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| author | Kalle Raiskila <kalle.raiskila@nokia.com> | 2011-01-11 09:07:54 +0000 |
|---|---|---|
| committer | Kalle Raiskila <kalle.raiskila@nokia.com> | 2011-01-11 09:07:54 +0000 |
| commit | 76020ed6f33e3b3943b25c8b5e111afece086f5c (patch) | |
| tree | a82e35de61771d5249f1ae9eef88b8981b69e319 /test/Analysis/ScalarEvolution/nsw.ll | |
| parent | 87376839a651ed1221dd46762701f13ad6ece0eb (diff) | |
| download | external_llvm-76020ed6f33e3b3943b25c8b5e111afece086f5c.zip external_llvm-76020ed6f33e3b3943b25c8b5e111afece086f5c.tar.gz external_llvm-76020ed6f33e3b3943b25c8b5e111afece086f5c.tar.bz2 | |
Add a "nop filler" pass to SPU.
Filling no-ops is done just before emitting of assembly,
when the instruction stream is final. No-ops are inserted
to align the instructions so the dual-issue of the pipeline
is utilized. This speeds up generated code with a minimum of
1% on a select set of algorithms.
This pass may be redundant if the instruction scheduler and
all subsequent passes that modify the instruction stream
(prolog+epilog inserter, register scavenger, are there others?)
are made aware of the instruction alignments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123226 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/ScalarEvolution/nsw.ll')
0 files changed, 0 insertions, 0 deletions