File: basic-block-sections-and-icf.s

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (47 lines) | stat: -rw-r--r-- 955 bytes parent folder | download | duplicates (21) 
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
 
# REQUIRES: x86
## basic-block-sections tests.
## This simple test checks foo is folded into bar with bb sections
## and the jumps are deleted.

# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
# RUN: ld.lld --optimize-bb-jumps --icf=all %t.o -o %t.out
# RUN: llvm-objdump -d %t.out| FileCheck %s

# CHECK:      <foo>:
# CHECK-NEXT:  nopl (%rax)
# CHECK-NEXT:  je 0x{{[[:xdigit:]]+}} <aa.BB.foo>
# CHECK-NOT:   jmp

# CHECK:     <a.BB.foo>:
## Explicity check that bar is folded and not emitted.
# CHECK-NOT: <bar>:
# CHECK-NOT: <a.BB.bar>:
# CHECK-NOT: <aa.BB.bar>:

.section	.text.bar,"ax",@progbits
.type	bar,@function
bar:
 nopl (%rax)
 jne	a.BB.bar
 jmp	aa.BB.bar

.section	.text.a.BB.bar,"ax",@progbits,unique,3
a.BB.bar:
 nopl (%rax)

aa.BB.bar:
 ret

.section	.text.foo,"ax",@progbits
.type	foo,@function
foo:
 nopl (%rax)
 jne	a.BB.foo
 jmp	aa.BB.foo

.section	.text.a.BB.foo,"ax",@progbits,unique,2
a.BB.foo:
 nopl (%rax)

aa.BB.foo:
 ret