1 ; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
3 target 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-n8:16:32:64-S128"
4 target triple = "x86_64-apple-macosx10.8.0"
6 ; int foo(int * restrict B, int * restrict A, int n, int m) {
7 ; B[0] = n * A[0] + m * A[0];
8 ; B[1] = n * A[1] + m * A[1];
9 ; B[2] = n * A[2] + m * A[2];
10 ; B[3] = n * A[3] + m * A[3];
15 ; CHECK: load <4 x i32>
16 ; CHECK: mul <4 x i32>
17 ; CHECK: store <4 x i32>
19 define i32 @foo(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) #0 {
21 %0 = load i32, i32* %A, align 4
22 %mul238 = add i32 %m, %n
23 %add = mul i32 %0, %mul238
24 store i32 %add, i32* %B, align 4
25 %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
26 %1 = load i32, i32* %arrayidx4, align 4
27 %add8 = mul i32 %1, %mul238
28 %arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
29 store i32 %add8, i32* %arrayidx9, align 4
30 %arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
31 %2 = load i32, i32* %arrayidx10, align 4
32 %add14 = mul i32 %2, %mul238
33 %arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
34 store i32 %add14, i32* %arrayidx15, align 4
35 %arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
36 %3 = load i32, i32* %arrayidx16, align 4
37 %add20 = mul i32 %3, %mul238
38 %arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
39 store i32 %add20, i32* %arrayidx21, align 4
44 ; int extr_user(int * restrict B, int * restrict A, int n, int m) {
45 ; B[0] = n * A[0] + m * A[0];
46 ; B[1] = n * A[1] + m * A[1];
47 ; B[2] = n * A[2] + m * A[2];
48 ; B[3] = n * A[3] + m * A[3];
52 ; CHECK-LABEL: @extr_user(
53 ; CHECK: load <4 x i32>
54 ; CHECK: store <4 x i32>
55 ; CHECK: extractelement <4 x i32>
57 define i32 @extr_user(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
59 %0 = load i32, i32* %A, align 4
60 %mul238 = add i32 %m, %n
61 %add = mul i32 %0, %mul238
62 store i32 %add, i32* %B, align 4
63 %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
64 %1 = load i32, i32* %arrayidx4, align 4
65 %add8 = mul i32 %1, %mul238
66 %arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
67 store i32 %add8, i32* %arrayidx9, align 4
68 %arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
69 %2 = load i32, i32* %arrayidx10, align 4
70 %add14 = mul i32 %2, %mul238
71 %arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
72 store i32 %add14, i32* %arrayidx15, align 4
73 %arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
74 %3 = load i32, i32* %arrayidx16, align 4
75 %add20 = mul i32 %3, %mul238
76 %arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
77 store i32 %add20, i32* %arrayidx21, align 4
78 ret i32 %0 ;<--------- This value has multiple users
81 ; In this example we have an external user that is not the first element in the vector.
82 ; CHECK-LABEL: @extr_user1(
83 ; CHECK: load <4 x i32>
84 ; CHECK: store <4 x i32>
85 ; CHECK: extractelement <4 x i32>
87 define i32 @extr_user1(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
89 %0 = load i32, i32* %A, align 4
90 %mul238 = add i32 %m, %n
91 %add = mul i32 %0, %mul238
92 store i32 %add, i32* %B, align 4
93 %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
94 %1 = load i32, i32* %arrayidx4, align 4
95 %add8 = mul i32 %1, %mul238
96 %arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
97 store i32 %add8, i32* %arrayidx9, align 4
98 %arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
99 %2 = load i32, i32* %arrayidx10, align 4
100 %add14 = mul i32 %2, %mul238
101 %arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
102 store i32 %add14, i32* %arrayidx15, align 4
103 %arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
104 %3 = load i32, i32* %arrayidx16, align 4
105 %add20 = mul i32 %3, %mul238
106 %arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
107 store i32 %add20, i32* %arrayidx21, align 4
108 ret i32 %1 ;<--------- This value has multiple users