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Rui Ueyama 1c837b5fb1 [ICF] Ignore SHF_GROUP flag when comparing two sections. 
SHF_GROUP bit doesn't make sense in executables or DSOs, so linkers are
expected to remove that bit from section flags. We did that when we create
output sections.

This patch is to do that earlier than before. Now the flag is dropped when
we instantiate input section objects.

This change improves ICF. Previously, two sections that differ only in
SHF_GROUP flag were not merged, because when the control reached ICF,
the flag was still there. Now the flag is dropped before reaching to ICF,
so the difference is ignored naturally.

This issue was found by pcc.

Differential Revision: https://reviews.llvm.org/D34074

llvm-svn: 305134
 		2017-06-10 00:38:55 +00:00
..
COFF Use check() to report an error. 2017-06-08 23:43:44 +00:00
ELF [ICF] Ignore SHF_GROUP flag when comparing two sections. 2017-06-10 00:38:55 +00:00
cmake/modules [lld][cmake] Fix BUILD_SHARED_LIBS installation 2017-01-24 10:41:02 +00:00
docs docs: Fix Sphinx detection with out-of-tree builds 2017-05-09 01:43:22 +00:00
include/lld Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
lib Add BinaryFormat to lld libraries 2017-06-07 18:06:11 +00:00
test [ICF] Ignore SHF_GROUP flag when comparing two sections. 2017-06-10 00:38:55 +00:00
tools/lld Accept not only lld-link but also LLD-LINK, for example. 2017-04-12 18:29:52 +00:00
unittests Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.clang-format
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.gitignore
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CMakeLists.txt Dummy commit to trigger CMake reconfiguration and unbreak Sphinx build 2017-05-04 08:32:33 +00:00
CODE_OWNERS.TXT Add initial CODE_OWNERS.TXT file 2015-07-25 00:44:37 +00:00
LICENSE.TXT Update copyright year to 2016. 2016-03-30 22:40:59 +00:00
README.md
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README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.