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comparison test/CodeGen/SystemZ/alloca-01.ll @ 0:95c75e76d11b

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children afa8332a0e37
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-1:000000000000 0:95c75e76d11b
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 -check-prefix=CHECK
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
11 declare 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 define i64 @f1(i64 %length, i64 %index) {
17 ; FIXME: a better sequence would be:
18 ;
19 ; lgr %r1, %r15
20 ; sgr %r1, %r2
21 ; nill %r1, 0xfff8
22 ; lgr %r15, %r1
23 ;
24 ; CHECK-LABEL: f1:
25 ; CHECK-DAG: la [[REG1:%r[0-5]]], 7(%r2)
26 ; CHECK-DAG: nill [[REG1]], 65528
27 ; CHECK-DAG: lgr [[REG2:%r[0-5]]], %r15
28 ; CHECK: sgr [[REG2]], [[REG1]]
29 ; CHECK: lgr %r15, [[REG2]]
30 ;
31 ; CHECK-A-LABEL: f1:
32 ; CHECK-A: lgr %r15, %r1
33 ; CHECK-A: la %r2, 176(%r1)
34 ;
35 ; CHECK-B-LABEL: f1:
36 ; CHECK-B: lgr %r15, %r1
37 ; CHECK-B: la %r3, 177(%r1)
38 ;
39 ; CHECK-C-LABEL: f1:
40 ; CHECK-C: lgr %r15, %r1
41 ; CHECK-C: la %r4, 4095({{%r3,%r1|%r1,%r3}})
42 ;
43 ; CHECK-D-LABEL: f1:
44 ; CHECK-D: lgr %r15, %r1
45 ; CHECK-D: lay %r5, 4096({{%r3,%r1|%r1,%r3}})
46 ;
47 ; CHECK-E-LABEL: f1:
48 ; CHECK-E: lgr %r15, %r1
49 ; CHECK-E: lay %r6, 4271({{%r3,%r1|%r1,%r3}})
50 ;
51 ; CHECK-FP-LABEL: f1:
52 ; CHECK-FP: lgr %r11, %r15
53 ; CHECK-FP: lmg %r6, %r15, 224(%r11)
54 %a = alloca i8, i64 %length
55 %b = getelementptr i8 *%a, i64 1
56 %cindex = add i64 %index, 3919
57 %c = getelementptr i8 *%a, i64 %cindex
58 %dindex = add i64 %index, 3920
59 %d = getelementptr i8 *%a, i64 %dindex
60 %eindex = add i64 %index, 4095
61 %e = getelementptr i8 *%a, i64 %eindex
62 %count = call i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 0, i64 0)
63 %res = add i64 %count, 1
64 ret i64 %res
65 }