; RUN: opt < %s -analyze -scalar-evolution \ ; RUN: | grep "Loop %bb7.i: Unpredictable backedge-taken count\." target 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" %struct.complex = type { float, float } %struct.element = type { i32, i32 } %struct.node = type { %struct.node*, %struct.node*, i32 } @seed = external global i64 ; <i64*> [#uses=0] @_2E_str = external constant [18 x i8], align 1 ; <[18 x i8]*> [#uses=0] @_2E_str1 = external constant [4 x i8], align 1 ; <[4 x i8]*> [#uses=0] @value = external global float ; <float*> [#uses=0] @fixed = external global float ; <float*> [#uses=0] @floated = external global float ; <float*> [#uses=0] @permarray = external global [11 x i32], align 32 ; <[11 x i32]*> [#uses=0] @pctr = external global i32 ; <i32*> [#uses=0] @tree = external global %struct.node* ; <%struct.node**> [#uses=0] @stack = external global [4 x i32], align 16 ; <[4 x i32]*> [#uses=0] @cellspace = external global [19 x %struct.element], align 32 ; <[19 x %struct.element]*> [#uses=0] @freelist = external global i32 ; <i32*> [#uses=0] @movesdone = external global i32 ; <i32*> [#uses=0] @ima = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] @imb = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] @imr = external global [41 x [41 x i32]], align 32 ; <[41 x [41 x i32]]*> [#uses=0] @rma = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] @rmb = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] @rmr = external global [41 x [41 x float]], align 32 ; <[41 x [41 x float]]*> [#uses=0] @piececount = external global [4 x i32], align 16 ; <[4 x i32]*> [#uses=0] @class = external global [13 x i32], align 32 ; <[13 x i32]*> [#uses=0] @piecemax = external global [13 x i32], align 32 ; <[13 x i32]*> [#uses=0] @puzzl = external global [512 x i32], align 32 ; <[512 x i32]*> [#uses=0] @p = external global [13 x [512 x i32]], align 32 ; <[13 x [512 x i32]]*> [#uses=0] @n = external global i32 ; <i32*> [#uses=0] @kount = external global i32 ; <i32*> [#uses=0] @sortlist = external global [5001 x i32], align 32 ; <[5001 x i32]*> [#uses=0] @biggest = external global i32 ; <i32*> [#uses=0] @littlest = external global i32 ; <i32*> [#uses=0] @top = external global i32 ; <i32*> [#uses=0] @z = external global [257 x %struct.complex], align 32 ; <[257 x %struct.complex]*> [#uses=0] @w = external global [257 x %struct.complex], align 32 ; <[257 x %struct.complex]*> [#uses=0] @e = external global [130 x %struct.complex], align 32 ; <[130 x %struct.complex]*> [#uses=0] @zr = external global float ; <float*> [#uses=0] @zi = external global float ; <float*> [#uses=0] declare void @Initrand() nounwind declare i32 @Rand() nounwind declare void @Try(i32, i32*, i32*, i32*, i32*, i32*) nounwind declare i32 @puts(i8* nocapture) nounwind declare void @Queens(i32) nounwind declare i32 @printf(i8* nocapture, ...) nounwind declare i32 @main() nounwind declare void @Doit() nounwind declare void @Doit_bb7([15 x i32]*, [17 x i32]*, [9 x i32]*) nounwind define 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 { newFuncRoot: br label %bb7.i Try.exit.exitStub: ; preds = %bb7.i ret void bb.i: ; preds = %bb7.i %tmp = add i32 %j.0.i, 1 ; <i32> [#uses=5] store i32 0, i32* %q, align 4 %tmp1 = sext i32 %tmp to i64 ; <i64> [#uses=1] %tmp2 = getelementptr [9 x i32]* %a, i64 0, i64 %tmp1 ; <i32*> [#uses=1] %tmp3 = load i32* %tmp2, align 4 ; <i32> [#uses=1] %tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1] br i1 %tmp4, label %bb.i.bb7.i.backedge_crit_edge, label %bb1.i bb1.i: ; preds = %bb.i %tmp5 = add i32 %j.0.i, 2 ; <i32> [#uses=1] %tmp6 = sext i32 %tmp5 to i64 ; <i64> [#uses=1] %tmp7 = getelementptr [17 x i32]* %b, i64 0, i64 %tmp6 ; <i32*> [#uses=1] %tmp8 = load i32* %tmp7, align 4 ; <i32> [#uses=1] %tmp9 = icmp eq i32 %tmp8, 0 ; <i1> [#uses=1] br i1 %tmp9, label %bb1.i.bb7.i.backedge_crit_edge, label %bb2.i bb2.i: ; preds = %bb1.i %tmp10 = sub i32 7, %j.0.i ; <i32> [#uses=1] %tmp11 = sext i32 %tmp10 to i64 ; <i64> [#uses=1] %tmp12 = getelementptr [15 x i32]* %c, i64 0, i64 %tmp11 ; <i32*> [#uses=1] %tmp13 = load i32* %tmp12, align 4 ; <i32> [#uses=1] %tmp14 = icmp eq i32 %tmp13, 0 ; <i1> [#uses=1] br i1 %tmp14, label %bb2.i.bb7.i.backedge_crit_edge, label %bb3.i bb3.i: ; preds = %bb2.i %tmp15 = getelementptr [9 x i32]* %x1, i64 0, i64 1 ; <i32*> [#uses=1] store i32 %tmp, i32* %tmp15, align 4 %tmp16 = sext i32 %tmp to i64 ; <i64> [#uses=1] %tmp17 = getelementptr [9 x i32]* %a, i64 0, i64 %tmp16 ; <i32*> [#uses=1] store i32 0, i32* %tmp17, align 4 %tmp18 = add i32 %j.0.i, 2 ; <i32> [#uses=1] %tmp19 = sext i32 %tmp18 to i64 ; <i64> [#uses=1] %tmp20 = getelementptr [17 x i32]* %b, i64 0, i64 %tmp19 ; <i32*> [#uses=1] store i32 0, i32* %tmp20, align 4 %tmp21 = sub i32 7, %j.0.i ; <i32> [#uses=1] %tmp22 = sext i32 %tmp21 to i64 ; <i64> [#uses=1] %tmp23 = getelementptr [15 x i32]* %c, i64 0, i64 %tmp22 ; <i32*> [#uses=1] store i32 0, i32* %tmp23, align 4 call void @Try(i32 2, i32* %q, i32* %b9, i32* %a10, i32* %c11, i32* %x1.sub) nounwind %tmp24 = load i32* %q, align 4 ; <i32> [#uses=1] %tmp25 = icmp eq i32 %tmp24, 0 ; <i1> [#uses=1] br i1 %tmp25, label %bb5.i, label %bb3.i.bb7.i.backedge_crit_edge bb5.i: ; preds = %bb3.i %tmp26 = sext i32 %tmp to i64 ; <i64> [#uses=1] %tmp27 = getelementptr [9 x i32]* %a, i64 0, i64 %tmp26 ; <i32*> [#uses=1] store i32 1, i32* %tmp27, align 4 %tmp28 = add i32 %j.0.i, 2 ; <i32> [#uses=1] %tmp29 = sext i32 %tmp28 to i64 ; <i64> [#uses=1] %tmp30 = getelementptr [17 x i32]* %b, i64 0, i64 %tmp29 ; <i32*> [#uses=1] store i32 1, i32* %tmp30, align 4 %tmp31 = sub i32 7, %j.0.i ; <i32> [#uses=1] %tmp32 = sext i32 %tmp31 to i64 ; <i64> [#uses=1] %tmp33 = getelementptr [15 x i32]* %c, i64 0, i64 %tmp32 ; <i32*> [#uses=1] store i32 1, i32* %tmp33, align 4 br label %bb7.i.backedge bb7.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 br label %bb7.i bb7.i: ; preds = %bb7.i.backedge, %newFuncRoot %j.0.i = phi i32 [ 0, %newFuncRoot ], [ %tmp, %bb7.i.backedge ] ; <i32> [#uses=8] %tmp34 = load i32* %q, align 4 ; <i32> [#uses=1] %tmp35 = icmp eq i32 %tmp34, 0 ; <i1> [#uses=1] %tmp36 = icmp ne i32 %j.0.i, 8 ; <i1> [#uses=1] %tmp37 = and i1 %tmp35, %tmp36 ; <i1> [#uses=1] br i1 %tmp37, label %bb.i, label %Try.exit.exitStub bb.i.bb7.i.backedge_crit_edge: ; preds = %bb.i br label %bb7.i.backedge bb1.i.bb7.i.backedge_crit_edge: ; preds = %bb1.i br label %bb7.i.backedge bb2.i.bb7.i.backedge_crit_edge: ; preds = %bb2.i br label %bb7.i.backedge bb3.i.bb7.i.backedge_crit_edge: ; preds = %bb3.i br label %bb7.i.backedge }