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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2010-09-30 16:18:28 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2010-09-30 16:18:28 +0000 |
| commit | 82d96cccbc40f53c28dd8288b475e535ef017c3a (patch) | |
| tree | 6bec1ea584046caa24277512c197b6ac61eb26cb /lib/Target/TargetSubtarget.cpp | |
| parent | 2f24c4ece09f1157c5cb29357d91d2a0d77eb57c (diff) | |
Grow BumpPtrAllocator's slab size dynamically if we allocated many slabs. This
reduces the amount of malloc calls and may reduce memory overhead.
Some numbers:
ASTContext stats, clang -cc1 -disable-free -fsyntax-only Cocoa_h.m
without dynamic growth | with dynamic growth
Number of memory regions: 3158 | Number of memory regions: 432
Bytes used: 12333185 | Bytes used: 12333185
Bytes allocated: 12935168 | Bytes allocated: 12800000
Bytes wasted: 601983 (includes alignment, etc) | Bytes wasted: 466815 (includes alignment, etc)
ASTContext stats, clang -cc1 -disable-free -fsyntax-only on clang's ASTReader.cpp
without dynamic growth | with dynamic growth
Number of memory regions: 10987 | Number of memory regions: 551
Bytes used: 42910356 | Bytes used: 42910356
Bytes allocated: 45002752 | Bytes allocated: 44711936
Bytes wasted: 2092396 (includes alignment, etc) | Bytes wasted: 1801580 (includes alignment, etc)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115151 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/TargetSubtarget.cpp')
0 files changed, 0 insertions, 0 deletions