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llvm-project/lld/test/ELF/icf-absolute.s

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ELF: Fix ICF crash on absolute symbol relocations. If two sections contained relocations to absolute symbols with the same value we would crash when trying to access their sections. Add a check that both symbols point to sections before accessing their sections, and treat absolute symbols as equal if their values are equal. Differential Revision: https://reviews.llvm.org/D28935 llvm-svn: 292578
2017-01-20 12:58:12 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %S/Inputs/icf-absolute.s -o %t2
Use ErrorOS for log messages as well as error log are also diagnostics so it seems like they should to the same place as errors and debug messages. Without this change when I enable --verbose those messages go to stdout, but when I enable "-mllvm -debug" those messages go to stderr (because dbgs() goes to stderr by default). So I end up having to do this a lot: lld <args> > output_message 2>&1 Differential Revision: https://reviews.llvm.org/D41033 llvm-svn: 320427
2017-12-12 05:57:31 +08:00
# RUN: ld.lld %t %t2 -o %t3 --icf=all --verbose 2>&1 | FileCheck %s
ELF: Fix ICF crash on absolute symbol relocations. If two sections contained relocations to absolute symbols with the same value we would crash when trying to access their sections. Add a check that both symbols point to sections before accessing their sections, and treat absolute symbols as equal if their values are equal. Differential Revision: https://reviews.llvm.org/D28935 llvm-svn: 292578
2017-01-20 12:58:12 +08:00
[ELF] Add --print-icf-sections flag Currently ICF information is output through stderr if the "--verbose" flag is used. This differs to Gold for example, which uses an explicit flag to output this to stdout. This commit adds the "--print-icf-sections" and "--no-print-icf-sections" flags and changes the output message format for clarity and consistency with "--print-gc-sections". These messages are still output to stderr if using the verbose flag. However to avoid intermingled message output to console, this will not occur when the "--print-icf-sections" flag is used. Existing tests have been modified to expect the new message format from stderr. Patch by Owen Reynolds. Differential Revision: https://reviews.llvm.org/D42375 Reviewers: ruiu, rafael Reviewed by: llvm-svn: 323976
2018-02-02 00:00:46 +08:00
# CHECK: selected section '.text.f1' from file
# CHECK: removing identical section '.text.f2' from file
ELF: Fix ICF crash on absolute symbol relocations. If two sections contained relocations to absolute symbols with the same value we would crash when trying to access their sections. Add a check that both symbols point to sections before accessing their sections, and treat absolute symbols as equal if their values are equal. Differential Revision: https://reviews.llvm.org/D28935 llvm-svn: 292578
2017-01-20 12:58:12 +08:00
.globl _start, f1, f2
_start:
ret
.section .text.f1, "ax"
f1:
.byte a1
.section .text.f2, "ax"
f2:
.byte a2