Duncan P. N. Exon Smith 95dadb39e4 LTO: add API to set strategy for -internalize ... Add API to LTOCodeGenerator to specify a strategy for the -internalize pass. This is a new attempt at Bill's change in r185882, which he reverted in r188029 due to problems with the gold linker. This puts the onus on the linker to decide whether (and what) to internalize. In particular, running internalize before outputting an object file may change a 'weak' symbol into an internal one, even though that symbol could be needed by an external object file --- e.g., with arclite. This patch enables three strategies: - LTO_INTERNALIZE_FULL: the default (and the old behaviour). - LTO_INTERNALIZE_NONE: skip -internalize. - LTO_INTERNALIZE_HIDDEN: only -internalize symbols with hidden visibility. LTO_INTERNALIZE_FULL should be used when linking an executable. Outputting an object file (e.g., via ld -r) is more complicated, and depends on whether hidden symbols should be internalized. E.g., for ld -r, LTO_INTERNALIZE_NONE can be used when -keep_private_externs, and LTO_INTERNALIZE_HIDDEN can be used otherwise. However, LTO_INTERNALIZE_FULL is inappropriate, since the output object file will eventually need to link with others. lto_codegen_set_internalize_strategy() sets the strategy for subsequent calls to lto_codegen_write_merged_modules() and lto_codegen_compile*(). <rdar://problem/14334895> llvm-svn: 199191		2014-01-14 06:37:26 +00:00
..
Transforms	Add a Scalarizer pass.	2013-11-22 16:58:05 +00:00
Analysis.h	Organize LLVM C API docs into doxygen modules; add docs	2012-03-21 03:54:29 +00:00
BitReader.h	include/llvm-c: Whitespace.	2013-10-23 17:56:29 +00:00
BitWriter.h	include/llvm-c: Whitespace.	2013-10-23 17:56:29 +00:00
Core.h	Begin adding docs and IR-level support for the inalloca attribute	2013-12-19 02:14:12 +00:00
Disassembler.h	For the 'C' disassembler API, add a new ReferenceType for the	2014-01-06 22:08:08 +00:00
ExecutionEngine.h	include/llvm-c: Whitespace.	2013-10-23 17:56:29 +00:00
Initialization.h	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
IRReader.h	[llvm-c] Expose IRReader interface	2013-11-06 09:21:15 +00:00
Linker.h	Supply a C interface to the "LinkModules" method.	2012-05-09 08:55:40 +00:00
LinkTimeOptimizer.h	include/llvm-c: Whitespace.	2013-10-23 17:56:29 +00:00
lto.h	LTO: add API to set strategy for -internalize	2014-01-14 06:37:26 +00:00
Object.h	include/llvm-c: Whitespace.	2013-10-23 17:56:29 +00:00
Support.h	Make sure LLVMLoadLibraryPermanently gets an extern "C" symbol.	2013-11-13 15:35:13 +00:00
Target.h	[llvm-c] Remove dead typedef	2013-11-11 14:47:01 +00:00
TargetMachine.h	Whitespace.	2014-01-10 11:12:01 +00:00