2 ; RUN: llc < %s -march=x86-64 | FileCheck %s --check-prefix=ASM
3 ; RUN: llc -debug -o /dev/null < %s -march=x86-64 2>&1 | FileCheck %s --check-prefix=DBG
6 ; This testcase involves SCEV normalization with the exit value from
7 ; one loop involved with the increment value for an addrec on another
8 ; loop. The expression should be properly normalized and simplified,
9 ; and require only a single division.
11 ; DBG-NOT: DISCARDING (NORMALIZATION ISN'T INVERTIBLE)
15 %0 = type { %0*, %0* }
17 @0 = private constant [13 x i8] c"Result: %lu\0A\00" ; <[13 x i8]*> [#uses=1]
18 @1 = internal constant [5 x i8] c"Huh?\00" ; <[5 x i8]*> [#uses=1]
20 define i32 @main(i32 %arg, i8** nocapture %arg1) nounwind {
22 %tmp = alloca %0, align 8 ; <%0*> [#uses=11]
23 %tmp2 = bitcast %0* %tmp to i8* ; <i8*> [#uses=1]
24 call void @llvm.memset.p0i8.i64(i8* %tmp2, i8 0, i64 16, i32 8, i1 false) nounwind
25 %tmp3 = getelementptr inbounds %0* %tmp, i64 0, i32 0 ; <%0**> [#uses=3]
26 store %0* %tmp, %0** %tmp3
27 %tmp4 = getelementptr inbounds %0* %tmp, i64 0, i32 1 ; <%0**> [#uses=1]
28 store %0* %tmp, %0** %tmp4
29 %tmp5 = call noalias i8* @_Znwm(i64 24) nounwind ; <i8*> [#uses=2]
30 %tmp6 = getelementptr inbounds i8* %tmp5, i64 16 ; <i8*> [#uses=2]
31 %tmp7 = icmp eq i8* %tmp6, null ; <i1> [#uses=1]
32 br i1 %tmp7, label %bb10, label %bb8
35 %tmp9 = bitcast i8* %tmp6 to i32* ; <i32*> [#uses=1]
36 store i32 1, i32* %tmp9
39 bb10: ; preds = %bb8, %bb
40 %tmp11 = bitcast i8* %tmp5 to %0* ; <%0*> [#uses=1]
41 call void @_ZNSt15_List_node_base4hookEPS_(%0* %tmp11, %0* %tmp) nounwind
42 %tmp12 = load %0** %tmp3 ; <%0*> [#uses=3]
43 %tmp13 = icmp eq %0* %tmp12, %tmp ; <i1> [#uses=1]
44 br i1 %tmp13, label %bb14, label %bb16
47 %tmp15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @1, i64 0, i64 0))
50 bb16: ; preds = %bb16, %bb10
51 %tmp17 = phi i64 [ %tmp22, %bb16 ], [ 0, %bb10 ] ; <i64> [#uses=1]
52 %tmp18 = phi %0* [ %tmp20, %bb16 ], [ %tmp12, %bb10 ] ; <%0*> [#uses=1]
53 %tmp19 = getelementptr inbounds %0* %tmp18, i64 0, i32 0 ; <%0**> [#uses=1]
54 %tmp20 = load %0** %tmp19 ; <%0*> [#uses=2]
55 %tmp21 = icmp eq %0* %tmp20, %tmp ; <i1> [#uses=1]
56 %tmp22 = add i64 %tmp17, 1 ; <i64> [#uses=2]
57 br i1 %tmp21, label %bb23, label %bb16
60 %tmp24 = udiv i64 100, %tmp22 ; <i64> [#uses=1]
63 bb25: ; preds = %bb25, %bb23
64 %tmp26 = phi i64 [ %tmp31, %bb25 ], [ 0, %bb23 ] ; <i64> [#uses=1]
65 %tmp27 = phi %0* [ %tmp29, %bb25 ], [ %tmp12, %bb23 ] ; <%0*> [#uses=1]
66 %tmp28 = getelementptr inbounds %0* %tmp27, i64 0, i32 0 ; <%0**> [#uses=1]
67 %tmp29 = load %0** %tmp28 ; <%0*> [#uses=2]
68 %tmp30 = icmp eq %0* %tmp29, %tmp ; <i1> [#uses=1]
69 %tmp31 = add i64 %tmp26, 1 ; <i64> [#uses=2]
70 br i1 %tmp30, label %bb32, label %bb25
73 %tmp33 = mul i64 %tmp31, %tmp24 ; <i64> [#uses=1]
74 %tmp34 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @0, i64 0, i64 0), i64 %tmp33) nounwind
77 bb35: ; preds = %bb32, %bb14
78 %tmp36 = load %0** %tmp3 ; <%0*> [#uses=2]
79 %tmp37 = icmp eq %0* %tmp36, %tmp ; <i1> [#uses=1]
80 br i1 %tmp37, label %bb44, label %bb38
82 bb38: ; preds = %bb38, %bb35
83 %tmp39 = phi %0* [ %tmp41, %bb38 ], [ %tmp36, %bb35 ] ; <%0*> [#uses=2]
84 %tmp40 = getelementptr inbounds %0* %tmp39, i64 0, i32 0 ; <%0**> [#uses=1]
85 %tmp41 = load %0** %tmp40 ; <%0*> [#uses=2]
86 %tmp42 = bitcast %0* %tmp39 to i8* ; <i8*> [#uses=1]
87 call void @_ZdlPv(i8* %tmp42) nounwind
88 %tmp43 = icmp eq %0* %tmp41, %tmp ; <i1> [#uses=1]
89 br i1 %tmp43, label %bb44, label %bb38
91 bb44: ; preds = %bb38, %bb35
95 declare i32 @printf(i8* nocapture, ...) nounwind
97 declare void @_ZNSt15_List_node_base4hookEPS_(%0*, %0*)
99 declare noalias i8* @_Znwm(i64)
101 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
103 declare void @_ZdlPv(i8*) nounwind
105 declare i32 @puts(i8* nocapture) nounwind