1 ; Loop is elimianted. Save last value assignment.
2 ; RUN: opt < %s -loop-index-split -disable-output -stats |& \
3 ; RUN: grep "loop-index-split" | count 1
5 %struct.anon = type { i32 }
6 @S1 = external global i32 ; <i32*> [#uses=1]
7 @W1 = external global i32 ; <i32*> [#uses=1]
8 @Y = weak global [100 x %struct.anon] zeroinitializer, align 32 ; <[100 x %struct.anon]*> [#uses=1]
9 @ti = external global i32 ; <i32*> [#uses=1]
10 @T2 = external global [100 x [100 x i32]] ; <[100 x [100 x i32]]*> [#uses=1]
11 @d = external global i32 ; <i32*> [#uses=1]
12 @T1 = external global i32 ; <i32*> [#uses=2]
13 @N1 = external global i32 ; <i32*> [#uses=2]
17 %tmp = load i32* @S1, align 4 ; <i32> [#uses=4]
18 %tmp266 = load i32* @N1, align 4 ; <i32> [#uses=1]
19 %tmp288 = icmp ult i32 %tmp, %tmp266 ; <i1> [#uses=1]
20 br i1 %tmp288, label %bb.preheader, label %return
22 bb.preheader: ; preds = %entry
23 %tmp1 = load i32* @W1, align 4 ; <i32> [#uses=1]
24 %tmp13 = load i32* @ti, align 4 ; <i32> [#uses=1]
25 %tmp18 = load i32* @d, align 4 ; <i32> [#uses=1]
26 %tmp26 = load i32* @N1, align 4 ; <i32> [#uses=2]
27 %T1.promoted = load i32* @T1 ; <i32> [#uses=1]
28 %tmp2 = add i32 %tmp, 1 ; <i32> [#uses=2]
29 %tmp4 = icmp ugt i32 %tmp2, %tmp26 ; <i1> [#uses=1]
30 %umax = select i1 %tmp4, i32 %tmp2, i32 %tmp26 ; <i32> [#uses=1]
31 %tmp5 = sub i32 0, %tmp ; <i32> [#uses=1]
32 %tmp6 = add i32 %umax, %tmp5 ; <i32> [#uses=1]
35 bb: ; preds = %bb25, %bb.preheader
36 %indvar = phi i32 [ 0, %bb.preheader ], [ %indvar.next, %bb25 ] ; <i32> [#uses=2]
37 %T1.tmp.1 = phi i32 [ %T1.promoted, %bb.preheader ], [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=3]
38 %tj.01.0 = add i32 %indvar, %tmp ; <i32> [#uses=3]
39 %tmp24 = add i32 %tj.01.0, 1 ; <i32> [#uses=1]
40 %tmp3 = icmp eq i32 %tmp24, %tmp1 ; <i1> [#uses=1]
41 br i1 %tmp3, label %cond_true, label %bb25
43 cond_true: ; preds = %bb
44 %tmp7 = getelementptr [100 x %struct.anon]* @Y, i32 0, i32 %tj.01.0, i32 0 ; <i32*> [#uses=1]
45 %tmp8 = load i32* %tmp7, align 4 ; <i32> [#uses=1]
46 %tmp9 = icmp sgt i32 %tmp8, 0 ; <i1> [#uses=1]
47 br i1 %tmp9, label %cond_true12, label %bb25
49 cond_true12: ; preds = %cond_true
50 %tmp16 = getelementptr [100 x [100 x i32]]* @T2, i32 0, i32 %tmp13, i32 %tj.01.0 ; <i32*> [#uses=1]
51 %tmp17 = load i32* %tmp16, align 4 ; <i32> [#uses=1]
52 %tmp19 = mul i32 %tmp18, %tmp17 ; <i32> [#uses=1]
53 %tmp21 = add i32 %tmp19, %T1.tmp.1 ; <i32> [#uses=1]
56 bb25: ; preds = %cond_true12, %cond_true, %bb
57 %T1.tmp.0 = phi i32 [ %T1.tmp.1, %bb ], [ %T1.tmp.1, %cond_true ], [ %tmp21, %cond_true12 ] ; <i32> [#uses=2]
58 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2]
59 %exitcond = icmp ne i32 %indvar.next, %tmp6 ; <i1> [#uses=1]
60 br i1 %exitcond, label %bb, label %return.loopexit
62 return.loopexit: ; preds = %bb25
63 %T1.tmp.0.lcssa = phi i32 [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=1]
64 store i32 %T1.tmp.0.lcssa, i32* @T1
67 return: ; preds = %return.loopexit, %entry