1 ; RUN: llc -march=x86-64 -mcpu=corei7 -disable-cgp-select2branch < %s 2 3 ; We should not crash on this test. 4 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 = "i386-apple-darwin9.0.0" 7 8 @global = external constant [411 x i8], align 1 9 10 define void @snork() nounwind { 11 bb: 12 br i1 undef, label %bb26, label %bb27 13 14 bb26: ; preds = %bb48, %bb26, %bb 15 switch i32 undef, label %bb26 [ 16 i32 142771596, label %bb28 17 ] 18 19 bb27: ; preds = %bb48, %bb 20 switch i32 undef, label %bb49 [ 21 i32 142771596, label %bb28 22 ] 23 24 bb28: ; preds = %bb27, %bb26 25 %tmp = load i32, i32* null 26 %tmp29 = trunc i32 %tmp to i8 27 store i8* undef, i8** undef 28 %tmp30 = load i32, i32* null 29 %tmp31 = icmp eq i32 %tmp30, 0 30 %tmp32 = getelementptr inbounds [411 x i8], [411 x i8]* @global, i32 0, i32 undef 31 %tmp33 = load i8, i8* %tmp32, align 1 32 %tmp34 = getelementptr inbounds [411 x i8], [411 x i8]* @global, i32 0, i32 0 33 %tmp35 = load i8, i8* %tmp34, align 1 34 %tmp36 = select i1 %tmp31, i8 %tmp35, i8 %tmp33 35 %tmp37 = select i1 undef, i8 %tmp29, i8 %tmp36 36 %tmp38 = zext i8 %tmp37 to i32 37 %tmp39 = select i1 undef, i32 0, i32 %tmp38 38 %tmp40 = getelementptr inbounds i32, i32* null, i32 %tmp39 39 %tmp41 = load i32, i32* %tmp40, align 4 40 %tmp42 = load i32, i32* undef, align 4 41 %tmp43 = load i32, i32* undef 42 %tmp44 = xor i32 %tmp42, %tmp43 43 %tmp45 = lshr i32 %tmp44, 8 44 %tmp46 = lshr i32 %tmp44, 7 45 call void @spam() 46 unreachable 47 48 bb47: ; No predecessors! 49 ret void 50 51 bb48: ; No predecessors! 52 br i1 undef, label %bb27, label %bb26 53 54 bb49: ; preds = %bb49, %bb27 55 br label %bb49 56 57 bb50: ; preds = %bb50 58 br label %bb50 59 } 60 61 declare void @spam() noreturn nounwind 62
