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1523a24050
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90 Commits

Author SHA1 Message Date
Rafael Espindola
1523a24050 libLTO has a bug in that it will keep every symbol if none is needed. We used 
to hack around this in the gold plugin by deleting a module if no symbol was
needed. Unfortunately, the hack is wrong in the case of o module having no
visible symbols but still having side effects via static constructors.

The bug will have to be fixed in libLTO itself.

llvm-svn: 166745
 2012-10-26 00:29:57 +00:00
Rafael Espindola
41573a702b Pass -lLTO after gold-plugin.o so that it gets used in systems that default to 
--as-needed.
Patch by Felix Geyer. Fixes pr13262.

llvm-svn: 162652
 2012-08-27 03:03:07 +00:00
Rafael Espindola
a0d94f4f75 Use LTO_CODEGEN_PIC_MODEL_DYNAMIC for PIE. This requirest a git version of 
gold to work. Since the enum value LDPO_PIE has just been added to plugin-api.h,
use a numeric constant for now so that we don't require an unreleased
version of gold to build.

llvm-svn: 158402
 2012-06-13 13:30:24 +00:00
Dylan Noblesmith
40dea4f20c drop unneeded config.h includes 
llvm-svn: 147197
 2011-12-22 23:04:07 +00:00
Rafael Espindola
17a991f91c Point to libLTO with -L/PATH/ -lLTO so that it is found in the install 
directory.
Patch by Markus Trippelsdorf.

llvm-svn: 145095
 2011-11-23 03:07:25 +00:00
Peter Collingbourne
470083dc27 Use absolute path to exportsfile in gold plugin CMake build. 
(Ninja generator requirement.)

llvm-svn: 143783
 2011-11-05 04:17:20 +00:00
Daniel Dunbar
81780d9982 build: Tidy up a bunch of tool Makefiles, and simplify where possible using the 
new all-targets pseudo-component.

llvm-svn: 142401
 2011-10-18 19:27:24 +00:00
Ivan Krasin
de2d3cf093 use 64-bit types instead of off_t/size_t to avoid the issue when 
gold plugin is built with Large File Support (sizeof(off_t) == 64 on i686)
and the rest of LLVM is built w/o Large File Support
(sizeof(off_t) == 32 on i686) which corrupts the stack.

llvm-svn: 139873
 2011-09-15 23:13:00 +00:00
Ivan Krasin
6b8225fcda gold plugin: don't report error on non-bitcode (e.g. ELF) files. 
llvm-svn: 139544
 2011-09-12 21:47:50 +00:00
Ivan Krasin
19d51af328 gold plugin: report errors occured in lto_module_create_from_* 
llvm-svn: 139340
 2011-09-09 00:14:04 +00:00
Nick Lewycky
f3995084c9 Don't try to dereference syms[0] on an empty vector. Reported by Todd Jackson 
and Jeffrey Bosboom!

llvm-svn: 136066
 2011-07-26 08:40:36 +00:00
Nick Lewycky
d35075f814 Also remove -lLTO which should have been in r132349. I failed to apply this 
from David Meyer's patch!

llvm-svn: 132352
 2011-05-31 20:00:45 +00:00
Nick Lewycky
2e4a814868 Make the gold plugin build on Cygwin as well as Linux. Patch by David Meyer! 
llvm-svn: 132349
 2011-05-31 19:53:26 +00:00
Oscar Fuentes
d323e73950 CMake builds gold by default since revision 127466. This is 
inconsistent with autoconf, which by default set BINUTILS_INCDIR to
empty and exclude gold from target list.

Based on a patch by Haitao Li!

llvm-svn: 131229
 2011-05-12 11:26:21 +00:00
Duncan Sands
9a37d60dff Remove an unused variable. 
llvm-svn: 130860
 2011-05-04 19:13:01 +00:00
Rafael Espindola
61e0c74936 If present, use gold's support for getting a file view. This prevents having 
to map the file both in the linker and in the plugin.

llvm-svn: 129109
 2011-04-07 21:11:00 +00:00
Rafael Espindola
1592f3ae24 Add a lto_codegen_compile_to_file to avoid producing a file, reading it to 
memory and writing it back to disk.

llvm-svn: 128108
 2011-03-22 20:57:13 +00:00
Rafael Espindola
8dab9a762b Add support in the LTO library for loading an object from the middle 
of an file.

llvm-svn: 127781
 2011-03-17 00:36:11 +00:00
Oscar Fuentes
548931d606 Force re-linking of LLVMgold.so when its exports file changes. 
llvm-svn: 127473
 2011-03-11 18:27:13 +00:00
Oscar Fuentes
d83646bbfd Fix processing of gold.exports. 
llvm-svn: 127471
 2011-03-11 18:07:46 +00:00
Oscar Fuentes
57a2625738 Add LTO and gold plugin to the CMake build. Linux-only, support for 
other systems pending.

