1; RUN: opt < %s -basicaa -slp-vectorizer -S |FileCheck %s
2target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
3
4; Test if SLP can handle GEP expressions.
5; The test perform the following action:
6;   x->first  = y->first  + 16
7;   x->second = y->second + 16
8
9; CHECK-LABEL: foo1
10; CHECK: <2 x i32*>
11define void @foo1 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y) {
12  %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0
13  %2 = load i32*, i32** %1, align 8
14  %3 = getelementptr inbounds i32, i32* %2, i64 16
15  %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0
16  store i32* %3, i32** %4, align 8
17  %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1
18  %6 = load i32*, i32** %5, align 8
19  %7 = getelementptr inbounds i32, i32* %6, i64 16
20  %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1
21  store i32* %7, i32** %8, align 8
22  ret void
23}
24
25; Test that we don't vectorize GEP expressions if indexes are not constants.
26; We can't produce an efficient code in that case.
27; CHECK-LABEL: foo2
28; CHECK-NOT: <2 x i32*>
29define void @foo2 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y, i32 %i) {
30  %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0
31  %2 = load i32*, i32** %1, align 8
32  %3 = getelementptr inbounds i32, i32* %2, i32 %i
33  %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0
34  store i32* %3, i32** %4, align 8
35  %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1
36  %6 = load i32*, i32** %5, align 8
37  %7 = getelementptr inbounds i32, i32* %6, i32 %i
38  %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1
39  store i32* %7, i32** %8, align 8
40  ret void
41}
42