Duncan P. N. Exon Smith 67af0456bc 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> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199191 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-14 06:37:26 +00:00
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Analysis	[PM] Split DominatorTree into a concrete analysis result object which	2014-01-13 13:07:17 +00:00
AsmParser	Move the LLVM IR asm writer header files into the IR directory, as they	2014-01-07 12:34:26 +00:00
Bitcode	Update getLazyBitcodeModule to use ErrorOr for error handling.	2014-01-13 18:31:04 +00:00
CodeGen	Always let value types influence register classes.	2014-01-14 06:18:38 +00:00
DebugInfo	llvm-dwarfdump: type unit dwo support	2014-01-09 05:08:24 +00:00
ExecutionEngine	Re-sort #include lines again, prior to moving headers around.	2014-01-13 08:04:33 +00:00
IR	Fix llc to not reuse spill slots in functions that invoke setjmp()	2014-01-14 04:20:01 +00:00
IRReader	Update getLazyBitcodeModule to use ErrorOr for error handling.	2014-01-13 18:31:04 +00:00
Linker	Revert "Move copying of global initializers below the cloning of functions."	2013-11-09 00:43:18 +00:00
LTO	LTO: add API to set strategy for -internalize	2014-01-14 06:37:26 +00:00
MC	Replace .mips_hack_stocg with ".set micromips" and ".set nomicromips".	2014-01-14 04:25:13 +00:00
Object	Re-sort all of the includes with ./utils/sort_includes.py so that	2014-01-07 11:48:04 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
Support	raw_fd_ostream: Don't change STDERR to O_BINARY, or w*printf() (in assert()) would barf wide chars after llvm::errs().	2014-01-12 16:14:24 +00:00
TableGen	[TableGen] Correctly generate implicit anonymous prototype defs in multiclasses	2014-01-02 20:47:09 +00:00
Target	Switch the NEON register class from QPR to DPair.	2014-01-14 06:18:34 +00:00
Transforms	LTO: add API to set strategy for -internalize	2014-01-14 06:37:26 +00:00
CMakeLists.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
LLVMBuild.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
Makefile	Reformat Makefile. No other changes.	2013-10-30 04:03:03 +00:00