1; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2 3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 4 5; CHECK: Loop %bb7.i: Unpredictable backedge-taken count. 6 7 %struct.complex = type { float, float } 8 %struct.element = type { i32, i32 } 9 %struct.node = type { %struct.node*, %struct.node*, i32 } 10@seed = external global i64 ; <i64*> [#uses=0] 11@_2E_str = external constant [18 x i8], align 1 ; <[18 x i8]*> [#uses=0] 12@_2E_str1 = external constant [4 x i8], align 1 ; <[4 x i8]*> [#uses=0] 13@value = external global float ; <float*> [#uses=0] 14@fixed = external global float ; <float*> [#uses=0] 15@floated = external global float ; <float*> [#uses=0] 16@permarray = external global [11 x i32], align 32 ; <[11 x i32]*> [#uses=0] 17@pctr = external global i32 ; <i32*> [#uses=0] 18@tree = external global %struct.node* ; <%struct.node**> [#uses=0] 19@stack = external global [4 x i32], align 16 ; <[4 x i32]*> [#uses=0] 20@cellspace = external global [19 x %struct.element], align 32 ; <[19 x %struct.element]*> [#uses=0] 21@freelist = external global i32 ; <i32*> [#uses=0] 22@movesdone = external global i32 ; <i32*> [#uses=0] 23@ima = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] 24@imb = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] 25@imr = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] 26@rma = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] 27@rmb = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] 28@rmr = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] 29@piececount = external global [4 x i32], align 16 ; <[4 x i32]*> [#uses=0] 30@class = external global [13 x i32], align 32 ; <[13 x i32]*> [#uses=0] 31@piecemax = external global [13 x i32], align 32 ; <[13 x i32]*> [#uses=0] 32@puzzl = external global [512 x i32], align 32 ; <[512 x i32]*> [#uses=0] 33@p = external global [13 x [512 x i32]], align 32 ; <[13 x [512 x i32]]*> [#uses=0] 34@n = external global i32 ; <i32*> [#uses=0] 35@kount = external global i32 ; <i32*> [#uses=0] 36@sortlist = external global [5001 x i32], align 32 ; <[5001 x i32]*> [#uses=0] 37@biggest = external global i32 ; <i32*> [#uses=0] 38@littlest = external global i32 ; <i32*> [#uses=0] 39@top = external global i32 ; <i32*> [#uses=0] 40@z = external global [257 x %struct.complex], align 32 ; <[257 x %struct.complex]*> [#uses=0] 41@w = external global [257 x %struct.complex], align 32 ; <[257 x %struct.complex]*> [#uses=0] 42@e = external global [130 x %struct.complex], align 32 ; <[130 x %struct.complex]*> [#uses=0] 43@zr = external global float ; <float*> [#uses=0] 44@zi = external global float ; <float*> [#uses=0] 45 46declare void @Initrand() nounwind 47 48declare i32 @Rand() nounwind 49 50declare void @Try(i32, i32*, i32*, i32*, i32*, i32*) nounwind 51 52declare i32 @puts(i8* nocapture) nounwind 53 54declare void @Queens(i32) nounwind 55 56declare i32 @printf(i8* nocapture, ...) nounwind 57 58declare i32 @main() nounwind 59 60declare void @Doit() nounwind 61 62declare void @Doit_bb7([15 x i32]*, [17 x i32]*, [9 x i32]*) nounwind 63 64define void @Doit_bb7_2E_i([9 x i32]* %x1, [15 x i32]* %c, [17 x i32]* %b, [9 x i32]* %a, i32* %q, i32* %x1.sub, i32* %b9, i32* %a10, i32* %c11) nounwind { 65newFuncRoot: 66 br label %bb7.i 67 68Try.exit.exitStub: ; preds = %bb7.i 69 ret void 70 71bb.i: ; preds = %bb7.i 72 %tmp = add i32 %j.0.i, 1 ; <i32> [#uses=5] 73 store i32 0, i32* %q, align 4 74 %tmp1 = sext i32 %tmp to i64 ; <i64> [#uses=1] 75 %tmp2 = getelementptr [9 x i32], [9 x i32]* %a, i64 0, i64 %tmp1 ; <i32*> [#uses=1] 76 %tmp3 = load i32, i32* %tmp2, align 4 ; <i32> [#uses=1] 77 %tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1] 78 br i1 %tmp4, label %bb.i.bb7.i.backedge_crit_edge, label %bb1.i 79 80bb1.i: ; preds = %bb.i 81 %tmp5 = add i32 %j.0.i, 2 ; <i32> [#uses=1] 82 %tmp6 = sext i32 %tmp5 to i64 ; <i64> [#uses=1] 83 %tmp7 = getelementptr [17 x i32], [17 x i32]* %b, i64 0, i64 %tmp6 ; <i32*> [#uses=1] 84 %tmp8 = load i32, i32* %tmp7, align 4 ; <i32> [#uses=1] 85 %tmp9 = icmp eq i32 %tmp8, 0 ; <i1> [#uses=1] 86 br i1 %tmp9, label %bb1.i.bb7.i.backedge_crit_edge, label %bb2.i 87 88bb2.i: ; preds = %bb1.i 89 %tmp10 = sub i32 7, %j.0.i ; <i32> [#uses=1] 90 %tmp11 = sext i32 %tmp10 to i64 ; <i64> [#uses=1] 91 %tmp12 = getelementptr [15 x i32], [15 x i32]* %c, i64 0, i64 %tmp11 ; <i32*> [#uses=1] 92 %tmp13 = load i32, i32* %tmp12, align 4 ; <i32> [#uses=1] 93 %tmp14 = icmp eq i32 %tmp13, 0 ; <i1> [#uses=1] 94 br i1 %tmp14, label %bb2.i.bb7.i.backedge_crit_edge, label %bb3.i 95 96bb3.i: ; preds = %bb2.i 97 %tmp15 = getelementptr [9 x i32], [9 x i32]* %x1, i64 0, i64 1 ; <i32*> [#uses=1] 98 store i32 %tmp, i32* %tmp15, align 4 99 %tmp16 = sext i32 %tmp to i64 ; <i64> [#uses=1] 100 %tmp17 = getelementptr [9 x i32], [9 x i32]* %a, i64 0, i64 %tmp16 ; <i32*> [#uses=1] 101 store i32 0, i32* %tmp17, align 4 102 %tmp18 = add i32 %j.0.i, 2 ; <i32> [#uses=1] 103 %tmp19 = sext i32 %tmp18 to i64 ; <i64> [#uses=1] 104 %tmp20 = getelementptr [17 x i32], [17 x i32]* %b, i64 0, i64 %tmp19 ; <i32*> [#uses=1] 105 store i32 0, i32* %tmp20, align 4 106 %tmp21 = sub i32 7, %j.0.i ; <i32> [#uses=1] 107 %tmp22 = sext i32 %tmp21 to i64 ; <i64> [#uses=1] 108 %tmp23 = getelementptr [15 x i32], [15 x i32]* %c, i64 0, i64 %tmp22 ; <i32*> [#uses=1] 109 store i32 0, i32* %tmp23, align 4 110 call void @Try(i32 2, i32* %q, i32* %b9, i32* %a10, i32* %c11, i32* %x1.sub) nounwind 111 %tmp24 = load i32, i32* %q, align 4 ; <i32> [#uses=1] 112 %tmp25 = icmp eq i32 %tmp24, 0 ; <i1> [#uses=1] 113 br i1 %tmp25, label %bb5.i, label %bb3.i.bb7.i.backedge_crit_edge 114 115bb5.i: ; preds = %bb3.i 116 %tmp26 = sext i32 %tmp to i64 ; <i64> [#uses=1] 117 %tmp27 = getelementptr [9 x i32], [9 x i32]* %a, i64 0, i64 %tmp26 ; <i32*> [#uses=1] 118 store i32 1, i32* %tmp27, align 4 119 %tmp28 = add i32 %j.0.i, 2 ; <i32> [#uses=1] 120 %tmp29 = sext i32 %tmp28 to i64 ; <i64> [#uses=1] 121 %tmp30 = getelementptr [17 x i32], [17 x i32]* %b, i64 0, i64 %tmp29 ; <i32*> [#uses=1] 122 store i32 1, i32* %tmp30, align 4 123 %tmp31 = sub i32 7, %j.0.i ; <i32> [#uses=1] 124 %tmp32 = sext i32 %tmp31 to i64 ; <i64> [#uses=1] 125 %tmp33 = getelementptr [15 x i32], [15 x i32]* %c, i64 0, i64 %tmp32 ; <i32*> [#uses=1] 126 store i32 1, i32* %tmp33, align 4 127 br label %bb7.i.backedge 128 129bb7.i.backedge: ; preds = %bb3.i.bb7.i.backedge_crit_edge, %bb2.i.bb7.i.backedge_crit_edge, %bb1.i.bb7.i.backedge_crit_edge, %bb.i.bb7.i.backedge_crit_edge, %bb5.i 130 br label %bb7.i 131 132bb7.i: ; preds = %bb7.i.backedge, %newFuncRoot 133 %j.0.i = phi i32 [ 0, %newFuncRoot ], [ %tmp, %bb7.i.backedge ] ; <i32> [#uses=8] 134 %tmp34 = load i32, i32* %q, align 4 ; <i32> [#uses=1] 135 %tmp35 = icmp eq i32 %tmp34, 0 ; <i1> [#uses=1] 136 %tmp36 = icmp ne i32 %j.0.i, 8 ; <i1> [#uses=1] 137 %tmp37 = and i1 %tmp35, %tmp36 ; <i1> [#uses=1] 138 br i1 %tmp37, label %bb.i, label %Try.exit.exitStub 139 140bb.i.bb7.i.backedge_crit_edge: ; preds = %bb.i 141 br label %bb7.i.backedge 142 143bb1.i.bb7.i.backedge_crit_edge: ; preds = %bb1.i 144 br label %bb7.i.backedge 145 146bb2.i.bb7.i.backedge_crit_edge: ; preds = %bb2.i 147 br label %bb7.i.backedge 148 149bb3.i.bb7.i.backedge_crit_edge: ; preds = %bb3.i 150 br label %bb7.i.backedge 151} 152