1; Test strcmp using CLST, i32 version.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5declare signext i32 @strcmp(i8 *%src1, i8 *%src2)
6
7; Check a case where the result is used as an integer.
8define i32 @f1(i8 *%src1, i8 *%src2) {
9; CHECK-LABEL: f1:
10; CHECK: lhi %r0, 0
11; CHECK: [[LABEL:\.[^:]*]]:
12; CHECK: clst %r2, %r3
13; CHECK-NEXT: jo [[LABEL]]
14; CHECK-NEXT: BB#{{[0-9]+}}
15; CHECK-NEXT: ipm [[REG:%r[0-5]]]
16; CHECK: srl [[REG]], 28
17; CHECK: rll %r2, [[REG]], 31
18; CHECK: br %r14
19  %res = call i32 @strcmp(i8 *%src1, i8 *%src2)
20  ret i32 %res
21}
22
23; Check a case where the result is tested for equality.
24define void @f2(i8 *%src1, i8 *%src2, i32 *%dest) {
25; CHECK-LABEL: f2:
26; CHECK: lhi %r0, 0
27; CHECK: [[LABEL:\.[^:]*]]:
28; CHECK: clst %r2, %r3
29; CHECK-NEXT: jo [[LABEL]]
30; CHECK-NEXT: BB#{{[0-9]+}}
31; CHECK-NEXT: je {{\.L.*}}
32; CHECK: br %r14
33  %res = call i32 @strcmp(i8 *%src1, i8 *%src2)
34  %cmp = icmp eq i32 %res, 0
35  br i1 %cmp, label %exit, label %store
36
37store:
38  store i32 0, i32 *%dest
39  br label %exit
40
41exit:
42  ret void
43}
44
45; Test a case where the result is used both as an integer and for
46; branching.
47define i32 @f3(i8 *%src1, i8 *%src2, i32 *%dest) {
48; CHECK-LABEL: f3:
49; CHECK: lhi %r0, 0
50; CHECK: [[LABEL:\.[^:]*]]:
51; CHECK: clst %r2, %r3
52; CHECK-NEXT: jo [[LABEL]]
53; CHECK-NEXT: BB#{{[0-9]+}}
54; CHECK-NEXT: ipm [[REG:%r[0-5]]]
55; CHECK: srl [[REG]], 28
56; CHECK: rll %r2, [[REG]], 31
57; CHECK: jl {{\.L*}}
58; CHECK: br %r14
59entry:
60  %res = call i32 @strcmp(i8 *%src1, i8 *%src2)
61  %cmp = icmp slt i32 %res, 0
62  br i1 %cmp, label %exit, label %store
63
64store:
65  store i32 0, i32 *%dest
66  br label %exit
67
68exit:
69  ret i32 %res
70}
71