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Rafael Espindola a8fd65832a Drop comdats from the dst module if they are not selected.
A really unfortunate design of llvm-link and related libraries is that
they operate one module at a time.

This means they can copy a GV to the destination module that should not
be there in the final result because a later bitcode file takes
precedence.

We already handled cases like a strong GV replacing a weak for example.

One case that is not currently handled is a comdat replacing another.
This doesn't happen in ELF, but with COFF largest selection kind it is
possible.

In "llvm-link a.ll b.ll" if the selected comdat was from a.ll,
everything will work and we will not copy the comdat from b.ll.

But if we run "llvm-link b.ll a.ll", we fail to delete the already
copied comdat from b.ll. This patch fixes that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264103 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-22 21:35:47 +00:00
bindings bindings/go: reinstate TargetMachine.TargetData 2016-03-15 05:04:06 +00:00
cmake cmake: include what you use 2016-03-08 18:56:00 +00:00
docs Revert "Support arbitrary addrspace pointers in masked load/store intrinsics" 2016-03-22 20:24:34 +00:00
examples [PM] Update Kaleidoscope with the new header file. 2016-03-11 12:10:15 +00:00
include Revert "Support arbitrary addrspace pointers in masked load/store intrinsics" 2016-03-22 20:24:34 +00:00
lib Drop comdats from the dst module if they are not selected. 2016-03-22 21:35:47 +00:00
projects Remove autoconf support 2016-01-26 21:29:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test Drop comdats from the dst module if they are not selected. 2016-03-22 21:35:47 +00:00
tools Revert "[llvm-objdump] Printing relocations in executable and shared object files. This partially reverts r215844 by removing test objdump-reloc-shared.test which stated GNU objdump doesn't print relocations, it does." 2016-03-21 20:59:15 +00:00
unittests [unittests] clang-format a line, NFC 2016-03-22 15:14:18 +00:00
utils Typesafe visualization of PointerIntPairs in Visual Studio 2016-03-18 20:06:16 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy adding readability-identifier-naming to llvm clang-tidy configuration. 2015-12-08 17:44:51 +00:00
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt llvm-shlib: Remove the option to override __cxa_atexit 2016-03-14 21:54:45 +00:00
CODE_OWNERS.TXT Add self to CODE_OWNERS 2016-03-08 19:01:15 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
README.txt Revert previous test commit. 2016-01-04 19:13:29 +00:00

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

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

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.