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9 Commits

Author SHA1 Message Date
Rafael Espindola 3d7fc25c7c Optimize more linkonce_odr values during LTO. 
When a linkonce_odr value that is on the dso list is not unnamed_addr
we can still look to see if anything is actually using its address. If
not, it is safe to hide it.

This patch implements that by moving GlobalStatus to Transforms/Utils
and using it in Internalize.

llvm-svn: 193090
 2013-10-21 17:14:55 +00:00
Rafael Espindola dc9fe0af85 Fix object file writing in llvm-lto on Windows. 
We were writing in text mode.

Patch by Greg Bedwell.

llvm-svn: 191985
 2013-10-04 21:40:54 +00:00
Rafael Espindola cda2911caa Optimize linkonce_odr unnamed_addr functions during LTO. 
Generalize the API so we can distinguish symbols that are needed just for a DSO
symbol table from those that are used from some native .o.

The symbols that are only wanted for the dso symbol table can be dropped if
llvm can prove every other dso has a copy (linkonce_odr) and the address is not
important (unnamed_addr).

llvm-svn: 191922
 2013-10-03 18:29:09 +00:00
Rafael Espindola 366296c0ef Disable this test on Win32 for now. 
llvm-svn: 191830
 2013-10-02 14:48:35 +00:00
Rafael Espindola dafc53dde1 Add a -exported-symbol option to llvm-lto. 
Patch by Tom Roeder.

llvm-svn: 191825
 2013-10-02 14:12:56 +00:00
Rafael Espindola d38f9af213 Enable building LTO on WIN32. 
Enable building the LTO library (.lib and.dll) and llvm-lto.exe on Windows with
MSVC and Mingw as well as re-enabling the associated test.

Patch by Greg Bedwell!

llvm-svn: 191823
 2013-10-02 14:04:38 +00:00
Rafael Espindola cbef8e60e3 Revert "Enable building LTO on WIN32." 
This reverts commit r191670.

It was causing build failures on the msvc bots:

http://bb.pgr.jp/builders/ninja-clang-i686-msc17-R/builds/5166/steps/compile/logs/stdio

llvm-svn: 191679
 2013-09-30 16:32:51 +00:00
Rafael Espindola e693181c10 Enable building LTO on WIN32. 
Enable building the LTO library (.lib and.dll) and llvm-lto.exe on Windows with
MSVC and Mingw as well as re-enabling the associated test.

Patch by Greg Bedwell!

llvm-svn: 191670
 2013-09-30 15:28:14 +00:00
Peter Collingbourne 4ccf0f1bef Move LTO support library to a component, allowing it to be tested 
more reliably across platforms.  Patch by Tom Roeder!

llvm-svn: 191343
 2013-09-24 23:52:22 +00:00