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llvm-mirror/include/llvm/ProfileData
David Blaikie 49c930532f llvm-profdata: Indirect infrequently used fields to reduce memory usage
Examining a large profile example, it seems relatively few records have
non-empty IndirectCall and MemOP data, so indirecting these through a
unique_ptr (non-null only when they are non-empty) Reduces memory usage
on this particular example from 14GB to 10GB according to valgrind's
massif.

I suspect it'd still be worth moving InstrProfWriter to its own data
structure that had Counts and the indirected IndirectCall+MemOP, and did
not include the Name, Hash, or Error fields. This would reduce the size
of this dominant data structure by half of this new, lower amount.
(Name(2), Hash(1), Error(1) ~= Counts(vector, 3), ValueProfData
(unique_ptr, 1))
-> From code review feedback, might actually refactor InstrProfRecord
itself to have a sub-struct with all the counts, and use that from
InstrProfWriter, rather than InstrProfWriter owning its own data
structure for this.

Reviewers: davidxl

Differential Revision: https://reviews.llvm.org/D34694

llvm-svn: 306631
2017-06-29 02:51:58 +00:00
..
Coverage [Coverage] Improve readability by using a struct. NFC. 2017-06-26 22:33:06 +00:00
InstrProf.h llvm-profdata: Indirect infrequently used fields to reduce memory usage 2017-06-29 02:51:58 +00:00
InstrProfData.inc
InstrProfReader.h [ProfileData, Support] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-21 23:19:47 +00:00
InstrProfWriter.h [ProfileData, Support] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-21 23:19:47 +00:00
ProfileCommon.h
SampleProf.h [ProfileData, Support] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-21 23:19:47 +00:00
SampleProfReader.h [ProfileData, Support] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-21 23:19:47 +00:00
SampleProfWriter.h Change sample profile writer to make it deterministic. 2017-05-11 23:43:44 +00:00