1; RUN: opt < %s -analyze -scalar-evolution > %t
2; RUN: grep sext %t | count 2
3; RUN: not grep "(sext" %t
4
5; ScalarEvolution should be able to compute a maximum trip count
6; value sufficient to fold away both sext casts.
7
8target 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"
9
10define float @t(float* %pTmp1, float* %peakWeight, float* %nrgReducePeakrate, i32 %bim) nounwind {
11entry:
12	%tmp3 = load float* %peakWeight, align 4		; <float> [#uses=2]
13	%tmp2538 = icmp sgt i32 %bim, 0		; <i1> [#uses=1]
14	br i1 %tmp2538, label %bb.nph, label %bb4
15
16bb.nph:		; preds = %entry
17	br label %bb
18
19bb:		; preds = %bb1, %bb.nph
20	%distERBhi.036 = phi float [ %tmp10, %bb1 ], [ 0.000000e+00, %bb.nph ]		; <float> [#uses=1]
21	%hiPart.035 = phi i32 [ %tmp12, %bb1 ], [ 0, %bb.nph ]		; <i32> [#uses=2]
22	%peakCount.034 = phi float [ %tmp19, %bb1 ], [ %tmp3, %bb.nph ]		; <float> [#uses=1]
23	%tmp6 = sext i32 %hiPart.035 to i64		; <i64> [#uses=1]
24	%tmp7 = getelementptr float* %pTmp1, i64 %tmp6		; <float*> [#uses=1]
25	%tmp8 = load float* %tmp7, align 4		; <float> [#uses=1]
26	%tmp10 = fadd float %tmp8, %distERBhi.036		; <float> [#uses=3]
27	%tmp12 = add i32 %hiPart.035, 1		; <i32> [#uses=3]
28	%tmp15 = sext i32 %tmp12 to i64		; <i64> [#uses=1]
29	%tmp16 = getelementptr float* %peakWeight, i64 %tmp15		; <float*> [#uses=1]
30	%tmp17 = load float* %tmp16, align 4		; <float> [#uses=1]
31	%tmp19 = fadd float %tmp17, %peakCount.034		; <float> [#uses=2]
32	br label %bb1
33
34bb1:		; preds = %bb
35	%tmp21 = fcmp olt float %tmp10, 2.500000e+00		; <i1> [#uses=1]
36	%tmp25 = icmp slt i32 %tmp12, %bim		; <i1> [#uses=1]
37	%tmp27 = and i1 %tmp21, %tmp25		; <i1> [#uses=1]
38	br i1 %tmp27, label %bb, label %bb1.bb4_crit_edge
39
40bb1.bb4_crit_edge:		; preds = %bb1
41	br label %bb4
42
43bb4:		; preds = %bb1.bb4_crit_edge, %entry
44	%distERBhi.0.lcssa = phi float [ %tmp10, %bb1.bb4_crit_edge ], [ 0.000000e+00, %entry ]		; <float> [#uses=1]
45	%peakCount.0.lcssa = phi float [ %tmp19, %bb1.bb4_crit_edge ], [ %tmp3, %entry ]		; <float> [#uses=1]
46	%tmp31 = fdiv float %peakCount.0.lcssa, %distERBhi.0.lcssa		; <float> [#uses=1]
47	ret float %tmp31
48}
49