File: dead-reloc-in-nonalloc.s

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (69 lines) | stat: -rw-r--r-- 2,619 bytes parent folder | download | duplicates (13)
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
# REQUIRES: x86
## Test that -z dead-reloc-in-nonalloc= can customize the tombstone value we
## use for an absolute relocation referencing a discarded symbol.

# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
# RUN: ld.lld --icf=all -z dead-reloc-in-nonalloc=.debug_info=0xaaaaaaaa \
# RUN:   -z dead-reloc-in-nonalloc=.not_debug=0xbbbbbbbb %t.o -o %t
# RUN: llvm-objdump -s %t | FileCheck %s --check-prefixes=COMMON,AA
## 0xaaaaaaaa == 2863311530
# RUN: ld.lld --icf=all -z dead-reloc-in-nonalloc=.debug_info=2863311530 \
# RUN:   -z dead-reloc-in-nonalloc=.not_debug=0xbbbbbbbb %t.o -o - | cmp %t -

# COMMON:      Contents of section .debug_addr:
# COMMON-NEXT:  0000 [[ADDR:[0-9a-f]+]] 00000000 00000000 00000000

# AA:          Contents of section .debug_info:
# AA-NEXT:      0000 [[ADDR]] 00000000 aaaaaaaa 00000000
# AA:          Contents of section .not_debug:
# AA-NEXT:      0000 bbbbbbbb

## Specifying zero can get a behavior similar to GNU ld.
# RUN: ld.lld --icf=all -z dead-reloc-in-nonalloc=.debug_info=0 %t.o -o %tzero
# RUN: llvm-objdump -s %tzero | FileCheck %s --check-prefixes=COMMON,ZERO

# ZERO:        Contents of section .debug_info:
# ZERO-NEXT:    0000 {{[0-9a-f]+}}000 00000000 00000000 00000000

## Glob works.
# RUN: ld.lld --icf=all -z dead-reloc-in-nonalloc='.debug_i*=0xaaaaaaaa' \
# RUN:   -z dead-reloc-in-nonalloc='[.]not_debug=0xbbbbbbbb' %t.o -o - | cmp %t -

## If a section matches multiple option. The last option wins.
# RUN: ld.lld --icf=all -z dead-reloc-in-nonalloc='.debug_info=1' \
# RUN:   -z dead-reloc-in-nonalloc='.debug_i*=0' %t.o -o - | cmp %tzero -

## Test all possible invalid cases.
# RUN: not ld.lld -z dead-reloc-in-nonalloc= 2>&1 | FileCheck %s --check-prefix=USAGE
# RUN: not ld.lld -z dead-reloc-in-nonalloc=a= 2>&1 | FileCheck %s --check-prefix=USAGE
# RUN: not ld.lld -z dead-reloc-in-nonalloc==0 2>&1 | FileCheck %s --check-prefix=USAGE

# USAGE: error: -z dead-reloc-in-nonalloc=: expected <section_glob>=<value>

# RUN: not ld.lld -z dead-reloc-in-nonalloc=a=-1 2>&1 | FileCheck %s --check-prefix=NON-INTEGER

# NON-INTEGER: error: -z dead-reloc-in-nonalloc=: expected a non-negative integer, but got '-1'

# RUN: not ld.lld -z dead-reloc-in-nonalloc='['=0 2>&1 | FileCheck %s --check-prefix=INVALID

# INVALID: error: -z dead-reloc-in-nonalloc=: invalid glob pattern: [

.globl _start
_start:
  ret

## .text.1 will be folded by ICF.
.section .text.1,"ax"
  ret

.section .debug_addr
  .quad .text+8
  .quad .text.1+8

.section .debug_info
  .quad .text+8
  .quad .text.1+8

## Test a non-.debug_ section.
.section .not_debug
  .long .text.1+8