1; RUN: opt --opaque-pointers -loop-load-elim -S < %s | FileCheck %s
2
3; Don't crash if the store and the load use different types.
4;
5;   for (unsigned i = 0; i < 100; i++) {
6;     A[i+1] = B[i] + 2;
7;     C[i] = ((float*)A)[i] * 2;
8;   }
9
10target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
11
12; CHECK-LABEL: @f(
13define void @f(ptr noalias %A, ptr noalias %B, ptr noalias %C, i64 %N) {
14
15entry:
16  br label %for.body
17
18for.body:                                         ; preds = %for.body, %entry
19  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
20  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
21
22  %Aidx_next = getelementptr inbounds i32, ptr %A, i64 %indvars.iv.next
23  %Bidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
24  %Cidx = getelementptr inbounds i32, ptr %C, i64 %indvars.iv
25  %Aidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
26
27  %b = load i32, ptr %Bidx, align 4
28  %a_p1 = add i32 %b, 2
29  store i32 %a_p1, ptr %Aidx_next, align 4
30
31; CHECK: %a = load float, ptr %Aidx, align 4
32  %a = load float, ptr %Aidx, align 4
33; CHECK-NEXT: %c = fmul float %a, 2.0
34  %c = fmul float %a, 2.0
35  %c.int = fptosi float %c to i32
36  store i32 %c.int, ptr %Cidx, align 4
37
38  %exitcond = icmp eq i64 %indvars.iv.next, %N
39  br i1 %exitcond, label %for.end, label %for.body
40
41for.end:                                          ; preds = %for.body
42  ret void
43}
44
45; Don't crash if the store and the load use different types.
46;
47;   for (unsigned i = 0; i < 100; i++) {
48;     A[i+1] = B[i] + 2;
49;     A[i+1] = B[i] + 3;
50;     C[i] = ((float*)A)[i] * 2;
51;   }
52
53; CHECK-LABEL: @f2(
54define void @f2(ptr noalias %A, ptr noalias %B, ptr noalias %C, i64 %N) {
55
56entry:
57  br label %for.body
58
59for.body:                                         ; preds = %for.body, %entry
60  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
61  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
62
63  %Aidx_next = getelementptr inbounds i32, ptr %A, i64 %indvars.iv.next
64  %Bidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
65  %Cidx = getelementptr inbounds i32, ptr %C, i64 %indvars.iv
66  %Aidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
67
68  %b = load i32, ptr %Bidx, align 4
69  %a_p2 = add i32 %b, 2
70  store i32 %a_p2, ptr %Aidx_next, align 4
71
72  %a_p3 = add i32 %b, 3
73  store i32 %a_p3, ptr %Aidx_next, align 4
74
75; CHECK: %a = load float, ptr %Aidx, align 4
76  %a = load float, ptr %Aidx, align 4
77; CHECK-NEXT: %c = fmul float %a, 2.0
78  %c = fmul float %a, 2.0
79  %c.int = fptosi float %c to i32
80  store i32 %c.int, ptr %Cidx, align 4
81
82  %exitcond = icmp eq i64 %indvars.iv.next, %N
83  br i1 %exitcond, label %for.end, label %for.body
84
85for.end:                                          ; preds = %for.body
86  ret void
87}
88