1 ; RUN: llc -mcpu=corei7 -disable-cgp-select2branch < %s
3 ; We should not crash on this test.
5 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
6 target triple = "x86_64-apple-darwin9.0.0"
8 @global = external constant [411 x i8], align 1
10 define void @snork() nounwind {
12 br i1 undef, label %bb26, label %bb27
14 bb26: ; preds = %bb48, %bb26, %bb
15 switch i32 undef, label %bb26 [
16 i32 142771596, label %bb28
19 bb27: ; preds = %bb48, %bb
20 switch i32 undef, label %bb49 [
21 i32 142771596, label %bb28
24 bb28: ; preds = %bb27, %bb26
25 %tmp = load i32, ptr null
26 %tmp29 = trunc i32 %tmp to i8
27 store ptr undef, ptr undef
28 %tmp30 = load i32, ptr null
29 %tmp31 = icmp eq i32 %tmp30, 0
30 %tmp32 = getelementptr inbounds [411 x i8], ptr @global, i32 0, i32 undef
31 %tmp33 = load i8, ptr %tmp32, align 1
32 %tmp35 = load i8, ptr @global, align 1
33 %tmp36 = select i1 %tmp31, i8 %tmp35, i8 %tmp33
34 %tmp37 = select i1 undef, i8 %tmp29, i8 %tmp36
35 %tmp38 = zext i8 %tmp37 to i32
36 %tmp39 = select i1 undef, i32 0, i32 %tmp38
37 %tmp40 = getelementptr inbounds i32, ptr null, i32 %tmp39
38 %tmp41 = load i32, ptr %tmp40, align 4
39 %tmp42 = load i32, ptr undef, align 4
40 %tmp43 = load i32, ptr undef
41 %tmp44 = xor i32 %tmp42, %tmp43
42 %tmp45 = lshr i32 %tmp44, 8
43 %tmp46 = lshr i32 %tmp44, 7
47 bb47: ; No predecessors!
50 bb48: ; No predecessors!
51 br i1 undef, label %bb27, label %bb26
53 bb49: ; preds = %bb49, %bb27
60 declare void @spam() noreturn nounwind