1 ; Check that unaligned accesses are allowed in general. We check the
2 ; few exceptions (like CRL) in their respective test files.
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
6 ; Check that these four byte stores become a single word store.
7 define void @f1(ptr %ptr) {
9 ; CHECK: iilf [[REG:%r[0-5]]], 66051
10 ; CHECK: st [[REG]], 0(%r2)
12 %off1 = getelementptr i8, ptr %ptr, i64 1
13 %off2 = getelementptr i8, ptr %ptr, i64 2
14 %off3 = getelementptr i8, ptr %ptr, i64 3
22 ; Check that unaligned 2-byte accesses are allowed.
23 define i16 @f2(ptr %src, ptr %dst) {
25 ; CHECK: lh %r2, 0(%r2)
26 ; CHECK: sth %r2, 0(%r3)
28 %val = load i16, ptr %src, align 1
29 store i16 %val, ptr %dst, align 1
33 ; Check that unaligned 4-byte accesses are allowed.
34 define i32 @f3(ptr %src1, ptr %src2, ptr %dst) {
36 ; CHECK: l %r2, 0(%r2)
37 ; CHECK: s %r2, 0(%r3)
38 ; CHECK: st %r2, 0(%r4)
40 %val1 = load i32, ptr %src1, align 1
41 %val2 = load i32, ptr %src2, align 2
42 %sub = sub i32 %val1, %val2
43 store i32 %sub, ptr %dst, align 1
47 ; Check that unaligned 8-byte accesses are allowed.
48 define i64 @f4(ptr %src1, ptr %src2, ptr %dst) {
50 ; CHECK: lg %r2, 0(%r2)
51 ; CHECK: sg %r2, 0(%r3)
52 ; CHECK: stg %r2, 0(%r4)
54 %val1 = load i64, ptr %src1, align 1
55 %val2 = load i64, ptr %src2, align 2
56 %sub = sub i64 %val1, %val2
57 store i64 %sub, ptr %dst, align 4