frameaddr-02.ll
1.2 KB
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
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Test lowering of @llvm.frameaddress with packed-stack.
; With back chain
attributes #0 = { nounwind "packed-stack" "backchain" "use-soft-float"="true" }
define i8* @fp0() #0 {
entry:
; CHECK-LABEL: fp0:
; CHECK: la %r2, 152(%r15)
; CHECK-NEXT: br %r14
%0 = tail call i8* @llvm.frameaddress(i32 0)
ret i8* %0
}
define i8* @fp0f() #0 {
entry:
; CHECK-LABEL: fp0f:
; CHECK: lgr %r1, %r15
; CHECK-NEXT: aghi %r15, -16
; CHECK-NEXT: stg %r1, 152(%r15)
; CHECK-NEXT: la %r2, 168(%r15)
; CHECK-NEXT: aghi %r15, 16
; CHECK-NEXT: br %r14
%0 = alloca i64, align 8
%1 = tail call i8* @llvm.frameaddress(i32 0)
ret i8* %1
}
; Without back chain
attributes #1 = { nounwind "packed-stack" }
define i8* @fp1() #1 {
entry:
; CHECK-LABEL: fp1:
; CHECK: lghi %r2, 0
; CHECK-NEXT: br %r14
%0 = tail call i8* @llvm.frameaddress(i32 0)
ret i8* %0
}
define i8* @fp1f() #1 {
entry:
; CHECK-LABEL: fp1f:
; CHECK: aghi %r15, -8
; CHECK-NEXT: lghi %r2, 0
; CHECK-NEXT: aghi %r15, 8
; CHECK-NEXT: br %r14
%0 = alloca i64, align 8
%1 = tail call i8* @llvm.frameaddress(i32 0)
ret i8* %1
}
declare i8* @llvm.frameaddress(i32) nounwind readnone