1; RUN: opt -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(i32* noalias %A, i32* noalias %B, i32* 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, i32* %A, i64 %indvars.iv.next
23  %Bidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
24  %Cidx = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
25  %Aidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
26  %Aidx.float = bitcast i32* %Aidx to float*
27
28  %b = load i32, i32* %Bidx, align 4
29  %a_p1 = add i32 %b, 2
30  store i32 %a_p1, i32* %Aidx_next, align 4
31
32; CHECK: %a = load float, float* %Aidx.float, align 4
33  %a = load float, float* %Aidx.float, align 4
34; CHECK-NEXT: %c = fmul float %a, 2.0
35  %c = fmul float %a, 2.0
36  %c.int = fptosi float %c to i32
37  store i32 %c.int, i32* %Cidx, align 4
38
39  %exitcond = icmp eq i64 %indvars.iv.next, %N
40  br i1 %exitcond, label %for.end, label %for.body
41
42for.end:                                          ; preds = %for.body
43  ret void
44}
45
46; Don't crash if the store and the load use different types.
47;
48;   for (unsigned i = 0; i < 100; i++) {
49;     A[i+1] = B[i] + 2;
50;     A[i+1] = B[i] + 3;
51;     C[i] = ((float*)A)[i] * 2;
52;   }
53
54; CHECK-LABEL: @f2(
55define void @f2(i32* noalias %A, i32* noalias %B, i32* noalias %C, i64 %N) {
56
57entry:
58  br label %for.body
59
60for.body:                                         ; preds = %for.body, %entry
61  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
62  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
63
64  %Aidx_next = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next
65  %Bidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
66  %Cidx = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
67  %Aidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
68  %Aidx.float = bitcast i32* %Aidx to float*
69
70  %b = load i32, i32* %Bidx, align 4
71  %a_p2 = add i32 %b, 2
72  store i32 %a_p2, i32* %Aidx_next, align 4
73
74  %a_p3 = add i32 %b, 3
75  store i32 %a_p3, i32* %Aidx_next, align 4
76
77; CHECK: %a = load float, float* %Aidx.float, align 4
78  %a = load float, float* %Aidx.float, align 4
79; CHECK-NEXT: %c = fmul float %a, 2.0
80  %c = fmul float %a, 2.0
81  %c.int = fptosi float %c to i32
82  store i32 %c.int, i32* %Cidx, align 4
83
84  %exitcond = icmp eq i64 %indvars.iv.next, %N
85  br i1 %exitcond, label %for.end, label %for.body
86
87for.end:                                          ; preds = %for.body
88  ret void
89}
90