1; RUN: opt %loadPolly -polly-detect -polly-codegen-scev=false -analyze < %s | FileCheck %s
2; RUN: opt %loadPolly -polly-detect -polly-codegen-scev=true -analyze < %s | FileCheck %s -check-prefix=CHECK-SCEV
3
4; void f(long A[], long N) {
5;   long i;
6;   long i_non_canonical = 1;
7;   for (i = 0; i < N; ++i) {
8;     A[i] = i_non_canonical;
9;     i_non_canonical += 1;
10;   }
11; }
12
13target 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"
14target triple = "x86_64-unknown-linux-gnu"
15
16define void @f(i64* %A, i64 %N) nounwind {
17entry:
18  %cmp = icmp sgt i64 %N, 0
19  br i1 %cmp, label %for.i, label %return
20
21for.i:
22  %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.i ]
23  %indvar_non_canonical = phi i64 [ 1, %entry ], [ %indvar_non_canonical.next, %for.i ]
24  %scevgep = getelementptr i64* %A, i64 %indvar
25  store i64 %indvar_non_canonical, i64* %scevgep
26  %indvar.next = add nsw i64 %indvar, 1
27  %indvar_non_canonical.next = add nsw i64 %indvar_non_canonical, 1
28  %exitcond = icmp eq i64 %indvar.next, %N
29  br i1 %exitcond, label %return, label %for.i
30
31return:
32  ret void
33}
34
35; CHECK-NOT: Valid Region for Scop
36; CHECK-SCEV: Valid Region for Scop: for.i => return
37