Commit Graph

28 Commits

Author SHA1 Message Date
Bill Wendling
8ba9405c5c Hack the hack. If we have a situation where an ASM object is defined but isn't
reflected in the LLVM IR (as a declare or something), then treat it like a data
object.

N.B. This isn't 100% correct. The ASM parser should supply more information so
that we know what type of object it is, and what attributes it should have.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153870 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02 10:01:21 +00:00
Bill Wendling
1fcbca05db It could come about that we parse the inline ASM before we get a potential
definition for it. In that case, we want to wait for the potential definition
before we create a symbol for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153859 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02 03:33:31 +00:00
Bill Wendling
ab53bc76fd Cleanup whitespace and trim some of the #includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153807 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-31 11:10:35 +00:00
Bill Wendling
24b878031d Make some headway towards compiling all of LLVM.
Module-level ASM may contain definitions of functions and globals. However, we
were not telling the linker that these globals had definitions. As far as it was
concerned, they were just declarations.

Attempt to resolve this by inserting module-level ASM functions and globals into
the '_symbol' set so that the linker will know that they have values.

This gets us further towards our goal of compiling LLVM, but it still has
problems when linking libLTO.dylib because of the `-dead_strip' flag that's
passed to the linker.

<rdar://problem/11124216>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153638 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29 08:27:32 +00:00
Bill Wendling
3c6b29b7e9 Cleanup whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153634 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29 04:28:00 +00:00
Bill Wendling
3bb17380b1 Cleanup some whitespaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153612 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28 23:12:18 +00:00
Bill Wendling
62cf01e4c5 Reformat the LTOModule code to be more inline with LLVM's coding standards. Add
a bunch of comments for the various functions. No intended functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153595 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28 20:46:54 +00:00
Bill Wendling
30fe94ea43 Some whitespace cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28 04:17:34 +00:00
Bill Wendling
24c5b36841 Move comment to the correct place.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143690 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04 09:34:06 +00:00
Bill Wendling
a7280fd619 Make the Mangler an ivar so that it doesn't have to be passed around everywhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143689 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04 09:30:19 +00:00
Bill Wendling
b9bff969e9 Refactor the MCContext so that it's an ivar instead of a local which is passed
around. This is important for some future work as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143688 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04 09:24:40 +00:00
Ivan Krasin
603e103988 lto/addAsmGlobalSymbols: fail fracefully when the target does not define AsmParser.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139283 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-08 07:36:39 +00:00
Rafael Espindola
9a4584b54b Simplify the computation of undefined symbols. Instead of walking
functions and initializers, just report the declarations present in
the module.

The motivation is to open the way for using the lazy module parsing,
which should speed up clients that just want a symbol list (nm, ar).

This is slightly less precise, but since both -strip-dead-prototypes
and -globaldce are part of the standard pipeline, this shouldn't
change the result for clang/dragonegg produced binaries.

Any decl in an IL file was also put there because a FE expected it
to be necessary, so this should not be a problem for "-O0 -emit-llvm".

As a sanity check, I have bootstrapped clang on linux and built
firefox on both linux and darwin. A clang bootstrap on darwin
with LTO fails with or without this patch because, ironically,
the linker doesn't like the combination of dead_strip and LTO
when building libLTO.so :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127870 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18 05:12:38 +00:00
Rafael Espindola
f21b1058a1 Add support in the LTO library for loading an object from the middle
of an file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127781 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17 00:36:11 +00:00
Rafael Espindola
38c4e53549 Add a special streamer to libLTO that just records symbols definitions and
uses.

The result produced by the streamer is used to give the linker more accurate
information and to add to llvm.compiler.used. The second improvement removes
the need for the user to add __attribute__((used)) to functions only used in
inline asm. The first one lets us build firefox with LTO on Darwin :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126830 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02 04:14:42 +00:00
Rafael Espindola
b4cc031a3e 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125128 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08 22:40:47 +00:00
Rafael Espindola
cbb170d057 Make it possible to set the target triple and expose that with an option in the
gold plugin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110604 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09 21:09:46 +00:00
Douglas Gregor
1f291059b2 Fix struct/class mismatch for LTOModule and LTOCodeGenerator, detected by Clang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92004 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23 17:05:07 +00:00
Viktor Kutuzov
e823db8bae Added getDefaultSubtargetFeatures method to SubtargetFeatures class which returns a correct feature string for given triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89236 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18 20:20:05 +00:00
Owen Anderson
0e7a54672c Maintain the old LTO API, by using the global context.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74678 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02 00:31:14 +00:00
Owen Anderson
4434ed44c4 Make the use of const with respect to LLVMContext sane. Hopefully this is the last time, for the
moment, that I will need to make far-reaching changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74655 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-01 23:13:44 +00:00
Owen Anderson
31895e7359 Hold the LLVMContext by reference rather than by pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74640 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-01 21:22:36 +00:00
Owen Anderson
8b477ed579 Add a pointer to the owning LLVMContext to Module. This requires threading LLVMContext through a lot
of the bitcode reader and ASM parser APIs, as well as supporting it in all of the tools.

Patches for Clang and LLVM-GCC to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74614 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-01 16:58:40 +00:00
Nick Kledzik
3eb445feb2 <rdar://problem/6927148> libLTO needs to handle i386 magic objc class symbols
Parse __OBJC data structures and synthesize magic .objc_ symbols.
Also, alter mangler so that objc method names are readable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72700 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-01 20:33:09 +00:00
Evan Cheng
63d6f324ca Untabify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72600 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-30 00:48:34 +00:00
Rafael Espindola
7431af050f Add LTO_SYMBOL_DEFINITION_WEAKUNDEF, use that on the gold plugin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69972 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24 16:55:21 +00:00
Devang Patel
c2aec57c63 Do not forget global definitions from inline asm code block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53693 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-16 18:06:52 +00:00
Devang Patel
ebd69421a2 Rename new lto2 tool as lto.
lto2->lto


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52912 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-30 18:15:01 +00:00