1; Test variable-sized allocas and addresses based on them in cases where
2; stack arguments are needed.
3;
4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-A
6; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-B
7; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-C
8; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-D
9; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-FP
10
11declare i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 %f, i64 %g)
12
13; Allocate %length bytes and take addresses based on the result.
14; There are two stack arguments, so an offset of 160 + 2 * 8 == 176
15; is added to the copy of %r15.
16;
17; NOTE: 'la %r0, 177(%r1)' is actually an expected fail as it would
18; be better (and possible) to load into %r3 directly.
19;
20define i64 @f1(i64 %length, i64 %index) {
21; FIXME: a better sequence would be:
22;
23;    lgr %r1, %r15
24;    sgr %r1, %r2
25;    nill %r1, 0xfff8
26;    lgr %r15, %r1
27;
28; CHECK-LABEL: f1:
29; CHECK-DAG: la [[REG1:%r[0-5]]], 7(%r2)
30; CHECK-DAG: nill [[REG1]], 65528
31; CHECK-DAG: lgr [[REG2:%r[0-5]]], %r15
32; CHECK: sgr [[REG2]], [[REG1]]
33; CHECK: lgr %r15, [[REG2]]
34;
35; CHECK-A-LABEL: f1:
36; CHECK-A-DAG: lgr %r15, %r1
37; CHECK-A-DAG: la %r2, 176(%r1)
38;
39; CHECK-B-LABEL: f1:
40; CHECK-B: lgr %r15, %r1
41; CHECK-B: la %r0, 177(%r1)
42;
43; CHECK-C-LABEL: f1:
44; CHECK-C: lgr %r15, %r1
45; CHECK-C: la %r4, 4095({{%r3,%r1|%r1,%r3}})
46;
47; CHECK-D-LABEL: f1:
48; CHECK-D: lgr %r15, %r1
49; CHECK-D: lay %r5, 4096({{%r3,%r1|%r1,%r3}})
50;
51; CHECK-E-LABEL: f1:
52; CHECK-E: lgr %r15, %r1
53; CHECK-E: lay %r6, 4271({{%r3,%r1|%r1,%r3}})
54;
55; CHECK-FP-LABEL: f1:
56; CHECK-FP: lgr %r11, %r15
57; CHECK-FP: lmg %r6, %r15, 224(%r11)
58  %a = alloca i8, i64 %length
59  %b = getelementptr i8, i8 *%a, i64 1
60  %cindex = add i64 %index, 3919
61  %c = getelementptr i8, i8 *%a, i64 %cindex
62  %dindex = add i64 %index, 3920
63  %d = getelementptr i8, i8 *%a, i64 %dindex
64  %eindex = add i64 %index, 4095
65  %e = getelementptr i8, i8 *%a, i64 %eindex
66  %count = call i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 0, i64 0)
67  %res = add i64 %count, 1
68  ret i64 %res
69}
70