PR9456.

llvm-svn: 127466
 2011-03-11 15:44:24 +00:00
Rafael Espindola
53fdf0bfc1 Gold now rescans archives as needed, so the pass-through options are not 
necessary anymore.

llvm-svn: 126580
 2011-02-27 20:30:22 +00:00
Rafael Espindola
744cde8b39 bfd was fixed, remove the work around. 
llvm-svn: 126579
 2011-02-27 20:15:37 +00:00
Rafael Espindola
13bfff7d40 LTO uses MC now. 
llvm-svn: 126546
 2011-02-26 16:44:13 +00:00
Rafael Espindola
83ad96cc73 Dispose modules early and only create codegen when the plugin is being 
used by the linker and not by nm or ar.

llvm-svn: 126089
 2011-02-20 18:28:29 +00:00
Rafael Espindola
f2fd1bf3d8 Add modules to codegen as soon as possible. This reduces the link time 
of libxul from 12m31.084s to 7m1.359s.

llvm-svn: 126052
 2011-02-19 21:49:57 +00:00
Rafael Espindola
3c40b1fab0 Add a debug obj-path option to make it easy to keep the .o produce by LTO. 
llvm-svn: 125663
 2011-02-16 11:19:44 +00:00
Rafael Espindola
3c32af5834 Switch llvm to using comdats. For now always use groups with a single 
section.

llvm-svn: 125526
 2011-02-14 22:23:49 +00:00
Rafael Espindola
43f9672afa Don't open the file again in the gold plugin. To be able to do this, update 
MemoryBuffer::getOpenFile to not close the file descriptor.

llvm-svn: 125128
 2011-02-08 22:40:47 +00:00
Michael J. Spencer
2bf08ad59d gold: MinGW fix. 
llvm-svn: 123886
 2011-01-20 05:43:16 +00:00
Charles Davis
e7f14dfdb8 Now to chant the magical incantation that will exorcise the System library 
from LLVM forever:

grep -lR "llvm/System" * | grep -v .svn | xargs sed -ie 's#llvm/System#llvm/Support#g'

llvm-svn: 120314
 2010-11-29 19:44:50 +00:00
Michael J. Spencer
4a63404543 I swear I did a make clean and make before committing all this... 
llvm-svn: 120304
 2010-11-29 18:47:54 +00:00
Dan Gohman
6645ce3f75 Move tool_output_file into its own file. 
llvm-svn: 115973
 2010-10-07 20:32:40 +00:00
NAKAMURA Takumi
7857655635 Don't build redundant libLLVMgold.a. 
Building archive would be executed due to definition of BUILD_ARCHIVE,
even if BUILD_ARCHIVE = "0".

llvm-svn: 113578
 2010-09-10 06:26:57 +00:00
Nick Lewycky
7d3f15bab3 Fix compile errors. 
llvm-svn: 112808
 2010-09-02 05:44:31 +00:00
Dan Gohman
d8be4c4aca Convert tools to use tool_output_file, and introduce error 
checking to places which previously lacked it.

llvm-svn: 111651
 2010-08-20 16:59:15 +00:00
Rafael Espindola
f345661269 Make it possible to set the cpu used for codegen. 
llvm-svn: 110759
 2010-08-11 00:15:13 +00:00
Rafael Espindola
c61143ae75 Make it possible to set the flags passed to the assembler. 
Nick, please review.

llvm-svn: 110705
 2010-08-10 18:55:09 +00:00
Rafael Espindola
acfdd67ec8 Fix silly bug. 
llvm-svn: 110684
 2010-08-10 16:32:15 +00:00
Rafael Espindola
fd90a58cd3 Make it possible to set the target triple and expose that with an option in the 
gold plugin.

llvm-svn: 110604
 2010-08-09 21:09:46 +00:00
Rafael Espindola
c3b766cc93 s/libLLVMgold/LLVMgold/g 
llvm-svn: 110552
 2010-08-08 21:14:26 +00:00
Duncan Sands
d0286618b5 Remove variables that are written by not read. 
llvm-svn: 107126
 2010-06-29 11:07:47 +00:00
Rafael Espindola
ea22615ccd Add an extra-library-path option to the plugin. This is used to support 
having a library both as bitcode and native code. We want to use the
bitcode first, but if codegen produces new undefined references we have to use
the native code to satisfy those references.

Gold has no notion of bitcode and native search directories, so instead it has
an API where the plugin can instruct it to look for the libraries it is passing
to it. This patch uses that API.

llvm-svn: 106674
 2010-06-23 20:20:59 +00:00
Rafael Espindola
705c2bd4c3 add_input_file and add_input_library now take const arguments, remove the 
const_cast.

llvm-svn: 106410
 2010-06-21 02:23:12 +00:00
Rafael Espindola
d7bfa3a0f7 Add a pass-through option to the plugin. The use case for this option is to 
ask the linker to take another look into some library or object. The case when
one might want to do this is when codegen introduces a new undefined reference.
The canonical example is libgcc.

llvm-svn: 106303
 2010-06-18 19:18:58 +00:00
Rafael Espindola
23f533848f Don't produce output only if *all* files are unused. 
llvm-svn: 105962
 2010-06-14 21:20:52 +00:00
Nick Lewycky
ff1e3db00e Plug a leak in the non-error case by removing one level of indirection. 
llvm-svn: 105556
 2010-06-07 21:42:19 +00:00
Rafael Espindola
b93be14fa0 Misc cleanups to the gold plugin. 
llvm-svn: 105534
 2010-06-07 16:45:22 +00:00
Rafael Espindola
ee11d1e6a5 Add a emit-llvm option to the plugin and make the path argument to also-emit-llvm optional. 
llvm-svn: 105414
 2010-06-03 21:11:20 +00:00
Nick Lewycky
14c5598c42 Perfer !string.empty() over string != "". 
llvm-svn: 105397
 2010-06-03 17:13:23 +00:00