1; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
2;
3; Verify that we only have one parameter and one invariant load for all
4; three loads that occure in the region but actually access the same
5; location. Also check that the execution context is the most generic
6; one, e.g., here the universal set.
7;
8; CHECK:      Invariant Accesses: {
9; CHECK-NEXT:         ReadAccess :=    [Reduction Type: NONE] [Scalar: 0]
10; CHECK-NEXT:             [bounds0l0, p] -> { Stmt_for_cond_4[i0, i1, i2] -> MemRef_bounds[0] };
11; CHECK-NEXT:         Execution Context: [bounds0l0, p] -> {  :  }
12; CHECK-NEXT: }
13;
14; CHECK:      p0: %bounds0l0
15; CHECK-NEXT: p1: %p
16; CHECK-NOT:  p2
17;
18; CHECK:      Statements {
19; CHECK-NEXT:     Stmt_for_body_6
20; CHECK-NEXT:         Domain :=
21; CHECK-NEXT:             [bounds0l0, p] -> { Stmt_for_body_6[i0, i1, i2] : p = 0 and 0 <= i0 < bounds0l0 and 0 <= i1 < bounds0l0 and 0 <= i2 < bounds0l0 };
22; CHECK-NEXT:         Schedule :=
23; CHECK-NEXT:             [bounds0l0, p] -> { Stmt_for_body_6[i0, i1, i2] -> [i0, i1, i2] };
24; CHECK-NEXT:         ReadAccess :=    [Reduction Type: NONE] [Scalar: 0]
25; CHECK-NEXT:             [bounds0l0, p] -> { Stmt_for_body_6[i0, i1, i2] -> MemRef_data[i0, i1, i2] };
26; CHECK-NEXT:         MustWriteAccess :=    [Reduction Type: NONE] [Scalar: 0]
27; CHECK-NEXT:             [bounds0l0, p] -> { Stmt_for_body_6[i0, i1, i2] -> MemRef_data[i0, i1, i2] };
28; CHECK-NEXT: }
29;
30;    int bounds[1];
31;    double data[1024][1024][1024];
32;
33;    void foo(int p) {
34;      int i, j, k;
35;      for (k = 0; k < bounds[0]; k++)
36;        if (p == 0)
37;          for (j = 0; j < bounds[0]; j++)
38;            for (i = 0; i < bounds[0]; i++)
39;              data[k][j][i] += i + j + k;
40;    }
41;
42target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
43
44@bounds = common global [1 x i32] zeroinitializer, align 4
45@data = common global [1024 x [1024 x [1024 x double]]] zeroinitializer, align 16
46
47define void @foo(i32 %p) {
48entry:
49  br label %for.cond
50
51for.cond:                                         ; preds = %for.inc.16, %entry
52  %indvars.iv5 = phi i64 [ %indvars.iv.next6, %for.inc.16 ], [ 0, %entry ]
53  %bounds0l0 = load i32, i32* getelementptr inbounds ([1 x i32], [1 x i32]* @bounds, i64 0, i64 0), align 4
54  %tmp7 = sext i32 %bounds0l0 to i64
55  %cmp = icmp slt i64 %indvars.iv5, %tmp7
56  br i1 %cmp, label %for.body, label %for.end.18
57
58for.body:                                         ; preds = %for.cond
59  %cmpp = icmp eq i32 %p, 0
60  br i1 %cmpp, label %for.cond.1, label %for.inc.16
61
62for.cond.1:                                       ; preds = %for.inc.13, %for.body
63  %indvars.iv3 = phi i64 [ %indvars.iv.next4, %for.inc.13 ], [ 0, %for.body ]
64  %bounds0l1 = load i32, i32* getelementptr inbounds ([1 x i32], [1 x i32]* @bounds, i64 0, i64 0), align 4
65  %tmp9 = sext i32 %bounds0l1 to i64
66  %cmp2 = icmp slt i64 %indvars.iv3, %tmp9
67  br i1 %cmp2, label %for.body.3, label %for.end.15
68
69for.body.3:                                       ; preds = %for.cond.1
70  br label %for.cond.4
71
72for.cond.4:                                       ; preds = %for.inc, %for.body.3
73  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %for.body.3 ]
74  %bounds0l2 = load i32, i32* getelementptr inbounds ([1 x i32], [1 x i32]* @bounds, i64 0, i64 0), align 4
75  %tmp11 = sext i32 %bounds0l2 to i64
76  %cmp5 = icmp slt i64 %indvars.iv, %tmp11
77  br i1 %cmp5, label %for.body.6, label %for.end
78
79for.body.6:                                       ; preds = %for.cond.4
80  %tmp12 = add nsw i64 %indvars.iv, %indvars.iv3
81  %tmp13 = add nsw i64 %tmp12, %indvars.iv5
82  %tmp14 = trunc i64 %tmp13 to i32
83  %conv = sitofp i32 %tmp14 to double
84  %arrayidx11 = getelementptr inbounds [1024 x [1024 x [1024 x double]]], [1024 x [1024 x [1024 x double]]]* @data, i64 0, i64 %indvars.iv5, i64 %indvars.iv3, i64 %indvars.iv
85  %tmp15 = load double, double* %arrayidx11, align 8
86  %add12 = fadd double %tmp15, %conv
87  store double %add12, double* %arrayidx11, align 8
88  br label %for.inc
89
90for.inc:                                          ; preds = %for.body.6
91  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
92  br label %for.cond.4
93
94for.end:                                          ; preds = %for.cond.4
95  br label %for.inc.13
96
97for.inc.13:                                       ; preds = %for.end
98  %indvars.iv.next4 = add nuw nsw i64 %indvars.iv3, 1
99  br label %for.cond.1
100
101for.end.15:                                       ; preds = %for.cond.1
102  br label %for.inc.16
103
104for.inc.16:                                       ; preds = %for.end.15
105  %indvars.iv.next6 = add nuw nsw i64 %indvars.iv5, 1
106  br label %for.cond
107
108for.end.18:                                       ; preds = %for.cond
109  ret void
110}
111