llvm-6502

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History

Peter Collingbourne 394be6c159 LTO: introduce object file-based on-disk module format. This format is simply a regular object file with the bitcode stored in a section named ".llvmbc", plus any number of other (non-allocated) sections. One immediate use case for this is to accommodate compilation processes which expect the object file to contain metadata in non-allocated sections, such as the ".go_export" section used by some Go compilers [1], although I imagine that in the future we could consider compiling parts of the module (such as large non-inlinable functions) directly into the object file to improve LTO efficiency. [1] http://golang.org/doc/install/gccgo#Imports Differential Revision: http://reviews.llvm.org/D4371 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218078 91177308-0d34-0410-b5e6-96231b3b80d8		2014-09-18 21:28:49 +00:00
..
CMakeLists.txt	Rewrite the gold plugin to fix pr19901.	2014-08-21 20:28:55 +00:00
gold-plugin.cpp	LTO: introduce object file-based on-disk module format.	2014-09-18 21:28:49 +00:00
gold.exports
Makefile	Rewrite the gold plugin to fix pr19901.	2014-08-21 20:28:55 +00:00
README.txt

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.