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| author | Sanjay Patel <spatel@rotateright.com> | 2019-12-09 17:07:30 -0500 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-12-10 09:32:40 -0500 |
| commit | a0c558ee4cc0f8cd1d30edac5f4fbdedb18eff21 (patch) | |
| tree | 56a0b22fdc592f582f5189c5949b2293b38dbb0d /llvm/docs/Vectorizers.rst | |
| parent | 1b2842bf902a8b52acbef2425120533b63be5ae3 (diff) | |
| download | bcm5719-llvm-a0c558ee4cc0f8cd1d30edac5f4fbdedb18eff21.tar.gz bcm5719-llvm-a0c558ee4cc0f8cd1d30edac5f4fbdedb18eff21.zip | |
[Docs] Improve SLP code snippet
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
Diffstat (limited to 'llvm/docs/Vectorizers.rst')
| -rw-r--r-- | llvm/docs/Vectorizers.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/docs/Vectorizers.rst b/llvm/docs/Vectorizers.rst index fd1525c00ca..f8477f20f03 100644 --- a/llvm/docs/Vectorizers.rst +++ b/llvm/docs/Vectorizers.rst @@ -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. |
