1 ; Test 64-bit subtraction in which the second operand is variable.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
9 define i64 @f1(i64 %a, i64 %b) {
17 ; Check SG with no displacement.
18 define i64 @f2(i64 %a, ptr %src) {
20 ; CHECK: sg %r2, 0(%r3)
22 %b = load i64, ptr %src
27 ; Check the high end of the aligned SG range.
28 define i64 @f3(i64 %a, ptr %src) {
30 ; CHECK: sg %r2, 524280(%r3)
32 %ptr = getelementptr i64, ptr %src, i64 65535
33 %b = load i64, ptr %ptr
38 ; Check the next doubleword up, which needs separate address logic.
39 ; Other sequences besides this one would be OK.
40 define i64 @f4(i64 %a, ptr %src) {
42 ; CHECK: agfi %r3, 524288
43 ; CHECK: sg %r2, 0(%r3)
45 %ptr = getelementptr i64, ptr %src, i64 65536
46 %b = load i64, ptr %ptr
51 ; Check the high end of the negative aligned SG range.
52 define i64 @f5(i64 %a, ptr %src) {
54 ; CHECK: sg %r2, -8(%r3)
56 %ptr = getelementptr i64, ptr %src, i64 -1
57 %b = load i64, ptr %ptr
62 ; Check the low end of the SG range.
63 define i64 @f6(i64 %a, ptr %src) {
65 ; CHECK: sg %r2, -524288(%r3)
67 %ptr = getelementptr i64, ptr %src, i64 -65536
68 %b = load i64, ptr %ptr
73 ; Check the next doubleword down, which needs separate address logic.
74 ; Other sequences besides this one would be OK.
75 define i64 @f7(i64 %a, ptr %src) {
77 ; CHECK: agfi %r3, -524296
78 ; CHECK: sg %r2, 0(%r3)
80 %ptr = getelementptr i64, ptr %src, i64 -65537
81 %b = load i64, ptr %ptr
86 ; Check that SG allows an index.
87 define i64 @f8(i64 %a, i64 %src, i64 %index) {
89 ; CHECK: sg %r2, 524280({{%r4,%r3|%r3,%r4}})
91 %add1 = add i64 %src, %index
92 %add2 = add i64 %add1, 524280
93 %ptr = inttoptr i64 %add2 to ptr
94 %b = load i64, ptr %ptr
99 ; Check that subtractions of spilled values can use SG rather than SGR.
100 define i64 @f9(ptr %ptr0) {
102 ; CHECK: brasl %r14, foo@PLT
103 ; CHECK: sg %r2, 160(%r15)
105 %ptr1 = getelementptr i64, ptr %ptr0, i64 2
106 %ptr2 = getelementptr i64, ptr %ptr0, i64 4
107 %ptr3 = getelementptr i64, ptr %ptr0, i64 6
108 %ptr4 = getelementptr i64, ptr %ptr0, i64 8
109 %ptr5 = getelementptr i64, ptr %ptr0, i64 10
110 %ptr6 = getelementptr i64, ptr %ptr0, i64 12
111 %ptr7 = getelementptr i64, ptr %ptr0, i64 14
112 %ptr8 = getelementptr i64, ptr %ptr0, i64 16
113 %ptr9 = getelementptr i64, ptr %ptr0, i64 18
115 %val0 = load i64, ptr %ptr0
116 %val1 = load i64, ptr %ptr1
117 %val2 = load i64, ptr %ptr2
118 %val3 = load i64, ptr %ptr3
119 %val4 = load i64, ptr %ptr4
120 %val5 = load i64, ptr %ptr5
121 %val6 = load i64, ptr %ptr6
122 %val7 = load i64, ptr %ptr7
123 %val8 = load i64, ptr %ptr8
124 %val9 = load i64, ptr %ptr9
126 %ret = call i64 @foo()
128 %sub0 = sub i64 %ret, %val0
129 %sub1 = sub i64 %sub0, %val1
130 %sub2 = sub i64 %sub1, %val2
131 %sub3 = sub i64 %sub2, %val3
132 %sub4 = sub i64 %sub3, %val4
133 %sub5 = sub i64 %sub4, %val5
134 %sub6 = sub i64 %sub5, %val6
135 %sub7 = sub i64 %sub6, %val7
136 %sub8 = sub i64 %sub7, %val8
137 %sub9 = sub i64 %sub8, %val9