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David Majnemer 38d8be1ad8 CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 
COFF lacks a feature that other object file formats support: mergeable
sections.

To work around this, MSVC sticks constant pool entries in special COMDAT
sections so that each constant is in it's own section.  This permits
unused constants to be dropped and it also allows duplicate constants in
different translation units to get merged together.

This fixes PR20262.

Differential Revision: http://reviews.llvm.org/D4482

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213006 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-14 22:57:27 +00:00
..
ADT ADT: Surface LowerCase argument for utohexstr 2014-07-14 21:56:54 +00:00
Analysis removed circular definitions in comments 2014-07-14 21:51:59 +00:00
AsmParser
Bitcode Revert "Convert a few std::strings to StringRef." 2014-07-04 20:02:42 +00:00
CodeGen CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 2014-07-14 22:57:27 +00:00
Config config.h: remove clang-specific macro definitions 2014-06-06 04:50:41 +00:00
DebugInfo [DWARF parser] Teach DIContext to fetch short (non-linkage) function names for a given address. 2014-05-17 00:07:48 +00:00
ExecutionEngine [RuntimeDyld] Improve error diagnostic in RuntimeDyldChecker. 2014-07-10 23:26:20 +00:00
IR Add CreatePointerBitCastOrAddrSpaceCast to IRBuilder and co. 2014-07-14 17:24:35 +00:00
IRReader Make a helper function static. No functionality change. 2014-07-05 00:39:08 +00:00
LineEditor [C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API. 2014-04-21 09:34:48 +00:00
Linker IR: Add COMDATs to the IR 2014-06-27 18:19:56 +00:00
LTO Implement LTOModule on top of IRObjectFile. 2014-07-04 18:40:36 +00:00
MC CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 2014-07-14 22:57:27 +00:00
Object Fix the MSVC build following r212382 2014-07-06 10:54:41 +00:00
Option Option: Propagate flags from groups to options in each group 2014-07-12 00:18:58 +00:00
ProfileData ProfileData: Fix copy-paste type in RawInstrProfReader 2014-06-18 18:20:44 +00:00
Support Support: Fix option handling when using cl::Required with aliasopt 2014-07-14 20:53:57 +00:00
TableGen Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Target CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 2014-07-14 22:57:27 +00:00
Transforms Feeding isSafeToSpeculativelyExecute its DataLayout pointer 2014-07-10 14:41:31 +00:00
CMakeLists.txt [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
InitializePasses.h Templatify DominanceFrontier. 2014-07-12 21:59:52 +00:00
LinkAllIR.h
LinkAllPasses.h Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute. 2014-06-05 19:29:43 +00:00
module.modulemap [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
module.modulemap.build [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
Pass.h Revert "[PM] Add pass run listeners to the pass manager." 2014-05-15 17:49:20 +00:00
PassAnalysisSupport.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
PassInfo.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassManager.h
PassRegistry.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassSupport.h Move GlobalMerge from Transform to CodeGen. 2014-06-13 22:57:59 +00:00