David Blaikie d02fba9580 Prototype: Reduce llvm-profdata merge memory usage further ... The InstrProfWriter already stores the name and hash of the record in the nested maps it uses for lookup while merging - this data is duplicated in the value within the maps. Refactor the InstrProfRecord to use a nested struct for the counters themselves so that InstrProfWriter can use this nested struct alone without the name or hash duplicated there. This work is incomplete, but enough to demonstrate the value (around a 50% decrease in memory usage for a large test case (10GB -> 5GB)). Though most of that decrease is probably from removing the SoftInstrProfError as well, but I haven't implemented a replacement for it yet. (it needs to go with the counters, because the operations on the counters - merging, etc, are where the failures are - unlike the name/hash which are totally unused by those counter-related operations and thus easy to split out) Ongoing discussion about removing SoftInstrProfError as a field of the InstrProfRecord is happening on the thread that added it - including the possibility of moving back towards an earlier version of that proposed patch that passed SoftInstrProfError through the various APIs, rather than as a member of InstrProfRecord. Reviewers: davidxl Differential Revision: https://reviews.llvm.org/D34838 llvm-svn: 307298		2017-07-06 19:00:12 +00:00
..
CMakeLists.txt	Revert r269131	2016-05-10 23:26:04 +00:00
CoverageMappingTest.cpp	Simplify InstrProfRecord tests, eliminating named temporaries in favor of braced init args	2017-07-06 05:19:17 +00:00
InstrProfTest.cpp	Prototype: Reduce llvm-profdata merge memory usage further	2017-07-06 19:00:12 +00:00
SampleProfTest.cpp	Re-sort #include lines for unittests. This uses a slightly modified	2017-06-06 11:06:56 +00:00