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
|
# RUN: llvm-mc %s -filetype obj -triple x86_64-linux-elf -o %t.o
# RUN: not llvm-cfi-verify %t.o 2>&1 | FileCheck %s
# CHECK: DWARF line information missing. Did you compile with '-g'?
# Source (tiny.cc):
# void a() {}
# void b() {}
# int main(int argc, char** argv) {
# void(*ptr)();
# if (argc == 1)
# ptr = &a;
# else
# ptr = &b;
# ptr();
# }
# Compile with:
# clang++ tiny.cc -S -o tiny.s
.text
.file "tiny.cc"
.globl _Z1av # -- Begin function _Z1av
.p2align 4, 0x90
.type _Z1av,@function
_Z1av: # @_Z1av
.cfi_startproc
# BB#0:
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
popq %rbp
retq
.Lfunc_end0:
.size _Z1av, .Lfunc_end0-_Z1av
.cfi_endproc
# -- End function
.globl _Z1bv # -- Begin function _Z1bv
.p2align 4, 0x90
.type _Z1bv,@function
_Z1bv: # @_Z1bv
.cfi_startproc
# BB#0:
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
popq %rbp
retq
.Lfunc_end1:
.size _Z1bv, .Lfunc_end1-_Z1bv
.cfi_endproc
# -- End function
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.cfi_startproc
# BB#0:
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
subq $32, %rsp
movl $0, -4(%rbp)
movl %edi, -8(%rbp)
movq %rsi, -16(%rbp)
cmpl $1, -8(%rbp)
jne .LBB2_2
# BB#1:
movabsq $_Z1av, %rax
movq %rax, -24(%rbp)
jmp .LBB2_3
.LBB2_2:
movabsq $_Z1bv, %rax
movq %rax, -24(%rbp)
.LBB2_3:
callq *-24(%rbp)
movl -4(%rbp), %eax
addq $32, %rsp
popq %rbp
retq
.Lfunc_end2:
.size main, .Lfunc_end2-main
.cfi_endproc
# -- End function
.ident "clang version 6.0.0 (trunk 316774)"
.section ".note.GNU-stack","",@progbits
|
