5 Commits

Author	SHA1	Message	Date
Reid Kleckner	3fc649cb76	[Support] Rename tool_output_file to ToolOutputFile, NFC ... This class isn't similar to anything from the STL, so it shouldn't use the STL naming conventions. llvm-svn: 314050	2017-09-23 01:03:17 +00:00
Peter Collingbourne	a0f371a106	Bitcode: Add a string table to the bitcode format. ... Add a top-level STRTAB block containing a string table blob, and start storing strings for module codes FUNCTION, GLOBALVAR, ALIAS, IFUNC and COMDAT in the string table. This change allows us to share names between globals and comdats as well as between modules, and improves the efficiency of loading bitcode files by no longer using a bit encoding for symbol names. Once we start writing the irsymtab to the bitcode file we will also be able to share strings between it and the module. On my machine, link time for Chromium for Linux with ThinLTO decreases by about 7% for no-op incremental builds or about 1% for full builds. Total bitcode file size decreases by about 3%. As discussed on llvm-dev: http://lists.llvm.org/pipermail/llvm-dev/2017-April/111732.html Differential Revision: https://reviews.llvm.org/D31838 llvm-svn: 300464	2017-04-17 17:51:36 +00:00
Peter Collingbourne	85c2184a8e	llvm-modextract: Call keep() on the output stream before exiting. ... llvm-svn: 288435	2016-12-01 23:13:11 +00:00
Peter Collingbourne	c893278419	Add another missing dependency. ... llvm-svn: 288217	2016-11-29 23:22:55 +00:00
Peter Collingbourne	cb6b920ba0	Add llvm-modextract tool. ... This program is for testing features that rely on multi-module bitcode files. It takes a multi-module bitcode file, extracts one of the modules and writes it to the output file. Differential Revision: https://reviews.llvm.org/D26778 llvm-svn: 288201	2016-11-29 21:54:33 +00:00