1 ; Test 128-bit addition in which the second operand is variable.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
7 ; Test register addition.
8 define void @f1(i128 *%ptr, i64 %high, i64 %low) {
10 ; CHECK: slgr {{%r[0-5]}}, %r4
11 ; CHECK: slbgr {{%r[0-5]}}, %r3
14 %highx = zext i64 %high to i128
15 %lowx = zext i64 %low to i128
16 %bhigh = shl i128 %highx, 64
17 %b = or i128 %bhigh, %lowx
18 %sub = sub i128 %a, %b
19 store i128 %sub, i128 *%ptr
23 ; Test memory addition with no offset.
24 define void @f2(i64 %addr) {
26 ; CHECK: slg {{%r[0-5]}}, 8(%r2)
27 ; CHECK: slbg {{%r[0-5]}}, 0(%r2)
29 %bptr = inttoptr i64 %addr to i128 *
30 %aptr = getelementptr i128 *%bptr, i64 -8
33 %sub = sub i128 %a, %b
34 store i128 %sub, i128 *%aptr
38 ; Test the highest aligned offset that is in range of both SLG and SLBG.
39 define void @f3(i64 %base) {
41 ; CHECK: slg {{%r[0-5]}}, 524280(%r2)
42 ; CHECK: slbg {{%r[0-5]}}, 524272(%r2)
44 %addr = add i64 %base, 524272
45 %bptr = inttoptr i64 %addr to i128 *
46 %aptr = getelementptr i128 *%bptr, i64 -8
49 %sub = sub i128 %a, %b
50 store i128 %sub, i128 *%aptr
54 ; Test the next doubleword up, which requires separate address logic for SLG.
55 define void @f4(i64 %base) {
57 ; CHECK: lgr [[BASE:%r[1-5]]], %r2
58 ; CHECK: agfi [[BASE]], 524288
59 ; CHECK: slg {{%r[0-5]}}, 0([[BASE]])
60 ; CHECK: slbg {{%r[0-5]}}, 524280(%r2)
62 %addr = add i64 %base, 524280
63 %bptr = inttoptr i64 %addr to i128 *
64 %aptr = getelementptr i128 *%bptr, i64 -8
67 %sub = sub i128 %a, %b
68 store i128 %sub, i128 *%aptr
72 ; Test the next doubleword after that, which requires separate logic for
73 ; both instructions. It would be better to create an anchor at 524288
74 ; that both instructions can use, but that isn't implemented yet.
75 define void @f5(i64 %base) {
77 ; CHECK: slg {{%r[0-5]}}, 0({{%r[1-5]}})
78 ; CHECK: slbg {{%r[0-5]}}, 0({{%r[1-5]}})
80 %addr = add i64 %base, 524288
81 %bptr = inttoptr i64 %addr to i128 *
82 %aptr = getelementptr i128 *%bptr, i64 -8
85 %sub = sub i128 %a, %b
86 store i128 %sub, i128 *%aptr
90 ; Test the lowest displacement that is in range of both SLG and SLBG.
91 define void @f6(i64 %base) {
93 ; CHECK: slg {{%r[0-5]}}, -524280(%r2)
94 ; CHECK: slbg {{%r[0-5]}}, -524288(%r2)
96 %addr = add i64 %base, -524288
97 %bptr = inttoptr i64 %addr to i128 *
98 %aptr = getelementptr i128 *%bptr, i64 -8
100 %b = load i128 *%bptr
101 %sub = sub i128 %a, %b
102 store i128 %sub, i128 *%aptr
106 ; Test the next doubleword down, which is out of range of the SLBG.
107 define void @f7(i64 %base) {
109 ; CHECK: slg {{%r[0-5]}}, -524288(%r2)
110 ; CHECK: slbg {{%r[0-5]}}, 0({{%r[1-5]}})
112 %addr = add i64 %base, -524296
113 %bptr = inttoptr i64 %addr to i128 *
114 %aptr = getelementptr i128 *%bptr, i64 -8
115 %a = load i128 *%aptr
116 %b = load i128 *%bptr
117 %sub = sub i128 %a, %b
118 store i128 %sub, i128 *%aptr
122 ; Check that subtractions of spilled values can use SLG and SLBG rather than
124 define void @f8(i128 *%ptr0) {
126 ; CHECK: brasl %r14, foo@PLT
127 ; CHECK: slg {{%r[0-9]+}}, {{[0-9]+}}(%r15)
128 ; CHECK: slbg {{%r[0-9]+}}, {{[0-9]+}}(%r15)
130 %ptr1 = getelementptr i128 *%ptr0, i128 2
131 %ptr2 = getelementptr i128 *%ptr0, i128 4
132 %ptr3 = getelementptr i128 *%ptr0, i128 6
133 %ptr4 = getelementptr i128 *%ptr0, i128 8
135 %val0 = load i128 *%ptr0
136 %val1 = load i128 *%ptr1
137 %val2 = load i128 *%ptr2
138 %val3 = load i128 *%ptr3
139 %val4 = load i128 *%ptr4
141 %retptr = call i128 *@foo()
143 %ret = load i128 *%retptr
144 %sub0 = sub i128 %ret, %val0
145 %sub1 = sub i128 %sub0, %val1
146 %sub2 = sub i128 %sub1, %val2
147 %sub3 = sub i128 %sub2, %val3
148 %sub4 = sub i128 %sub3, %val4
149 store i128 %sub4, i128 *%retptr