1# REQUIRES: x86
2
3## Testcase checks that we correctly deduplicate FDEs when ICF
4## merges two sections.
5
6# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
7# RUN: ld.lld %t -o %t2 --icf=all --eh-frame-hdr
8# RUN: llvm-readobj -r %t | FileCheck %s --check-prefix=OBJ
9# RUN: llvm-readobj -S --section-data %t2 | FileCheck %s
10
11# OBJ:      Relocations [
12# OBJ-NEXT:   Section {{.*}} .rela.eh_frame {
13# OBJ-NEXT:     0x20 R_X86_64_PC32 .text.f1 0x0
14# OBJ-NEXT:     0x34 R_X86_64_PC32 .text.f1 0x2
15# OBJ-NEXT:     0x48 R_X86_64_PC32 .text.f2 0x0
16# OBJ-NEXT:     0x5C R_X86_64_PC32 .text.f2 0x2
17# OBJ-NEXT:   }
18# OBJ-NEXT: ]
19
20# CHECK:      Section {
21# CHECK:        Index: 1
22# CHECK:        Name: .eh_frame_hdr
23# CHECK-NEXT:   Type: SHT_PROGBITS
24# CHECK-NEXT:   Flags [
25# CHECK-NEXT:     SHF_ALLOC
26# CHECK-NEXT:   ]
27# CHECK-NEXT:   Address: 0x200158
28# CHECK-NEXT:   Offset: 0x158
29# CHECK-NEXT:   Size: 28
30# CHECK-NEXT:   Link: 0
31# CHECK-NEXT:   Info: 0
32# CHECK-NEXT:   AddressAlignment:
33# CHECK-NEXT:   EntrySize: 0
34# CHECK-NEXT:   SectionData (
35# CHECK-NEXT:     0000: 011B033B 1C000000 02000000 6C100000
36##                               ^        ^-- FDE(1) PC
37##                               ^-- Number of FDEs
38# CHECK-NEXT:     0010: 38000000 6E100000 50000000
39##                               ^-- FDE(2) PC
40# CHECK-NEXT:   )
41# CHECK-NEXT: }
42## FDE(1) == 0x201000 - .eh_frame_hdr(0x200158) = 0xEA8
43## FDE(2) == 0x201000 - .eh_frame_hdr(0x200158) + 2(relocation addend) = 0xEAA
44
45## Check .eh_frame contains CIE and two FDEs remaining after ICF.
46# CHECK-NEXT: Section {
47# CHECK-NEXT:   Index: 2
48# CHECK-NEXT:   Name: .eh_frame
49# CHECK-NEXT:   Type: SHT_PROGBITS
50# CHECK-NEXT:   Flags [
51# CHECK-NEXT:     SHF_ALLOC
52# CHECK-NEXT:   ]
53# CHECK-NEXT:   Address: 0x200178
54# CHECK-NEXT:   Offset: 0x178
55# CHECK-NEXT:   Size: 76
56# CHECK-NEXT:   Link: 0
57# CHECK-NEXT:   Info: 0
58# CHECK-NEXT:   AddressAlignment: 8
59# CHECK-NEXT:   EntrySize: 0
60# CHECK-NEXT:   SectionData (
61# CHECK-NEXT:     0000: 14000000 00000000 017A5200 01781001
62# CHECK-NEXT:     0010: 1B0C0708 90010000 14000000 1C000000
63# CHECK-NEXT:     0020: 2C100000 01000000 00000000 00000000
64# CHECK-NEXT:     0030: 14000000 34000000 16100000 01000000
65# CHECK-NEXT:     0040: 00000000 00000000 00000000
66# CHECK-NEXT:   )
67# CHECK-NEXT: }
68
69# CHECK:     Section {
70# CHECK:       Index:
71# CHECK:       Name: .text
72# CHECK-NEXT:  Type: SHT_PROGBITS
73# CHECK-NEXT:  Flags [
74# CHECK-NEXT:    SHF_ALLOC
75# CHECK-NEXT:    SHF_EXECINSTR
76# CHECK-NEXT:  ]
77# CHECK-NEXT:  Address: 0x2011C4
78
79.section .text.f1, "ax"
80.cfi_startproc
81nop
82.cfi_endproc
83nop
84.cfi_startproc
85ret
86.cfi_endproc
87
88.section .text.f2, "ax"
89.cfi_startproc
90nop
91.cfi_endproc
92nop
93.cfi_startproc
94ret
95.cfi_endproc
96