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1; Make sure that the alloca offset isn't lost when the alloca result is
2; used directly in a load or store.  There must always be an LA or LAY.
3;
4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-A
5; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-B
6; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-C
7; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-D
8
9declare i64 @bar(i8 *%a)
10
11define i64 @f1(i64 %length, i64 %index) {
12; CHECK-A-LABEL: f1:
13; CHECK-A: lgr %r15, [[ADDR:%r[1-5]]]
14; CHECK-A: la %r2, 160([[ADDR]])
15; CHECK-A: mvi 0(%r2), 0
16;
17; CHECK-B-LABEL: f1:
18; CHECK-B: lgr %r15, [[ADDR:%r[1-5]]]
19; CHECK-B: la %r2, 160([[ADDR]])
20; CHECK-B: mvi 4095(%r2), 1
21;
22; CHECK-C-LABEL: f1:
23; CHECK-C: lgr %r15, [[ADDR:%r[1-5]]]
24; CHECK-C-DAG: la %r2, 160([[ADDR]])
25; CHECK-C-DAG: lhi [[TMP:%r[0-5]]], 2
26; CHECK-C: stc [[TMP]], 0({{%r3,%r2|%r2,%r3}})
27;
28; CHECK-D-LABEL: f1:
29; CHECK-D: lgr %r15, [[ADDR:%r[1-5]]]
30; CHECK-D-DAG: la %r2, 160([[ADDR]])
31; CHECK-D-DAG: lhi [[TMP:%r[0-5]]], 3
32; CHECK-D: stc [[TMP]], 4095({{%r3,%r2|%r2,%r3}})
33;
34; CHECK-E-LABEL: f1:
35; CHECK-E: lgr %r15, [[ADDR:%r[1-5]]]
36; CHECK-E-DAG: la %r2, 160([[ADDR]])
37; CHECK-E-DAG: lhi [[TMP:%r[0-5]]], 4
38; CHECK-E: stcy [[TMP]], 4096({{%r3,%r2|%r2,%r3}})
39  %a = alloca i8, i64 %length
40  store volatile i8 0, i8 *%a
41  %b = getelementptr i8, i8 *%a, i64 4095
42  store volatile i8 1, i8 *%b
43  %c = getelementptr i8, i8 *%a, i64 %index
44  store volatile i8 2, i8 *%c
45  %d = getelementptr i8, i8 *%c, i64 4095
46  store volatile i8 3, i8 *%d
47  %e = getelementptr i8, i8 *%d, i64 1
48  store volatile i8 4, i8 *%e
49  %count = call i64 @bar(i8 *%a)
50  %res = add i64 %count, 1
51  ret i64 %res
52}
53