From 7e803bdfd1adf24f85bffcd536ddf1725355e61e Mon Sep 17 00:00:00 2001 From: Sanjay Patel Date: Fri, 12 May 2017 21:30:31 +0000 Subject: [PATCH] [Doc] Document "Splat" in the lexicon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patch by Wei-Ren Chen (陳韋任)! Differential Revision: https://reviews.llvm.org/D32964 llvm-svn: 302950 --- docs/Lexicon.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/docs/Lexicon.rst b/docs/Lexicon.rst index 35687e25818..ebc3fb772e8 100644 --- a/docs/Lexicon.rst +++ b/docs/Lexicon.rst @@ -249,6 +249,14 @@ S Superword-Level Parallelism, same as :ref:`Basic-Block 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** Scalar Replacement of Aggregates