1 ; Test 64-bit subtraction in which the second operand is variable.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
6 define i64 @f1(i64 %a, i64 %b) {
14 ; Check SG with no displacement.
15 define i64 @f2(i64 %a, i64 *%src) {
17 ; CHECK: sg %r2, 0(%r3)
24 ; Check the high end of the aligned SG range.
25 define i64 @f3(i64 %a, i64 *%src) {
27 ; CHECK: sg %r2, 524280(%r3)
29 %ptr = getelementptr i64 *%src, i64 65535
35 ; Check the next doubleword up, which needs separate address logic.
36 ; Other sequences besides this one would be OK.
37 define i64 @f4(i64 %a, i64 *%src) {
39 ; CHECK: agfi %r3, 524288
40 ; CHECK: sg %r2, 0(%r3)
42 %ptr = getelementptr i64 *%src, i64 65536
48 ; Check the high end of the negative aligned SG range.
49 define i64 @f5(i64 %a, i64 *%src) {
51 ; CHECK: sg %r2, -8(%r3)
53 %ptr = getelementptr i64 *%src, i64 -1
59 ; Check the low end of the SG range.
60 define i64 @f6(i64 %a, i64 *%src) {
62 ; CHECK: sg %r2, -524288(%r3)
64 %ptr = getelementptr i64 *%src, i64 -65536
70 ; Check the next doubleword down, which needs separate address logic.
71 ; Other sequences besides this one would be OK.
72 define i64 @f7(i64 %a, i64 *%src) {
74 ; CHECK: agfi %r3, -524296
75 ; CHECK: sg %r2, 0(%r3)
77 %ptr = getelementptr i64 *%src, i64 -65537
83 ; Check that SG allows an index.
84 define i64 @f8(i64 %a, i64 %src, i64 %index) {
86 ; CHECK: sg %r2, 524280({{%r4,%r3|%r3,%r4}})
88 %add1 = add i64 %src, %index
89 %add2 = add i64 %add1, 524280
90 %ptr = inttoptr i64 %add2 to i64 *