1 ; Test strcmp using CLST, i64 version.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 declare i64 @strcmp(i8 *%src1, i8 *%src2)
7 ; Check a case where the result is used as an integer.
8 define i64 @f1(i8 *%src1, i8 *%src2) {
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 [[REG]], [[REG]], 31
18 ; CHECK: lgfr %r2, [[REG]]
20 %res = call i64 @strcmp(i8 *%src1, i8 *%src2)
24 ; Check a case where the result is tested for equality.
25 define void @f2(i8 *%src1, i8 *%src2, i64 *%dest) {
28 ; CHECK: [[LABEL:\.[^:]*]]:
29 ; CHECK: clst %r2, %r3
30 ; CHECK-NEXT: jo [[LABEL]]
31 ; CHECK-NEXT: BB#{{[0-9]+}}
32 ; CHECK-NEXT: je {{\.L.*}}
34 %res = call i64 @strcmp(i8 *%src1, i8 *%src2)
35 %cmp = icmp eq i64 %res, 0
36 br i1 %cmp, label %exit, label %store
39 store i64 0, i64 *%dest
46 ; Test a case where the result is used both as an integer and for
48 define i64 @f3(i8 *%src1, i8 *%src2, i64 *%dest) {
51 ; CHECK: [[LABEL:\.[^:]*]]:
52 ; CHECK: clst %r2, %r3
53 ; CHECK-NEXT: jo [[LABEL]]
54 ; CHECK-NEXT: BB#{{[0-9]+}}
55 ; CHECK-NEXT: ipm [[REG:%r[0-5]]]
56 ; CHECK: srl [[REG]], 28
57 ; CHECK: rll [[REG]], [[REG]], 31
58 ; CHECK: lgfr %r2, [[REG]]
62 %res = call i64 @strcmp(i8 *%src1, i8 *%src2)
63 %cmp = icmp slt i64 %res, 0
64 br i1 %cmp, label %exit, label %store
67 store i64 0, i64 *%dest