| Dan Gohman | fc3678a | 2010-07-20 17:06:20 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86-64 | grep div | count 1 |
| 2 | ; rdar://8168938 |
| 3 | |
| 4 | ; This testcase involves SCEV normalization with the exit value from |
| 5 | ; one loop involved with the increment value for an addrec on another |
| 6 | ; loop. The expression should be properly normalized and simplified, |
| 7 | ; and require only a single division. |
| 8 | |
| 9 | %0 = type { %0*, %0* } |
| 10 | |
| 11 | @0 = private constant [13 x i8] c"Result: %lu\0A\00" ; <[13 x i8]*> [#uses=1] |
| 12 | @1 = internal constant [5 x i8] c"Huh?\00" ; <[5 x i8]*> [#uses=1] |
| 13 | |
| 14 | define i32 @main(i32 %arg, i8** nocapture %arg1) nounwind { |
| 15 | bb: |
| 16 | %tmp = alloca %0, align 8 ; <%0*> [#uses=11] |
| 17 | %tmp2 = bitcast %0* %tmp to i8* ; <i8*> [#uses=1] |
| 18 | call void @llvm.memset.p0i8.i64(i8* %tmp2, i8 0, i64 16, i32 8, i1 false) nounwind |
| 19 | %tmp3 = getelementptr inbounds %0* %tmp, i64 0, i32 0 ; <%0**> [#uses=3] |
| 20 | store %0* %tmp, %0** %tmp3 |
| 21 | %tmp4 = getelementptr inbounds %0* %tmp, i64 0, i32 1 ; <%0**> [#uses=1] |
| 22 | store %0* %tmp, %0** %tmp4 |
| 23 | %tmp5 = call noalias i8* @_Znwm(i64 24) nounwind ; <i8*> [#uses=2] |
| 24 | %tmp6 = getelementptr inbounds i8* %tmp5, i64 16 ; <i8*> [#uses=2] |
| 25 | %tmp7 = icmp eq i8* %tmp6, null ; <i1> [#uses=1] |
| 26 | br i1 %tmp7, label %bb10, label %bb8 |
| 27 | |
| 28 | bb8: ; preds = %bb |
| 29 | %tmp9 = bitcast i8* %tmp6 to i32* ; <i32*> [#uses=1] |
| 30 | store i32 1, i32* %tmp9 |
| 31 | br label %bb10 |
| 32 | |
| 33 | bb10: ; preds = %bb8, %bb |
| 34 | %tmp11 = bitcast i8* %tmp5 to %0* ; <%0*> [#uses=1] |
| 35 | call void @_ZNSt15_List_node_base4hookEPS_(%0* %tmp11, %0* %tmp) nounwind |
| 36 | %tmp12 = load %0** %tmp3 ; <%0*> [#uses=3] |
| 37 | %tmp13 = icmp eq %0* %tmp12, %tmp ; <i1> [#uses=1] |
| 38 | br i1 %tmp13, label %bb14, label %bb16 |
| 39 | |
| 40 | bb14: ; preds = %bb10 |
| 41 | %tmp15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @1, i64 0, i64 0)) |
| 42 | br label %bb35 |
| 43 | |
| 44 | bb16: ; preds = %bb16, %bb10 |
| 45 | %tmp17 = phi i64 [ %tmp22, %bb16 ], [ 0, %bb10 ] ; <i64> [#uses=1] |
| 46 | %tmp18 = phi %0* [ %tmp20, %bb16 ], [ %tmp12, %bb10 ] ; <%0*> [#uses=1] |
| 47 | %tmp19 = getelementptr inbounds %0* %tmp18, i64 0, i32 0 ; <%0**> [#uses=1] |
| 48 | %tmp20 = load %0** %tmp19 ; <%0*> [#uses=2] |
| 49 | %tmp21 = icmp eq %0* %tmp20, %tmp ; <i1> [#uses=1] |
| 50 | %tmp22 = add i64 %tmp17, 1 ; <i64> [#uses=2] |
| 51 | br i1 %tmp21, label %bb23, label %bb16 |
| 52 | |
| 53 | bb23: ; preds = %bb16 |
| 54 | %tmp24 = udiv i64 100, %tmp22 ; <i64> [#uses=1] |
| 55 | br label %bb25 |
| 56 | |
| 57 | bb25: ; preds = %bb25, %bb23 |
| 58 | %tmp26 = phi i64 [ %tmp31, %bb25 ], [ 0, %bb23 ] ; <i64> [#uses=1] |
| 59 | %tmp27 = phi %0* [ %tmp29, %bb25 ], [ %tmp12, %bb23 ] ; <%0*> [#uses=1] |
| 60 | %tmp28 = getelementptr inbounds %0* %tmp27, i64 0, i32 0 ; <%0**> [#uses=1] |
| 61 | %tmp29 = load %0** %tmp28 ; <%0*> [#uses=2] |
| 62 | %tmp30 = icmp eq %0* %tmp29, %tmp ; <i1> [#uses=1] |
| 63 | %tmp31 = add i64 %tmp26, 1 ; <i64> [#uses=2] |
| 64 | br i1 %tmp30, label %bb32, label %bb25 |
| 65 | |
| 66 | bb32: ; preds = %bb25 |
| 67 | %tmp33 = mul i64 %tmp31, %tmp24 ; <i64> [#uses=1] |
| 68 | %tmp34 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @0, i64 0, i64 0), i64 %tmp33) nounwind |
| 69 | br label %bb35 |
| 70 | |
| 71 | bb35: ; preds = %bb32, %bb14 |
| 72 | %tmp36 = load %0** %tmp3 ; <%0*> [#uses=2] |
| 73 | %tmp37 = icmp eq %0* %tmp36, %tmp ; <i1> [#uses=1] |
| 74 | br i1 %tmp37, label %bb44, label %bb38 |
| 75 | |
| 76 | bb38: ; preds = %bb38, %bb35 |
| 77 | %tmp39 = phi %0* [ %tmp41, %bb38 ], [ %tmp36, %bb35 ] ; <%0*> [#uses=2] |
| 78 | %tmp40 = getelementptr inbounds %0* %tmp39, i64 0, i32 0 ; <%0**> [#uses=1] |
| 79 | %tmp41 = load %0** %tmp40 ; <%0*> [#uses=2] |
| 80 | %tmp42 = bitcast %0* %tmp39 to i8* ; <i8*> [#uses=1] |
| 81 | call void @_ZdlPv(i8* %tmp42) nounwind |
| 82 | %tmp43 = icmp eq %0* %tmp41, %tmp ; <i1> [#uses=1] |
| 83 | br i1 %tmp43, label %bb44, label %bb38 |
| 84 | |
| 85 | bb44: ; preds = %bb38, %bb35 |
| 86 | ret i32 0 |
| 87 | } |
| 88 | |
| 89 | declare i32 @printf(i8* nocapture, ...) nounwind |
| 90 | |
| 91 | declare void @_ZNSt15_List_node_base4hookEPS_(%0*, %0*) |
| 92 | |
| 93 | declare noalias i8* @_Znwm(i64) |
| 94 | |
| 95 | declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind |
| 96 | |
| 97 | declare void @_ZdlPv(i8*) nounwind |
| 98 | |
| 99 | declare i32 @puts(i8* nocapture) nounwind |