1; Test multiplications between an i64 and a sign-extended i16 on z14.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
4
5declare i64 @foo()
6
7; Check MGH with no displacement.
8define i64 @f1(i64 %a, i16 *%src) {
9; CHECK-LABEL: f1:
10; CHECK: mgh %r2, 0(%r3)
11; CHECK: br %r14
12  %b = load i16, i16 *%src
13  %bext = sext i16 %b to i64
14  %mul = mul i64 %a, %bext
15  ret i64 %mul
16}
17
18; Check the high end of the aligned MGH range.
19define i64 @f2(i64 %a, i16 *%src) {
20; CHECK-LABEL: f2:
21; CHECK: mgh %r2, 524286(%r3)
22; CHECK: br %r14
23  %ptr = getelementptr i16, i16 *%src, i64 262143
24  %b = load i16, i16 *%ptr
25  %bext = sext i16 %b to i64
26  %mul = mul i64 %a, %bext
27  ret i64 %mul
28}
29
30; Check the next word up, which needs separate address logic.
31; Other sequences besides this one would be OK.
32define i64 @f3(i64 %a, i16 *%src) {
33; CHECK-LABEL: f3:
34; CHECK: agfi %r3, 524288
35; CHECK: mgh %r2, 0(%r3)
36; CHECK: br %r14
37  %ptr = getelementptr i16, i16 *%src, i64 262144
38  %b = load i16, i16 *%ptr
39  %bext = sext i16 %b to i64
40  %mul = mul i64 %a, %bext
41  ret i64 %mul
42}
43
44; Check the high end of the negative aligned MGH range.
45define i64 @f4(i64 %a, i16 *%src) {
46; CHECK-LABEL: f4:
47; CHECK: mgh %r2, -2(%r3)
48; CHECK: br %r14
49  %ptr = getelementptr i16, i16 *%src, i64 -1
50  %b = load i16, i16 *%ptr
51  %bext = sext i16 %b to i64
52  %mul = mul i64 %a, %bext
53  ret i64 %mul
54}
55
56; Check the low end of the MGH range.
57define i64 @f5(i64 %a, i16 *%src) {
58; CHECK-LABEL: f5:
59; CHECK: mgh %r2, -524288(%r3)
60; CHECK: br %r14
61  %ptr = getelementptr i16, i16 *%src, i64 -262144
62  %b = load i16, i16 *%ptr
63  %bext = sext i16 %b to i64
64  %mul = mul i64 %a, %bext
65  ret i64 %mul
66}
67
68; Check the next word down, which needs separate address logic.
69; Other sequences besides this one would be OK.
70define i64 @f6(i64 %a, i16 *%src) {
71; CHECK-LABEL: f6:
72; CHECK: agfi %r3, -524290
73; CHECK: mgh %r2, 0(%r3)
74; CHECK: br %r14
75  %ptr = getelementptr i16, i16 *%src, i64 -262145
76  %b = load i16, i16 *%ptr
77  %bext = sext i16 %b to i64
78  %mul = mul i64 %a, %bext
79  ret i64 %mul
80}
81
82; Check that MGH allows an index.
83define i64 @f7(i64 %a, i64 %src, i64 %index) {
84; CHECK-LABEL: f7:
85; CHECK: mgh %r2, 524284({{%r4,%r3|%r3,%r4}})
86; CHECK: br %r14
87  %add1 = add i64 %src, %index
88  %add2 = add i64 %add1, 524284
89  %ptr = inttoptr i64 %add2 to i16 *
90  %b = load i16, i16 *%ptr
91  %bext = sext i16 %b to i64
92  %mul = mul i64 %a, %bext
93  ret i64 %mul
94}
95
96