Teresa Johnson b1e839beb3 [ThinLTO] Use MD5 hash in function index. ... Summary: This patch uses the lower 64-bits of the MD5 hash of a function name as a GUID in the function index, instead of storing function names. Any local functions are first given a global name by prepending the original source file name. This is the same naming scheme and GUID used by PGO in the indexed profile format. This change has a couple of benefits. The primary benefit is size reduction in the combined index file, for example 483.xalancbmk's combined index file was reduced by around 70%. It should also result in memory savings for the index file in memory, as the in-memory map is also indexed by the hash instead of the string. Second, this enables integration with indirect call promotion, since the indirect call profile targets are recorded using the same global naming convention and hash. This will enable the function importer to easily locate function summaries for indirect call profile targets to enable their import and subsequent promotion. The original source file name is recorded in the bitcode in a new module-level record for use in the ThinLTO backend pipeline. Reviewers: davidxl, joker.eph Subscribers: llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D17028 llvm-svn: 260408		2016-02-10 18:57:54 +00:00
..
Analysis	Add an "addUsedAAAnalyses" helper function	2016-02-09 01:21:57 +00:00
Assembler	Fix constant folding of constant vector GEPs with undef or null as pointer argument.	2016-01-19 16:34:31 +00:00
Bindings	Add support for struct in C API test	2016-02-10 00:38:50 +00:00
Bitcode	[ThinLTO] Use MD5 hash in function index.	2016-02-10 18:57:54 +00:00
BugPoint
CodeGen	[X86] Fix stack alignment for MCU target, by Anton Nadolskiy.	2016-02-10 11:57:06 +00:00
DebugInfo	[MC] Merge VK_PPC_TPREL in to generic VK_TPREL.	2016-02-10 18:32:01 +00:00
Examples
ExecutionEngine	Disable the new Orc lazy JIT tests on Windows, they do not pass	2016-02-10 18:46:42 +00:00
Feature	[GMR/OperandBundles] Teach getModRefBehavior about operand bundles	2016-02-09 02:31:47 +00:00
FileCheck
Instrumentation	[PGO] Enable compression in pgo instrumentation	2016-02-08 18:13:49 +00:00
Integer
JitListener
LibDriver
Linker	[ThinLTO] Remove imported available externally defs from comdats.	2016-02-08 18:47:20 +00:00
LTO	[LTO] Restore original linkage of externals prior to splitting	2016-01-18 23:24:54 +00:00
MC	[MC] Merge VK_PPC_TPREL in to generic VK_TPREL.	2016-02-10 18:32:01 +00:00
Object	Fix identify_magic() to check that a file that starts with MH_MAGIC is	2016-01-26 23:43:37 +00:00
Other
SymbolRewriter
TableGen	SelectionDAG: Make Properties a field of SDPatternOperator	2016-02-10 18:40:04 +00:00
tools	[ThinLTO] Use MD5 hash in function index.	2016-02-10 18:57:54 +00:00
Transforms	[PGO] Indirect-call profile annotation in IR level profiling	2016-02-10 18:24:45 +00:00
Unit
Verifier	Add a "gc-transition" operand bundle	2016-01-20 19:50:25 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.cfg	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.site.cfg.in
TestRunner.sh