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Document the SLP infrastructure.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179480 91177308-0d34-0410-b5e6-96231b3b80d8
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Nadav Rotem 2013-04-14 07:42:25 +00:00
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docs/Vectorizers.rst
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@ -329,3 +329,33 @@ into vector operations.
} }
.. _slp-vectorizer:
The SLP Vectorizer
==========================
The SLP vectorizer (superword-level parallelism) is a new experimental
infrastructure for vectorizing code and rolling loops.
A major focus of the work on the SLP vectorizer is to make it fast and
flexible. It is designed as a library that can be used by other passes.
The SLP vectorizer is in early development stages but can already vectorize
and accelerate many programs in the LLVM test suite.
======================= ============
Benchmark Name Gain
======================= ============
Misc/flops-7 -32.70%
Misc/matmul_f64_4x4 -23.23%
Olden/power -21.45%
Misc/flops-4 -14.90%
ASC_Sequoia/AMGmk -13.85%
TSVC/LoopRerolling-flt -11.76%
Misc/flops-6 -9.70%
Misc/flops-5 -8.54%
Misc/flops -8.12%
TSVC/NodeSplitting-dbl -6.96%
Misc-C++/sphereflake -6.74%
Ptrdist/yacr2 -6.31%
======================= ============