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| author | Rui Ueyama <ruiu@google.com> | 2017-10-21 23:20:13 +0000 |
|---|---|---|
| committer | Rui Ueyama <ruiu@google.com> | 2017-10-21 23:20:13 +0000 |
| commit | 95bf50987307333b10118907f5e781ab27b4f70c (patch) | |
| tree | 9aa8a5d449870825889afb23474d1a7448d3e641 /llvm/lib/CodeGen/CodeGenPrepare.cpp | |
| parent | 5b4f81ec14cd6d656514806f2a6b3b5e46d70103 (diff) | |
| download | bcm5719-llvm-95bf50987307333b10118907f5e781ab27b4f70c.tar.gz bcm5719-llvm-95bf50987307333b10118907f5e781ab27b4f70c.zip | |
Assume that mergeable input sections are smaller than 4 GiB.
By assuming that mergeable input sections are smaller than 4 GiB,
lld's memory usage when linking clang with debug info drops from
2.788 GiB to 2.019 GiB (measured by valgrind, and that does not include
memory space for mmap'ed files). I think that's a reasonable assumption
given such a large RAM savings, so this patch.
According to valgrind, gold needs 3.54 GiB of RAM to do the same thing.
NB: This patch does not introduce a limitation on the size of
output sections. You can still create sections larger than 4 GiB.
llvm-svn: 316280
Diffstat (limited to 'llvm/lib/CodeGen/CodeGenPrepare.cpp')
0 files changed, 0 insertions, 0 deletions
