RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-26 12:43:36 +01:00
Code Issues Projects Releases Wiki Activity

[Docs] Improve SLP code snippet

Browse Source 
New C code snippet is more viable for SLP vectorization in most architectures.

Patch by: @lsandov1 (Leonardo Sandoval)

Differential Revision: https://reviews.llvm.org/D70866
This commit is contained in:
Sanjay Patel 2019-12-09 17:07:30 -05:00
parent 92322a8310
commit 34ceb00312
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
docs/Vectorizers.rst
View File

@ -418,8 +418,10 @@ into vector operations.
.. code-block:: c++
void foo(int a1, int a2, int b1, int b2, int *A) {
A[0] = a1*(a1 + b1)/b1 + 50*b1/a1;
A[1] = a2*(a2 + b2)/b2 + 50*b2/a2;
A[0] = a1*(a1 + b1);
A[1] = a2*(a2 + b2);
A[2] = a1*(a1 + b1);
A[3] = a2*(a2 + b2);
}
The SLP-vectorizer processes the code bottom-up, across basic blocks, in search of scalars to combine.