1 ; Test 64-bit byteswaps from memory to registers.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 declare i64 @llvm.bswap.i64(i64 %a)
7 ; Check LRVG with no displacement.
8 define i64 @f1(i64 *%src) {
10 ; CHECK: lrvg %r2, 0(%r2)
13 %swapped = call i64 @llvm.bswap.i64(i64 %a)
17 ; Check the high end of the aligned LRVG range.
18 define i64 @f2(i64 *%src) {
20 ; CHECK: lrvg %r2, 524280(%r2)
22 %ptr = getelementptr i64 *%src, i64 65535
24 %swapped = call i64 @llvm.bswap.i64(i64 %a)
28 ; Check the next doubleword up, which needs separate address logic.
29 ; Other sequences besides this one would be OK.
30 define i64 @f3(i64 *%src) {
32 ; CHECK: agfi %r2, 524288
33 ; CHECK: lrvg %r2, 0(%r2)
35 %ptr = getelementptr i64 *%src, i64 65536
37 %swapped = call i64 @llvm.bswap.i64(i64 %a)
41 ; Check the high end of the negative aligned LRVG range.
42 define i64 @f4(i64 *%src) {
44 ; CHECK: lrvg %r2, -8(%r2)
46 %ptr = getelementptr i64 *%src, i64 -1
48 %swapped = call i64 @llvm.bswap.i64(i64 %a)
52 ; Check the low end of the LRVG range.
53 define i64 @f5(i64 *%src) {
55 ; CHECK: lrvg %r2, -524288(%r2)
57 %ptr = getelementptr i64 *%src, i64 -65536
59 %swapped = call i64 @llvm.bswap.i64(i64 %a)
63 ; Check the next doubleword down, which needs separate address logic.
64 ; Other sequences besides this one would be OK.
65 define i64 @f6(i64 *%src) {
67 ; CHECK: agfi %r2, -524296
68 ; CHECK: lrvg %r2, 0(%r2)
70 %ptr = getelementptr i64 *%src, i64 -65537
72 %swapped = call i64 @llvm.bswap.i64(i64 %a)
76 ; Check that LRVG allows an index.
77 define i64 @f7(i64 %src, i64 %index) {
79 ; CHECK: lrvg %r2, 524287({{%r3,%r2|%r2,%r3}})
81 %add1 = add i64 %src, %index
82 %add2 = add i64 %add1, 524287
83 %ptr = inttoptr i64 %add2 to i64 *
85 %swapped = call i64 @llvm.bswap.i64(i64 %a)