1 ; Check that unaligned accesses are allowed in general. We check the
2 ; few exceptions (like CRL) in their respective test files.
4 ; FIXME: -combiner-alias-analysis (the default for SystemZ) stops
5 ; f1 from being optimized.
6 ; RUN: llc < %s -mtriple=s390x-linux-gnu -combiner-alias-analysis=false \
9 ; Check that these four byte stores become a single word store.
10 define void @f1(i8 *%ptr) {
12 ; CHECK: iilf [[REG:%r[0-5]]], 66051
13 ; CHECK: st [[REG]], 0(%r2)
15 %off1 = getelementptr i8 *%ptr, i64 1
16 %off2 = getelementptr i8 *%ptr, i64 2
17 %off3 = getelementptr i8 *%ptr, i64 3
25 ; Check that unaligned 2-byte accesses are allowed.
26 define i16 @f2(i16 *%src, i16 *%dst) {
28 ; CHECK: lh %r2, 0(%r2)
29 ; CHECK: sth %r2, 0(%r3)
31 %val = load i16 *%src, align 1
32 store i16 %val, i16 *%dst, align 1
36 ; Check that unaligned 4-byte accesses are allowed.
37 define i32 @f3(i32 *%src1, i32 *%src2, i32 *%dst) {
39 ; CHECK: l %r2, 0(%r2)
40 ; CHECK: s %r2, 0(%r3)
41 ; CHECK: st %r2, 0(%r4)
43 %val1 = load i32 *%src1, align 1
44 %val2 = load i32 *%src2, align 2
45 %sub = sub i32 %val1, %val2
46 store i32 %sub, i32 *%dst, align 1
50 ; Check that unaligned 8-byte accesses are allowed.
51 define i64 @f4(i64 *%src1, i64 *%src2, i64 *%dst) {
53 ; CHECK: lg %r2, 0(%r2)
54 ; CHECK: sg %r2, 0(%r3)
55 ; CHECK: stg %r2, 0(%r4)
57 %val1 = load i64 *%src1, align 1
58 %val2 = load i64 *%src2, align 2
59 %sub = sub i64 %val1, %val2
60 store i64 %sub, i64 *%dst, align 4