1; RUN: opt %loadPolly -polly-codegen -S < %s 2>&1 | not FileCheck %s
2
3;#include <string.h>
4;#include <stdio.h>
5;#define N 1021
6;
7;int main () {
8;  int i;
9;  int A[N];
10;  int red;
11;
12;  memset(A, 0, sizeof(int) * N);
13;
14;  A[0] = 1;
15;  A[1] = 1;
16;  red = 0;
17;
18;  __sync_synchronize();
19;
20;  for (i = 2; i < N; i++) {
21;    A[i] = A[i-1] + A[i-2];
22;    red += A[i-2];
23;  }
24;
25;  __sync_synchronize();
26;
27;  if (red != 382399368)
28;    return 1;
29;}
30
31target 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-n8:16:32:64"
32
33define i32 @main() nounwind {
34; <label>:0
35  %A = alloca [1021 x i32], align 16              ; <[1021 x i32]*> [#uses=6]
36  %1 = getelementptr inbounds [1021 x i32], [1021 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
37  %2 = bitcast i32* %1 to i8*                     ; <i8*> [#uses=1]
38  call void @llvm.memset.p0i8.i64(i8* %2, i8 0, i64 4084, i32 1, i1 false)
39  %3 = getelementptr inbounds [1021 x i32], [1021 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
40  %4 = getelementptr inbounds i32, i32* %3, i64 0      ; <i32*> [#uses=1]
41  store i32 1, i32* %4
42  %5 = getelementptr inbounds [1021 x i32], [1021 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
43  %6 = getelementptr inbounds i32, i32* %5, i64 1      ; <i32*> [#uses=1]
44  store i32 1, i32* %6
45  fence seq_cst
46  br label %7
47
48; <label>:7                                       ; preds = %14, %0
49  %indvar = phi i64 [ %indvar.next, %14 ], [ 0, %0 ] ; <i64> [#uses=5]
50  %red.0 = phi i32 [ 0, %0 ], [ %13, %14 ]        ; <i32> [#uses=2]
51  %scevgep = getelementptr [1021 x i32], [1021 x i32]* %A, i64 0, i64 %indvar ; <i32*> [#uses=2]
52  %tmp = add i64 %indvar, 2                       ; <i64> [#uses=1]
53  %scevgep1 = getelementptr [1021 x i32], [1021 x i32]* %A, i64 0, i64 %tmp ; <i32*> [#uses=1]
54  %tmp2 = add i64 %indvar, 1                      ; <i64> [#uses=1]
55  %scevgep3 = getelementptr [1021 x i32], [1021 x i32]* %A, i64 0, i64 %tmp2 ; <i32*> [#uses=1]
56  %exitcond = icmp ne i64 %indvar, 1019           ; <i1> [#uses=1]
57  br i1 %exitcond, label %8, label %15
58
59; <label>:8                                       ; preds = %7
60  %9 = load i32, i32* %scevgep3                        ; <i32> [#uses=1]
61  %10 = load i32, i32* %scevgep                        ; <i32> [#uses=1]
62  %11 = add nsw i32 %9, %10                       ; <i32> [#uses=1]
63  store i32 %11, i32* %scevgep1
64  %12 = load i32, i32* %scevgep                        ; <i32> [#uses=1]
65  %13 = add nsw i32 %red.0, %12                   ; <i32> [#uses=1]
66  br label %14
67
68; <label>:14                                      ; preds = %8
69  %indvar.next = add i64 %indvar, 1               ; <i64> [#uses=1]
70  br label %7
71
72; <label>:15                                      ; preds = %7
73  %red.0.lcssa = phi i32 [ %red.0, %7 ]           ; <i32> [#uses=1]
74  fence seq_cst
75  %16 = icmp ne i32 %red.0.lcssa, 382399368       ; <i1> [#uses=1]
76  br i1 %16, label %17, label %18
77
78; <label>:17                                      ; preds = %15
79  br label %18
80
81; <label>:18                                      ; preds = %17, %15
82  %.0 = phi i32 [ 1, %17 ], [ 0, %15 ]            ; <i32> [#uses=1]
83  ret i32 %.0
84}
85
86declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
87
88; CHECK:  Could not generate independent blocks
89