1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
; Test strcmp using CLST, i64 version.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare i64 @strcmp(i8 *%src1, i8 *%src2)
; Check a case where the result is used as an integer.
define i64 @f1(i8 *%src1, i8 *%src2) {
; CHECK-LABEL: f1:
; CHECK: lhi %r0, 0
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: clst %r2, %r3
; CHECK-NEXT: jo [[LABEL]]
; CHECK-NEXT: BB#{{[0-9]+}}
; CHECK-NEXT: ipm [[REG:%r[0-5]]]
; CHECK: srl [[REG]], 28
; CHECK: rll [[REG]], [[REG]], 31
; CHECK: lgfr %r2, [[REG]]
; CHECK: br %r14
%res = call i64 @strcmp(i8 *%src1, i8 *%src2)
ret i64 %res
}
; Check a case where the result is tested for equality.
define void @f2(i8 *%src1, i8 *%src2, i64 *%dest) {
; CHECK-LABEL: f2:
; CHECK: lhi %r0, 0
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: clst %r2, %r3
; CHECK-NEXT: jo [[LABEL]]
; CHECK-NEXT: BB#{{[0-9]+}}
; CHECK-NEXT: je {{\.L.*}}
; CHECK: br %r14
%res = call i64 @strcmp(i8 *%src1, i8 *%src2)
%cmp = icmp eq i64 %res, 0
br i1 %cmp, label %exit, label %store
store:
store i64 0, i64 *%dest
br label %exit
exit:
ret void
}
; Test a case where the result is used both as an integer and for
; branching.
define i64 @f3(i8 *%src1, i8 *%src2, i64 *%dest) {
; CHECK-LABEL: f3:
; CHECK: lhi %r0, 0
; CHECK: [[LABEL:\.[^:]*]]:
; CHECK: clst %r2, %r3
; CHECK-NEXT: jo [[LABEL]]
; CHECK-NEXT: BB#{{[0-9]+}}
; CHECK-NEXT: ipm [[REG:%r[0-5]]]
; CHECK: srl [[REG]], 28
; CHECK: rll [[REG]], [[REG]], 31
; CHECK: lgfr %r2, [[REG]]
; CHECK: jl {{\.L*}}
; CHECK: br %r14
entry:
%res = call i64 @strcmp(i8 *%src1, i8 *%src2)
%cmp = icmp slt i64 %res, 0
br i1 %cmp, label %exit, label %store
store:
store i64 0, i64 *%dest
br label %exit
exit:
ret i64 %res
}
|
