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Nathan Slingerland b95c2eec31 [llvm-profdata] Add support for weighted merge of profile data (2nd try) 
Summary:
This change adds support for specifying a weight when merging profile data with the llvm-profdata tool.
Weights are specified by using the --weighted-input=<weight>,<filename> option. Input files not specified
with this option (normal positional list after options) are given a default weight of 1.

Adding support for arbitrary weighting of input profile data allows for relative importance to be placed on the
input data from multiple training runs.

Both sampled and instrumented profiles are supported.

Reviewers: davidxl, dnovillo, bogner, silvas

Subscribers: silvas, davidxl, llvm-commits

Differential Revision: http://reviews.llvm.org/D15306

llvm-svn: 255659
2015-12-15 17:37:09 +00:00
..
ADT Handle ARMv6-J as an alias, instead of fake architecture 2015-11-20 16:46:09 +00:00
Analysis [AA] Enhance the new AliasAnalysis infrastructure with an optional 2015-10-21 12:15:19 +00:00
AsmParser Fix PR 24633 - Handle undef values when parsing standalone constants. 2015-09-09 13:44:33 +00:00
Bitcode Fix memory leak in unit test of Bitcode/BitReaderTest.cpp 2015-08-03 21:23:51 +00:00
CodeGen AsmPrinter: Use an intrusively linked list for DIE::Children 2015-06-25 23:52:10 +00:00
DebugInfo Fix compilation of PDBApiTest. 2015-05-01 20:51:49 +00:00
ExecutionEngine [Orc] Removing traces of takeOwnershipOfBuffers left after r251560. 2015-12-07 17:35:56 +00:00
IR add fast-math-flags to 'call' instructions (PR21290) 2015-12-14 21:59:03 +00:00
LineEditor Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Linker Use diagnostic handler in the LLVMContext 2015-12-14 23:17:03 +00:00
MC Add a RAW mode to StringTableBuilder. 2015-10-23 21:48:05 +00:00
Option [Option] Use an ArrayRef to store the Option Infos in OptTable. NFC 2015-10-21 16:30:42 +00:00
ProfileData [llvm-profdata] Add support for weighted merge of profile data (2nd try) 2015-12-15 17:37:09 +00:00
Support Mark ThreadPool unittests as unsupported on PowerPC64 2015-12-15 09:10:28 +00:00
Transforms Return a std::unique_ptr from CloneModule. NFC. 2015-12-08 23:57:17 +00:00
CMakeLists.txt AsmParser: Require a terminating null character when creating memory buffer. 2015-05-20 20:41:27 +00:00
Makefile AsmParser: Require a terminating null character when creating memory buffer. 2015-05-20 20:41:27 +00:00
Makefile.unittest