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| author | Daniel Dunbar <daniel@zuster.org> | 2010-03-25 19:35:56 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-03-25 19:35:56 +0000 |
| commit | 0cc8bd48619b943379f5c2cc11a19fb189342925 (patch) | |
| tree | 3242abaa26cea94b400c0b5ec25da1a071415671 /test | |
| parent | 6307dd263f52fb1fb3cbb2389a51d7d81ef106c1 (diff) | |
| download | external_llvm-0cc8bd48619b943379f5c2cc11a19fb189342925.zip external_llvm-0cc8bd48619b943379f5c2cc11a19fb189342925.tar.gz external_llvm-0cc8bd48619b943379f5c2cc11a19fb189342925.tar.bz2 | |
MC: Stop restarting layout on every relaxation.
- Still O(N^2), just a faster form, and now its the MCAsmLayout's fault.
On the .s I am tuning against (combine.s from 403.gcc):
--
ddunbar@lordcrumb:MC$ diff stats-before.txt stats-after.txt
5,10c5,10
< 1728 assembler - Number of assembler layout and relaxation steps
< 7707 assembler - Number of emitted assembler fragments
< 120588 assembler - Number of emitted object file bytes
< 2233448 assembler - Number of evaluated fixups
< 1727 assembler - Number of relaxed instructions
< 6723845 mcexpr - Number of MCExpr evaluations
---
> 3 assembler - Number of assembler layout and relaxation steps
> 7707 assembler - Number of emitted assembler fragments
> 120588 assembler - Number of emitted object file bytes
> 14796 assembler - Number of evaluated fixups
> 1727 assembler - Number of relaxed instructions
> 67889 mcexpr - Number of MCExpr evaluations
--
Feel free to LOL at the -before numbers, if you like.
I am a little surprised we make more than 2 relaxation passes. It's pretty
trivial for us to do relaxation out-of-order if that would give a speedup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99543 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
0 files changed, 0 insertions, 0 deletions