insertvalue [4 x i32] %insert21, i32 %tmp15, 1
28  %insert25 = insertvalue [4 x i32] %insert23, i32 %tmp17, 2
29  %insert27 = insertvalue [4 x i32] %insert25, i32 %tmp19, 3
30  %insert = insertvalue [4 x i32] undef, i32 %tmp, 0
31  %insert7 = insertvalue [4 x i32] %insert, i32 %tmp3, 1
32  %insert9 = insertvalue [4 x i32] %insert7, i32 %tmp4, 2
33  %insert11 = insertvalue [4 x i32] %insert9, i32 %tmp5, 3
34  tail call void @bar([4 x i32] %insert27, [4 x i32] %insert11)
35  ret void
36}
37
38declare void @bar([4 x i32], [4 x i32])
39