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
88
89
90
91
92
| // REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/comdat.s -o %t2.o
// RUN: ld.lld -shared %t.o %t2.o -o %t
// RUN: llvm-objdump -d %t | FileCheck %s
// RUN: llvm-readobj -S --symbols %t | FileCheck --check-prefix=READ %s
// Check that we don't crash with --gc-section and that we print a list of
// reclaimed sections on stderr.
// RUN: ld.lld --gc-sections --print-gc-sections -shared %t.o %t.o %t2.o -o %t \
// RUN: 2>&1 | FileCheck --check-prefix=GC %s
// GC: removing unused section {{.*}}.o:(.text)
// GC: removing unused section {{.*}}.o:(.text3)
// GC: removing unused section {{.*}}.o:(.text)
// GC: removing unused section {{.*}}.o:(.text)
.section .text2,"axG",@progbits,foo,comdat,unique,0
foo:
nop
// CHECK: Disassembly of section .text2:
// CHECK-EMPTY:
// CHECK-NEXT: foo:
// CHECK-NEXT: 1234: {{.*}} nop
// CHECK-NOT: nop
.section bar, "ax"
call foo
// CHECK: Disassembly of section bar:
// CHECK-EMPTY:
// CHECK-NEXT: bar:
// 0x1234 - 0x1235 - 5 = -6
// CHECK-NEXT: 1235: {{.*}} callq -6
.section .text3,"axG",@progbits,zed,comdat,unique,0
// READ: Name: .text2
// READ-NEXT: Type: SHT_PROGBITS
// READ-NEXT: Flags [
// READ-NEXT: SHF_ALLOC
// READ-NEXT: SHF_EXECINSTR
// READ-NEXT: ]
// READ: Name: .text3
// READ-NEXT: Type: SHT_PROGBITS
// READ-NEXT: Flags [
// READ-NEXT: SHF_ALLOC
// READ-NEXT: SHF_EXECINSTR
// READ-NEXT: ]
// READ: Symbols [
// READ-NEXT: Symbol {
// READ-NEXT: Name: (0)
// READ-NEXT: Value: 0x0
// READ-NEXT: Size: 0
// READ-NEXT: Binding: Local
// READ-NEXT: Type: None
// READ-NEXT: Other: 0
// READ-NEXT: Section: Undefined
// READ-NEXT: }
// READ-NEXT: Symbol {
// READ-NEXT: Name: foo
// READ-NEXT: Value
// READ-NEXT: Size: 0
// READ-NEXT: Binding: Local
// READ-NEXT: Type: None
// READ-NEXT: Other: 0
// READ-NEXT: Section: .text
// READ-NEXT: }
// READ-NEXT: Symbol {
// READ-NEXT: Name: _DYNAMIC
// READ-NEXT: Value: 0x2240
// READ-NEXT: Size: 0
// READ-NEXT: Binding: Local
// READ-NEXT: Type: None
// READ-NEXT: Other [ (0x2)
// READ-NEXT: STV_HIDDEN
// READ-NEXT: ]
// READ-NEXT: Section: .dynamic
// READ-NEXT: }
// READ-NEXT: Symbol {
// READ-NEXT: Name: abc
// READ-NEXT: Value: 0x0
// READ-NEXT: Size: 0
// READ-NEXT: Binding: Global
// READ-NEXT: Type: None
// READ-NEXT: Other: 0
// READ-NEXT: Section: Undefined
// READ-NEXT: }
// READ-NEXT: ]
|