blob: 2512a966ed206ec13c7403b1b9d129b38d965dd3 [file] [log] [blame]
Dan Gohman3c7d3082009-09-11 18:01:28 +00001; RUN: opt < %s -analyze -scalar-evolution -disable-output > %t
Dan Gohman8e8b5232009-06-22 00:31:57 +00002; 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}