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
|
; Test that strcmp won't be converted to MVST if calls are
; marked with nobuiltin, eg. for sanitizers.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare i8 *@strcpy(i8 *%dest, i8 *%src)
declare i8 *@stpcpy(i8 *%dest, i8 *%src)
; Check strcpy.
define i8 *@f1(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f1:
; CHECK-NOT: mvst
; CHECK: brasl %r14, strcpy
; CHECK: br %r14
%res = call i8 *@strcpy(i8 *%dest, i8 *%src) nobuiltin
ret i8 *%res
}
; Check stpcpy.
define i8 *@f2(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f2:
; CHECK-NOT: mvst
; CHECK: brasl %r14, stpcpy
; CHECK: br %r14
%res = call i8 *@stpcpy(i8 *%dest, i8 *%src) nobuiltin
ret i8 *%res
}
; Check correct operation with other loads and stores. The load must
; come before the loop and the store afterwards.
define i32 @f3(i32 %dummy, i8 *%dest, i8 *%src, i32 *%resptr, i32 *%storeptr) {
; CHECK-LABEL: f3:
; CHECK-DAG: l [[REG1:%r[0-9]+]], 0(%r5)
; CHECK-NOT: mvst
; CHECK: brasl %r14, strcpy
; CHECK: mvhi 0(%r6), 0
; CHECK: br %r14
%res = load i32 , i32 *%resptr
%unused = call i8 *@strcpy(i8 *%dest, i8 *%src) nobuiltin
store i32 0, i32 *%storeptr
ret i32 %res
}
|
