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
|
; Test that we take advantage of signext and zeroext annotations.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Zero extension of something that is already zero-extended.
define void @f1(i32 zeroext %r2, ptr %r3) {
; CHECK-LABEL: f1:
; CHECK-NOT: %r2
; CHECK: stg %r2, 0(%r3)
; CHECK: br %r14
%conv = zext i32 %r2 to i64
store i64 %conv, ptr %r3
ret void
}
; Sign extension of something that is already sign-extended.
define void @f2(i32 signext %r2, ptr %r3) {
; CHECK-LABEL: f2:
; CHECK-NOT: %r2
; CHECK: stg %r2, 0(%r3)
; CHECK: br %r14
%conv = sext i32 %r2 to i64
store i64 %conv, ptr %r3
ret void
}
; Sign extension of something that is already zero-extended.
define void @f3(i32 zeroext %r2, ptr %r3) {
; CHECK-LABEL: f3:
; CHECK: lgfr [[REGISTER:%r[0-5]+]], %r2
; CHECK: stg [[REGISTER]], 0(%r3)
; CHECK: br %r14
%conv = sext i32 %r2 to i64
store i64 %conv, ptr %r3
ret void
}
; Zero extension of something that is already sign-extended.
define void @f4(i32 signext %r2, ptr %r3) {
; CHECK-LABEL: f4:
; CHECK: llgfr [[REGISTER:%r[0-5]+]], %r2
; CHECK: stg [[REGISTER]], 0(%r3)
; CHECK: br %r14
%conv = zext i32 %r2 to i64
store i64 %conv, ptr %r3
ret void
}
|
