1; RUN: opt %loadPolly -polly-simplify -analyze < %s | FileCheck %s -match-full-lines
2; RUN: opt %loadPolly -polly-simplify -polly-codegen -S < %s | FileCheck %s -check-prefix=CODEGEN
3;
4; for (int i = 0; i < n; i+=1) {
5;    (void)A[0];
6;    if (21.0 == 0.0)
7;      B[0] = 42.0;
8; }
9;
10define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
11entry:
12  br label %for
13
14for:
15  %j = phi i32 [0, %entry], [%j.inc, %inc]
16  %j.cmp = icmp slt i32 %j, %n
17  br i1 %j.cmp, label %region_entry, label %exit
18
19
20    region_entry:
21      %val = load double, double* %A
22      %cmp = fcmp oeq double 21.0, 0.0
23      br i1 %cmp, label %region_true, label %region_exit
24
25    region_true:
26      store double 42.0, double* %B
27      br label %region_exit
28
29    region_exit:
30      br label %body
31
32    body:
33      br label %inc
34
35
36inc:
37  %j.inc = add nuw nsw i32 %j, 1
38  br label %for
39
40exit:
41  br label %return
42
43return:
44  ret void
45}
46
47
48; CHECK: Statistics {
49; CHECK:     Dead accesses removed: 1
50; CHECK:     Dead instructions removed: 1
51; CHECK: }
52
53; CHECK:      After accesses {
54; CHECK-NEXT:     Stmt_region_entry__TO__region_exit
55; CHECK-NEXT:             MayWriteAccess :=   [Reduction Type: NONE] [Scalar: 0]
56; CHECK-NEXT:                 [n] -> { Stmt_region_entry__TO__region_exit[i0] -> MemRef_B[0] };
57; CHECK-NEXT: }
58
59
60; CODEGEN:      polly.stmt.region_entry:
61; CODEGEN-NEXT:   %p_cmp = fcmp oeq double 2.100000e+01, 0.000000e+00
62; CODEGEN-NEXT:   br i1 %p_cmp
63