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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN32
; RUN: llc < %s -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X86
; RUN: llc < %s -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX
; RUN: llc < %s -O0 -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN32
; RUN: llc < %s -O0 -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X86
; RUN: llc < %s -O0 -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX
; The SysV ABI used by most Unixes and Mingw on x86 specifies that an sret pointer
; is callee-cleanup. However, in MSVC's cdecl calling convention, sret pointer
; arguments are caller-cleanup like normal arguments.
define void @sret1(i8* sret %x) nounwind {
entry:
; WIN32: sret1
; WIN32: movb $42, (%eax)
; WIN32-NOT: popl %eax
; WIN32: {{ret$}}
; MINGW_X86: sret1
; MINGW_X86: ret $4
; LINUX: sret1
; LINUX: ret $4
store i8 42, i8* %x, align 4
ret void
}
define void @sret2(i8* sret %x, i8 %y) nounwind {
entry:
; WIN32: sret2
; WIN32: movb {{.*}}, (%eax)
; WIN32-NOT: popl %eax
; WIN32: {{ret$}}
; MINGW_X86: sret2
; MINGW_X86: ret $4
; LINUX: sret2
; LINUX: ret $4
store i8 %y, i8* %x
ret void
}
define void @sret3(i8* sret %x, i8* %y) nounwind {
entry:
; WIN32: sret3
; WIN32: movb $42, (%eax)
; WIN32-NOT: movb $13, (%eax)
; WIN32-NOT: popl %eax
; WIN32: {{ret$}}
; MINGW_X86: sret3
; MINGW_X86: ret $4
; LINUX: sret3
; LINUX: ret $4
store i8 42, i8* %x
store i8 13, i8* %y
ret void
}
; PR15556
%struct.S4 = type { i32, i32, i32 }
define void @sret4(%struct.S4* noalias sret %agg.result) {
entry:
; WIN32: sret4
; WIN32: movl $42, (%eax)
; WIN32-NOT: popl %eax
; WIN32: {{ret$}}
; MINGW_X86: sret4
; MINGW_X86: ret $4
; LINUX: sret4
; LINUX: ret $4
%x = getelementptr inbounds %struct.S4* %agg.result, i32 0, i32 0
store i32 42, i32* %x, align 4
ret void
}
|
