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
|
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
# RUN: echo 'SECTIONS { .text : { *(.text*) } }' > %t1.script
## Sections within the same output section can be freely folded.
# RUN: ld.lld %t.o --script %t1.script --icf=all --print-icf-sections -o %t | FileCheck --check-prefix=ICF1 %s
# RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC1 %s --implicit-check-not=.text
# ICF1: selected section {{.*}}.o:(.text.foo0)
# ICF1-NEXT: removing identical section {{.*}}.o:(.text.foo1)
# ICF1-NEXT: removing identical section {{.*}}.o:(.text.bar0)
# ICF1-NEXT: removing identical section {{.*}}.o:(.text.bar1)
# SEC1: .text PROGBITS 0000000000000000 001000 000001
## Sections with different output sections cannot be folded. Without the
## linker script, .text.foo* and .text.bar* go to the same output section
## .text and they will be folded.
# RUN: echo 'SECTIONS { .text.foo : {*(.text.foo*)} .text.bar : {*(.text.bar*)} }' > %t2.script
# RUN: ld.lld %t.o --script %t2.script --icf=all --print-icf-sections -o %t | FileCheck --check-prefix=ICF2 %s
# RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC2 %s
# ICF2: selected section {{.*}}.o:(.text.foo0)
# ICF2-NEXT: removing identical section {{.*}}.o:(.text.foo1)
# ICF2-NEXT: selected section {{.*}}.o:(.text.bar0)
# ICF2-NEXT: removing identical section {{.*}}.o:(.text.bar1)
# SEC2: .text.foo PROGBITS 0000000000000000 001000 000001
# SEC2-NEXT: .text.bar PROGBITS 0000000000000001 001001 000001
## .text.bar* are orphan sections.
# RUN: echo 'SECTIONS { .text.foo : {*(.text.foo*)} }' > %t3.script
# RUN: ld.lld %t.o -T %t3.script --icf=all --print-icf-sections -o %t3 | FileCheck --check-prefix=ICF3 %s
# RUN: llvm-readelf -S %t3 | FileCheck --check-prefix=SEC3 %s
# ICF3: selected section {{.*}}.o:(.text.foo0)
# ICF3-NEXT: removing identical section {{.*}}.o:(.text.foo1)
# SEC3: Name Type Address Off Size
# SEC3: .text.foo PROGBITS 0000000000000000 001000 000001
# SEC3-NEXT: .text PROGBITS 0000000000000004 001004 000000
# SEC3-NEXT: .text.bar0 PROGBITS 0000000000000004 001004 000001
# SEC3-NEXT: .text.bar1 PROGBITS 0000000000000005 001005 000001
.section .text.foo0,"ax"
ret
.section .text.foo1,"ax"
ret
.section .text.bar0,"ax"
ret
.section .text.bar1,"ax"
ret
|
