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| author | Rui Ueyama <ruiu@google.com> | 2015-09-16 03:26:31 +0000 |
|---|---|---|
| committer | Rui Ueyama <ruiu@google.com> | 2015-09-16 03:26:31 +0000 |
| commit | 9cb2870ce09b6558ec431bf58b7d8a567f23ecef (patch) | |
| tree | 0a61c302f35c0f09a1cfb921c21681f791f23862 /llvm/lib/CodeGen/MachineBlockPlacement.cpp | |
| parent | fc314be0ec871771d2c7ecb31aa4c20a76328bfa (diff) | |
| download | bcm5719-llvm-9cb2870ce09b6558ec431bf58b7d8a567f23ecef.tar.gz bcm5719-llvm-9cb2870ce09b6558ec431bf58b7d8a567f23ecef.zip | |
ICF: Improve ICF to reduce more sections than before.
This is a patch to make LLD to be on par with MSVC in terms of ICF
effectiveness. MSVC produces a 27.14MB executable when linking LLD.
LLD previously produced a 27.61MB when self-linking. Now the size
is reduced to 27.11MB. Note that without ICF the size is 29.63MB.
In r247387, I implemented an algorithm that handles section graphs
as cyclic graphs and merge them using SCC. The algorithm did not
always work as intended as I demonstrated in r247721. The new
algortihm implemented in this patch is different from the previous
one. If you are interested the details, you want to read the file
comment of ICF.cpp.
llvm-svn: 247770
Diffstat (limited to 'llvm/lib/CodeGen/MachineBlockPlacement.cpp')
0 files changed, 0 insertions, 0 deletions
