1 ; RUN: llc < %s -march=x86-64 | FileCheck %s 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 ; CHECK: div 10 ; CHECK-NOT: div 11 12 %0 = type { %0*, %0* } 13 14 @0 = private constant [13 x i8] c"Result: %lu\0A\00" ; <[13 x i8]*> [#uses=1] 15 @1 = internal constant [5 x i8] c"Huh?\00" ; <[5 x i8]*> [#uses=1] 16 17 define i32 @main(i32 %arg, i8** nocapture %arg1) nounwind { 18 bb: 19 %tmp = alloca %0, align 8 ; <%0*> [#uses=11] 20 %tmp2 = bitcast %0* %tmp to i8* ; <i8*> [#uses=1] 21 call void @llvm.memset.p0i8.i64(i8* %tmp2, i8 0, i64 16, i32 8, i1 false) nounwind 22 %tmp3 = getelementptr inbounds %0* %tmp, i64 0, i32 0 ; <%0**> [#uses=3] 23 store %0* %tmp, %0** %tmp3 24 %tmp4 = getelementptr inbounds %0* %tmp, i64 0, i32 1 ; <%0**> [#uses=1] 25 store %0* %tmp, %0** %tmp4 26 %tmp5 = call noalias i8* @_Znwm(i64 24) nounwind ; <i8*> [#uses=2] 27 %tmp6 = getelementptr inbounds i8* %tmp5, i64 16 ; <i8*> [#uses=2] 28 %tmp7 = icmp eq i8* %tmp6, null ; <i1> [#uses=1] 29 br i1 %tmp7, label %bb10, label %bb8 30 31 bb8: ; preds = %bb 32 %tmp9 = bitcast i8* %tmp6 to i32* ; <i32*> [#uses=1] 33 store i32 1, i32* %tmp9 34 br label %bb10 35 36 bb10: ; preds = %bb8, %bb 37 %tmp11 = bitcast i8* %tmp5 to %0* ; <%0*> [#uses=1] 38 call void @_ZNSt15_List_node_base4hookEPS_(%0* %tmp11, %0* %tmp) nounwind 39 %tmp12 = load %0** %tmp3 ; <%0*> [#uses=3] 40 %tmp13 = icmp eq %0* %tmp12, %tmp ; <i1> [#uses=1] 41 br i1 %tmp13, label %bb14, label %bb16 42 43 bb14: ; preds = %bb10 44 %tmp15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @1, i64 0, i64 0)) 45 br label %bb35 46 47 bb16: ; preds = %bb16, %bb10 48 %tmp17 = phi i64 [ %tmp22, %bb16 ], [ 0, %bb10 ] ; <i64> [#uses=1] 49 %tmp18 = phi %0* [ %tmp20, %bb16 ], [ %tmp12, %bb10 ] ; <%0*> [#uses=1] 50 %tmp19 = getelementptr inbounds %0* %tmp18, i64 0, i32 0 ; <%0**> [#uses=1] 51 %tmp20 = load %0** %tmp19 ; <%0*> [#uses=2] 52 %tmp21 = icmp eq %0* %tmp20, %tmp ; <i1> [#uses=1] 53 %tmp22 = add i64 %tmp17, 1 ; <i64> [#uses=2] 54 br i1 %tmp21, label %bb23, label %bb16 55 56 bb23: ; preds = %bb16 57 %tmp24 = udiv i64 100, %tmp22 ; <i64> [#uses=1] 58 br label %bb25 59 60 bb25: ; preds = %bb25, %bb23 61 %tmp26 = phi i64 [ %tmp31, %bb25 ], [ 0, %bb23 ] ; <i64> [#uses=1] 62 %tmp27 = phi %0* [ %tmp29, %bb25 ], [ %tmp12, %bb23 ] ; <%0*> [#uses=1] 63 %tmp28 = getelementptr inbounds %0* %tmp27, i64 0, i32 0 ; <%0**> [#uses=1] 64 %tmp29 = load %0** %tmp28 ; <%0*> [#uses=2] 65 %tmp30 = icmp eq %0* %tmp29, %tmp ; <i1> [#uses=1] 66 %tmp31 = add i64 %tmp26, 1 ; <i64> [#uses=2] 67 br i1 %tmp30, label %bb32, label %bb25 68 69 bb32: ; preds = %bb25 70 %tmp33 = mul i64 %tmp31, %tmp24 ; <i64> [#uses=1] 71 %tmp34 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @0, i64 0, i64 0), i64 %tmp33) nounwind 72 br label %bb35 73 74 bb35: ; preds = %bb32, %bb14 75 %tmp36 = load %0** %tmp3 ; <%0*> [#uses=2] 76 %tmp37 = icmp eq %0* %tmp36, %tmp ; <i1> [#uses=1] 77 br i1 %tmp37, label %bb44, label %bb38 78 79 bb38: ; preds = %bb38, %bb35 80 %tmp39 = phi %0* [ %tmp41, %bb38 ], [ %tmp36, %bb35 ] ; <%0*> [#uses=2] 81 %tmp40 = getelementptr inbounds %0* %tmp39, i64 0, i32 0 ; <%0**> [#uses=1] 82 %tmp41 = load %0** %tmp40 ; <%0*> [#uses=2] 83 %tmp42 = bitcast %0* %tmp39 to i8* ; <i8*> [#uses=1] 84 call void @_ZdlPv(i8* %tmp42) nounwind 85 %tmp43 = icmp eq %0* %tmp41, %tmp ; <i1> [#uses=1] 86 br i1 %tmp43, label %bb44, label %bb38 87 88 bb44: ; preds = %bb38, %bb35 89 ret i32 0 90 } 91 92 declare i32 @printf(i8* nocapture, ...) nounwind 93 94 declare void @_ZNSt15_List_node_base4hookEPS_(%0*, %0*) 95 96 declare noalias i8* @_Znwm(i64) 97 98 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind 99 100 declare void @_ZdlPv(i8*) nounwind 101 102 declare i32 @puts(i8* nocapture) nounwind 103
