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llvm/tools/gold
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Teresa Johnson b97baa5fe5 Support for function summary index bitcode sections and files. 
Summary:
The bitcode format is described in this document:
  https://drive.google.com/file/d/0B036uwnWM6RWdnBLakxmeDdOeXc/view
For more info on ThinLTO see:
  https://sites.google.com/site/llvmthinlto

The first customer is ThinLTO, however the data structures are designed
and named more generally based on prior feedback. There are a few
comments regarding how certain interfaces are used by ThinLTO, and the
options added here to gold currently have ThinLTO-specific names as the
behavior they provoke is currently ThinLTO-specific.

This patch includes support for generating per-module function indexes,
the combined index file via the gold plugin, and several tests
(more are included with the associated clang patch D11908).

Reviewers: dexonsmith, davidxl, joker.eph

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13107

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249270 91177308-0d34-0410-b5e6-96231b3b80d8
2015-10-04 14:33:43 +00:00
..
CMakeLists.txt [gold] Consolidate the gold plugin options and actually search for 2015-02-14 09:43:57 +00:00
gold-plugin.cpp Support for function summary index bitcode sections and files. 2015-10-04 14:33:43 +00:00
gold.exports Create an exports file, so that the plugin only exports the onload symbol. 2010-04-16 00:43:25 +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

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.