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
85
86
87
| ; RUN: llc -function-sections -mtriple=x86_64-windows-itanium < %s | FileCheck %s
; RUN: llc -function-sections -mtriple=x86_64-windows-msvc < %s | FileCheck %s
; RUN: llc -function-sections -mtriple=x86_64-w64-windows-gnu < %s | FileCheck %s --check-prefix=GNU
; RUN: llc -function-sections -mtriple=i686-w64-windows-gnu < %s | FileCheck %s --check-prefix=GNU32
; RUN: llc -function-sections -mtriple=x86_64-w64-windows-gnu < %s -filetype=obj | llvm-objdump - -headers | FileCheck %s --check-prefix=GNUOBJ
; GCC and MSVC handle comdats completely differently. Make sure we do the right
; thing for each.
; Modeled on this C++ source, with additional modifications for
; -ffunction-sections:
; int bar(int);
; __declspec(selectany) int gv = 42;
; inline int foo(int x) { return bar(x) + gv; }
; int main() { return foo(1); }
$_Z3fooi = comdat any
$gv = comdat any
@gv = weak_odr dso_local global i32 42, comdat, align 4
; Function Attrs: norecurse uwtable
define dso_local i32 @main() #0 {
entry:
%call = tail call i32 @_Z3fooi(i32 1)
ret i32 %call
}
; CHECK: .section .text,"xr",one_only,main
; CHECK: main:
; GNU: .section .text$main,"xr",one_only,main
; GNU: main:
; GNU32: .section .text$main,"xr",one_only,_main
; GNU32: _main:
define dso_local x86_fastcallcc i32 @fastcall(i32 %x, i32 %y) {
%rv = add i32 %x, %y
ret i32 %rv
}
; CHECK: .section .text,"xr",one_only,fastcall
; CHECK: fastcall:
; GNU: .section .text$fastcall,"xr",one_only,fastcall
; GNU: fastcall:
; GNU32: .section .text$fastcall,"xr",one_only,@fastcall@8
; GNU32: @fastcall@8:
; Function Attrs: inlinehint uwtable
define linkonce_odr dso_local i32 @_Z3fooi(i32 %x) #1 comdat {
entry:
%call = tail call i32 @_Z3bari(i32 %x)
%0 = load i32, i32* @gv, align 4
%add = add nsw i32 %0, %call
ret i32 %add
}
; CHECK: .section .text,"xr",discard,_Z3fooi
; CHECK: _Z3fooi:
; CHECK: .section .data,"dw",discard,gv
; CHECK: gv:
; CHECK: .long 42
; GNU: .section .text$_Z3fooi,"xr",discard,_Z3fooi
; GNU: _Z3fooi:
; GNU: .section .data$gv,"dw",discard,gv
; GNU: gv:
; GNU: .long 42
; GNU32: .section .text$_Z3fooi,"xr",discard,__Z3fooi
; GNU32: __Z3fooi:
; GNU32: .section .data$gv,"dw",discard,_gv
; GNU32: _gv:
; GNU32: .long 42
; Make sure the assembler puts the .xdata and .pdata in sections with the right
; names.
; GNUOBJ: .text$_Z3fooi
; GNUOBJ: .xdata$_Z3fooi
; GNUOBJ: .data$gv
; GNUOBJ: .pdata$_Z3fooi
declare dso_local i32 @_Z3bari(i32)
attributes #0 = { norecurse uwtable }
attributes #1 = { inlinehint uwtable }
|