Mercurial > hg > CbC > CbC_llvm

comparison lld/test/COFF/gfids-icf.s @ 150:1d019706d866

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
parents
children 2e18cbf3894f
comparison
equal deleted inserted replaced
147:c2174574ed3a 150:1d019706d866
1 # REQUIRES: x86
2 # RUN: llvm-mc -triple x86_64-windows-msvc %s -filetype=obj -o %t.obj
3 # RUN: lld-link %t.obj -guard:nolongjmp -out:%t.exe -opt:icf -entry:main
4 # RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK
5
6 # This assembly is meant to mimic what CL emits for this kind of C code:
7 # int icf1() { return 42; }
8 # int icf2() { return 42; }
9 # int (*fp1)() = &icf1;
10 # int (*fp2)() = &icf2;
11 # int main() {
12 # return fp1();
13 # return fp2();
14 # }
15
16 # 'icf1' and 'icf2' are address taken, but should be merged into one entry.
17 # There are two entries in the table because 'main' is included.
18
19 # CHECK: ImageBase: 0x140000000
20 # CHECK: LoadConfig [
21 # CHECK: SEHandlerTable: 0x0
22 # CHECK: SEHandlerCount: 0
23 # CHECK: GuardCFCheckFunction: 0x0
24 # CHECK: GuardCFCheckDispatch: 0x0
25 # CHECK: GuardCFFunctionTable: 0x14000{{.*}}
26 # CHECK: GuardCFFunctionCount: 2
27 # CHECK: GuardFlags: 0x500
28 # CHECK: GuardAddressTakenIatEntryTable: 0x0
29 # CHECK: GuardAddressTakenIatEntryCount: 0
30 # CHECK: GuardLongJumpTargetTable: 0x0
31 # CHECK: GuardLongJumpTargetCount: 0
32 # CHECK: ]
33 # CHECK: GuardFidTable [
34 # CHECK-NEXT: 0x14000{{.*}}
35 # CHECK-NEXT: 0x14000{{.*}}
36 # CHECK-NEXT: ]
37
38 # There should be no .gfids section in the output exectuable when we link with
39 # -guard:cf or with no -guard:cf/nolongjmp flag.
40 # RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
41 # RUN: lld-link %t.obj -out:%t.exe -opt:icf -entry:main
42 # RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
43
44 # NOGFIDSEC: Sections [
45 # NOGFIDSEC: Section {
46 # NOGFIDSEC: Name: .text
47 # NOGFIDSEC-NOT: Name: .gfids
48
49 # Indicate that gfids are present.
50 .def @feat.00; .scl 3; .type 0; .endef
51 .globl @feat.00
52 @feat.00 = 0x800
53
54 .def icf1; .scl 2; .type 32; .endef
55 .section .text,"xr",one_only,icf1
56 .global icf1
57 icf1:
58 movl $42, %eax
59 retq
60
61 .def icf2; .scl 2; .type 32; .endef
62 .section .text,"xr",one_only,icf2
63 .global icf2
64 icf2:
65 movl $42, %eax
66 retq
67
68 # Take their two addresses.
69 .data
70 .globl fp1
71 fp1:
72 .quad icf1
73 .globl fp2
74 fp2:
75 .quad icf2
76
77 .section .gfids$y,"dr"
78 .symidx icf1
79 .symidx icf2
80
81 .def main; .scl 2; .type 32; .endef
82 .section .text,"xr",one_only,main
83 .globl main
84 main:
85 callq *fp1(%rip)
86 callq *fp2(%rip)
87 xor %eax, %eax
88 retq
89
90 .section .rdata,"dr"
91 .globl _load_config_used
92 _load_config_used:
93 .long 256
94 .fill 124, 1, 0
95 .quad __guard_fids_table
96 .quad __guard_fids_count
97 .long __guard_flags
98 .fill 128, 1, 0