source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/ScalarEvolution/sext-iv-2.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

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1; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
2
3; CHECK: %tmp3 = sext i8 %tmp2 to i32
4; CHECK: -->  (sext i8 {0,+,1}<%bb1> to i32){{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: -1
5; CHECK: %tmp4 = mul i32 %tmp3, %i.02
6; CHECK: -->  ((sext i8 {0,+,1}<%bb1> to i32) * {0,+,1}<%bb>){{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: {0,+,-1}<%bb>
7
8; These sexts are not foldable.
9
10target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64"
11
12@table = common global [32 x [256 x i32]] zeroinitializer, align 32             ; <[32 x [256 x i32]]*> [#uses=2]
13
14define i32 @main() nounwind {
15entry:
16        br i1 false, label %bb5, label %bb.nph3
17
18bb.nph3:                ; preds = %entry
19        br label %bb
20
21bb:             ; preds = %bb4, %bb.nph3
22        %i.02 = phi i32 [ %tmp10, %bb4 ], [ 0, %bb.nph3 ]               ; <i32> [#uses=3]
23        br i1 false, label %bb3, label %bb.nph
24
25bb.nph:         ; preds = %bb
26        br label %bb1
27
28bb1:            ; preds = %bb2, %bb.nph
29        %j.01 = phi i32 [ %tmp8, %bb2 ], [ 0, %bb.nph ]         ; <i32> [#uses=3]
30        %tmp2 = trunc i32 %j.01 to i8           ; <i8> [#uses=1]
31        %tmp3 = sext i8 %tmp2 to i32            ; <i32> [#uses=1]
32        %tmp4 = mul i32 %tmp3, %i.02            ; <i32> [#uses=1]
33        %tmp5 = sext i32 %i.02 to i64           ; <i64> [#uses=1]
34        %tmp6 = sext i32 %j.01 to i64           ; <i64> [#uses=1]
35        %tmp7 = getelementptr [32 x [256 x i32]], [32 x [256 x i32]]* @table, i64 0, i64 %tmp5, i64 %tmp6               ; <i32*> [#uses=1]
36        store i32 %tmp4, i32* %tmp7, align 4
37        %tmp8 = add i32 %j.01, 1                ; <i32> [#uses=2]
38        br label %bb2
39
40bb2:            ; preds = %bb1
41        %phitmp1 = icmp sgt i32 %tmp8, 255              ; <i1> [#uses=1]
42        br i1 %phitmp1, label %bb2.bb3_crit_edge, label %bb1
43
44bb2.bb3_crit_edge:              ; preds = %bb2
45        br label %bb3
46
47bb3:            ; preds = %bb2.bb3_crit_edge, %bb
48        %tmp10 = add i32 %i.02, 1               ; <i32> [#uses=2]
49        br label %bb4
50
51bb4:            ; preds = %bb3
52        %phitmp = icmp sgt i32 %tmp10, 31               ; <i1> [#uses=1]
53        br i1 %phitmp, label %bb4.bb5_crit_edge, label %bb
54
55bb4.bb5_crit_edge:              ; preds = %bb4
56        br label %bb5
57
58bb5:            ; preds = %bb4.bb5_crit_edge, %entry
59        %tmp12 = load i32, i32* getelementptr ([32 x [256 x i32]], [32 x [256 x i32]]* @table, i64 0, i64 9, i64 132), align 16         ; <i32> [#uses=1]
60        %tmp13 = icmp eq i32 %tmp12, -1116              ; <i1> [#uses=1]
61        br i1 %tmp13, label %bb7, label %bb6
62
63bb6:            ; preds = %bb5
64        call void @abort() noreturn nounwind
65        unreachable
66
67bb7:            ; preds = %bb5
68        br label %return
69
70return:         ; preds = %bb7
71        ret i32 0
72}
73
74declare void @abort() noreturn nounwind
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