maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[Doc] Document "Splat" in the lexicon 

Patch by Wei-Ren Chen (陳韋任)!

Differential Revision: https://reviews.llvm.org/D32964

llvm-svn: 302950
This commit is contained in:
Sanjay Patel 2017-05-12 21:30:31 +00:00
parent 1b8589407b
commit 2413af2174
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
llvm/docs/Lexicon.rst
View File

@ -249,6 +249,14 @@ S
Superword-Level Parallelism, same as :ref:`Basic-Block Vectorization Superword-Level Parallelism, same as :ref:`Basic-Block Vectorization
<lexicon-bb-vectorization>`. <lexicon-bb-vectorization>`.
**Splat**
Splat refers to a vector of identical scalar elements.
The term is based on the PowerPC Altivec instructions that provided
this functionality in hardware. For example, "vsplth" and the corresponding
software intrinsic "vec_splat()". Examples of other hardware names for this
action include "duplicate" (ARM) and "broadcast" (x86).
**SRoA** **SRoA**
Scalar Replacement of Aggregates Scalar Replacement of Aggregates