maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/lld/test/ELF/icf-merged-sections.s

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

38 lines
1011 B
ArmAsm
Raw Normal View History

Add a minimal fix for PR36878. When looking for the output section and the output offset the expectation was that the caller had looked at Repl. That works fine for InputSections, but in the case of MergeInputSections the caller doesn't have the section that is actually replaced. The original testcase was failing because getOutputSection was returning null. The slightly extended testcase also checks that getOffset also checks Repl. I will send a refactoring separetelly. llvm-svn: 328332
2018-03-24 01:19:18 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
[ELF] Disable ICF for synthetic sections The Data member of synthetic section's is not valid and empty. The Data member is required to be valid by ICF as it is used by ICF to determine the equality of section contents. Therefore, exclude synthetic sections from ICF. Fixes bug PR36910. Differential Revision: https://reviews.llvm.org/D44923 llvm-svn: 328624
2018-03-27 22:10:07 +08:00
# RUN: ld.lld %t.o -o %t --icf=all --ignore-data-address-equality --print-icf-sections | FileCheck -allow-empty --check-prefix=NOICF %s
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
# RUN: llvm-readobj -S --section-data %t | FileCheck %s
Add a minimal fix for PR36878. When looking for the output section and the output offset the expectation was that the caller had looked at Repl. That works fine for InputSections, but in the case of MergeInputSections the caller doesn't have the section that is actually replaced. The original testcase was failing because getOutputSection was returning null. The slightly extended testcase also checks that getOffset also checks Repl. I will send a refactoring separetelly. llvm-svn: 328332
2018-03-24 01:19:18 +08:00
[ELF] Disable ICF for synthetic sections The Data member of synthetic section's is not valid and empty. The Data member is required to be valid by ICF as it is used by ICF to determine the equality of section contents. Therefore, exclude synthetic sections from ICF. Fixes bug PR36910. Differential Revision: https://reviews.llvm.org/D44923 llvm-svn: 328624
2018-03-27 22:10:07 +08:00
# Check that merge synthetic sections are not merged by ICF.
Add a minimal fix for PR36878. When looking for the output section and the output offset the expectation was that the caller had looked at Repl. That works fine for InputSections, but in the case of MergeInputSections the caller doesn't have the section that is actually replaced. The original testcase was failing because getOutputSection was returning null. The slightly extended testcase also checks that getOffset also checks Repl. I will send a refactoring separetelly. llvm-svn: 328332
2018-03-24 01:19:18 +08:00
[ELF] Disable ICF for synthetic sections The Data member of synthetic section's is not valid and empty. The Data member is required to be valid by ICF as it is used by ICF to determine the equality of section contents. Therefore, exclude synthetic sections from ICF. Fixes bug PR36910. Differential Revision: https://reviews.llvm.org/D44923 llvm-svn: 328624
2018-03-27 22:10:07 +08:00
# NOICF-NOT: selected section <internal>:(.rodata)
Add a minimal fix for PR36878. When looking for the output section and the output offset the expectation was that the caller had looked at Repl. That works fine for InputSections, but in the case of MergeInputSections the caller doesn't have the section that is actually replaced. The original testcase was failing because getOutputSection was returning null. The slightly extended testcase also checks that getOffset also checks Repl. I will send a refactoring separetelly. llvm-svn: 328332
2018-03-24 01:19:18 +08:00
[ELF] Disable ICF for synthetic sections The Data member of synthetic section's is not valid and empty. The Data member is required to be valid by ICF as it is used by ICF to determine the equality of section contents. Therefore, exclude synthetic sections from ICF. Fixes bug PR36910. Differential Revision: https://reviews.llvm.org/D44923 llvm-svn: 328624
2018-03-27 22:10:07 +08:00
# CHECK: Name: .rodata
# CHECK-NEXT: Type: SHT_PROGBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_MERGE
# CHECK-NEXT: ]
# CHECK-NEXT: Address:
# CHECK-NEXT: Offset:
# CHECK-NEXT: Size: 16
# CHECK-NEXT: Link:
# CHECK-NEXT: Info:
[ELF] Allow sh_entsize to be unrelated to sh_addralign and not a power of 2 Summary: This implements Rui Ueyama's idea in PR39044. I've checked that ld.bfd and gold do not have the power-of-2 requirement and do not require sh_entsize to be a multiple of sh_align. Now on the updated test merge-entsize.s, all the 3 linkers happily create .rodata that is not 3-byte aligned. This has a use case in Linux arch/x86/crypto/sha512-avx2-asm.S It uses sh_entsize of 640, which is not a power of 2. See https://github.com/ClangBuiltLinux/linux/issues/417 Reviewers: ruiu, espindola Reviewed By: ruiu Subscribers: nickdesaulniers, E5ten, emaste, arichardson, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59478 llvm-svn: 356428
2019-03-19 07:49:18 +08:00
# CHECK-NEXT: AddressAlignment: 1
[ELF] Disable ICF for synthetic sections The Data member of synthetic section's is not valid and empty. The Data member is required to be valid by ICF as it is used by ICF to determine the equality of section contents. Therefore, exclude synthetic sections from ICF. Fixes bug PR36910. Differential Revision: https://reviews.llvm.org/D44923 llvm-svn: 328624
2018-03-27 22:10:07 +08:00
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: SectionData (
# CHECK-NEXT: 0000: 67452301 10325476 67452301 10325476
Add a minimal fix for PR36878. When looking for the output section and the output offset the expectation was that the caller had looked at Repl. That works fine for InputSections, but in the case of MergeInputSections the caller doesn't have the section that is actually replaced. The original testcase was failing because getOutputSection was returning null. The slightly extended testcase also checks that getOffset also checks Repl. I will send a refactoring separetelly. llvm-svn: 328332
2018-03-24 01:19:18 +08:00
.section .rodata.cst4,"aM",@progbits,4
rodata4:
.long 0x01234567
.long 0x76543210
.long 0x01234567
.long 0x76543210
.section .rodata.cst8,"aM",@progbits,8
rodata8:
.long 0x01234567
.long 0x76543210