xref: /llvm-project/polly/test/ScopInfo/multidim_gep_pointercast2.ll (revision 5aafc6d58f3405662902cee006be11e599801b88)
1; RUN: opt %loadNPMPolly '-passes=print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s
2;
3; Verify that we do not use the GetElementPtr information to delinearize A
4; because of the cast in-between. Use the single-dimensional modeling instead.
5;
6;    void f(short A[][2]) {
7;      for (int i = 0; i < 100; i++)
8;        *((long *)&A[4 * i][0]) = 0;
9;    }
10;
11target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
12
13define void @f(ptr %A) {
14entry:
15  br label %for.cond
16
17for.cond:                                         ; preds = %for.inc, %entry
18  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
19  %exitcond = icmp ne i64 %indvars.iv, 100
20  br i1 %exitcond, label %for.body, label %for.end
21
22for.body:                                         ; preds = %for.cond
23  %tmp = shl nsw i64 %indvars.iv, 2
24  %arrayidx1 = getelementptr inbounds [2 x i16], ptr %A, i64 %tmp, i64 0
25  store i64 0, ptr %arrayidx1, align 8
26  br label %for.inc
27
28for.inc:                                          ; preds = %for.body
29  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
30  br label %for.cond
31
32for.end:                                          ; preds = %for.cond
33  ret void
34}
35
36
37; CHECK:      Arrays {
38; CHECK-NEXT:     i64 MemRef_A[*]; // Element size 8
39; CHECK-NEXT: }
40; CHECK:      Statements {
41; CHECK-NEXT:     Stmt_for_body
42; CHECK-NEXT:         Domain :=
43; CHECK-NEXT:             { Stmt_for_body[i0] : 0 <= i0 <= 99 };
44; CHECK-NEXT:         Schedule :=
45; CHECK-NEXT:             { Stmt_for_body[i0] -> [i0] };
46; CHECK-NEXT:         MustWriteAccess :=    [Reduction Type: NONE] [Scalar: 0]
47; CHECK-NEXT:             { Stmt_for_body[i0] -> MemRef_A[2i0] };
48; CHECK-NEXT: }
49