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| # REQUIRES: x86
## Testcase checks that we correctly deduplicate FDEs when ICF
## merges two sections.
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: ld.lld %t -o %t2 --icf=all --eh-frame-hdr
# RUN: llvm-readobj -r %t | FileCheck %s --check-prefix=OBJ
# RUN: llvm-readobj -S --section-data %t2 | FileCheck %s
# OBJ: Relocations [
# OBJ-NEXT: Section {{.*}} .rela.eh_frame {
# OBJ-NEXT: 0x20 R_X86_64_PC32 .text.f1 0x0
# OBJ-NEXT: 0x34 R_X86_64_PC32 .text.f1 0x2
# OBJ-NEXT: 0x48 R_X86_64_PC32 .text.f2 0x0
# OBJ-NEXT: 0x5C R_X86_64_PC32 .text.f2 0x2
# OBJ-NEXT: }
# OBJ-NEXT: ]
# CHECK: Section {
# CHECK: Index: 1
# CHECK: Name: .eh_frame_hdr
# CHECK-NEXT: Type: SHT_PROGBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x200158
# CHECK-NEXT: Offset: 0x158
# CHECK-NEXT: Size: 28
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: SectionData (
# CHECK-NEXT: 0000: 011B033B 1C000000 02000000 6C100000
## ^ ^-- FDE(1) PC
## ^-- Number of FDEs
# CHECK-NEXT: 0010: 38000000 6E100000 50000000
## ^-- FDE(2) PC
# CHECK-NEXT: )
# CHECK-NEXT: }
## FDE(1) == 0x201000 - .eh_frame_hdr(0x200158) = 0xEA8
## FDE(2) == 0x201000 - .eh_frame_hdr(0x200158) + 2(relocation addend) = 0xEAA
## Check .eh_frame contains CIE and two FDEs remaining after ICF.
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .eh_frame
# CHECK-NEXT: Type: SHT_PROGBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x200178
# CHECK-NEXT: Offset: 0x178
# CHECK-NEXT: Size: 76
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 8
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: SectionData (
# CHECK-NEXT: 0000: 14000000 00000000 017A5200 01781001
# CHECK-NEXT: 0010: 1B0C0708 90010000 14000000 1C000000
# CHECK-NEXT: 0020: 2C100000 01000000 00000000 00000000
# CHECK-NEXT: 0030: 14000000 34000000 16100000 01000000
# CHECK-NEXT: 0040: 00000000 00000000 00000000
# CHECK-NEXT: )
# CHECK-NEXT: }
# CHECK: Section {
# CHECK: Index:
# CHECK: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_EXECINSTR
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x2011C4
.section .text.f1, "ax"
.cfi_startproc
nop
.cfi_endproc
nop
.cfi_startproc
ret
.cfi_endproc
.section .text.f2, "ax"
.cfi_startproc
nop
.cfi_endproc
nop
.cfi_startproc
ret
.cfi_endproc
|