1; Test 128-bit addition when the distinct-operands facility is available.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
4
5; Test the case where both operands are in registers.
6define i64 @f1(i64 %a, i64 %b, i64 %c, i64 %d, i64 *%ptr) {
7; CHECK-LABEL: f1:
8; CHECK: algrk %r2, %r4, %r5
9; CHECK: alcgr
10; CHECK: br %r14
11  %x1 = insertelement <2 x i64> undef, i64 %b, i32 0
12  %x2 = insertelement <2 x i64> %x1, i64 %c, i32 1
13  %x = bitcast <2 x i64> %x2 to i128
14  %y2 = insertelement <2 x i64> %x1, i64 %d, i32 1
15  %y = bitcast <2 x i64> %y2 to i128
16  %add = add i128 %x, %y
17  %addv = bitcast i128 %add to <2 x i64>
18  %high = extractelement <2 x i64> %addv, i32 0
19  store i64 %high, i64 *%ptr
20  %low = extractelement <2 x i64> %addv, i32 1
21  ret i64 %low
22}
23
24; Test addition of 1.
25define void @f2(i64 %a, i64 %b, i128 *%ptr) {
26; CHECK-LABEL: f2:
27; CHECK: alghsik {{%r[0-5]}}, %r3, 1
28; CHECK: alcgr
29; CHECK: br %r14
30  %x1 = insertelement <2 x i64> undef, i64 %a, i32 0
31  %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
32  %x = bitcast <2 x i64> %x2 to i128
33  %add = add i128 %x, 1
34  store i128 %add, i128 *%ptr
35  ret void
36}
37
38; Test the upper end of the ALGHSIK range.
39define void @f3(i64 %a, i64 %b, i128 *%ptr) {
40; CHECK-LABEL: f3:
41; CHECK: alghsik {{%r[0-5]}}, %r3, 32767
42; CHECK: alcgr
43; CHECK: br %r14
44  %x1 = insertelement <2 x i64> undef, i64 %a, i32 0
45  %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
46  %x = bitcast <2 x i64> %x2 to i128
47  %add = add i128 %x, 32767
48  store i128 %add, i128 *%ptr
49  ret void
50}
51
52; Test the next value up, which should use ALGFI instead.
53define void @f4(i64 %a, i64 %b, i128 *%ptr) {
54; CHECK-LABEL: f4:
55; CHECK: algfi %r3, 32768
56; CHECK: alcgr
57; CHECK: br %r14
58  %x1 = insertelement <2 x i64> undef, i64 %a, i32 0
59  %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
60  %x = bitcast <2 x i64> %x2 to i128
61  %add = add i128 %x, 32768
62  store i128 %add, i128 *%ptr
63  ret void
64}
65
66; Test the lower end of the ALGHSIK range.
67define void @f5(i64 %a, i64 %b, i128 *%ptr) {
68; CHECK-LABEL: f5:
69; CHECK: alghsik {{%r[0-5]}}, %r3, -32768
70; CHECK: alcgr
71; CHECK: br %r14
72  %x1 = insertelement <2 x i64> undef, i64 %a, i32 0
73  %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
74  %x = bitcast <2 x i64> %x2 to i128
75  %add = add i128 %x, -32768
76  store i128 %add, i128 *%ptr
77  ret void
78}
79
80; Test the next value down, which cannot use either ALGHSIK or ALGFI.
81define void @f6(i64 %a, i64 %b, i128 *%ptr) {
82; CHECK-LABEL: f6:
83; CHECK-NOT: alghsik
84; CHECK-NOT: algfi
85; CHECK: alcgr
86; CHECK: br %r14
87  %x1 = insertelement <2 x i64> undef, i64 %a, i32 0
88  %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
89  %x = bitcast <2 x i64> %x2 to i128
90  %add = add i128 %x, -32769
91  store i128 %add, i128 *%ptr
92  ret void
93}
94