hanchenye-llvm-project

History

Rafael Espindola 4d47f7f52b Simplify the handling of aliases in the gold plugin. The complicated situation is when we have to keep an alias but drop a GV that is part of the aliasee. We used to clone the dropped GV and make the clone internal. This is wasteful as we know the original will be dropped. With this patch what is done instead is set the linkage of the original to internal and replace all uses (but the one in the alias) with a new declaration that takes the name of the old GV. This saves us from having to copy the body. llvm-svn: 223863		2014-12-10 00:09:35 +00:00
..
CMakeLists.txt	Be less conservative about when we build the gold plugin.	2014-12-05 17:25:52 +00:00
Makefile	Rewrite the gold plugin to fix pr19901.	2014-08-21 20:28:55 +00:00
README.txt	Cut the gold plugin README down to size	2013-12-02 14:17:47 +00:00
gold-plugin.cpp	Simplify the handling of aliases in the gold plugin.	2014-12-10 00:09:35 +00:00
gold.exports	…

README.txt

The LLVM Gold LTO Plugin
========================

This directory contains a plugin that is designed to work with binutils
gold linker. At present time, this is not the default linker in
binutils, and the default build of gold does not support plugins.

See docs/GoldPlugin.html for complete build and usage instructions.

NOTE: libLTO and LLVMgold aren't built without PIC because they would fail
to link on x86-64 with a relocation error: PIC and non-PIC can't be combined.
As an alternative to passing --enable-pic, you can use 'make ENABLE_PIC=1' in
your entire LLVM build.