livedoor ニュース

LLVM 3.3新機能、スーパーワードレベル並列化

来月にリリースが予定されているLLVM Clang 3.3で導入される新しい最適化機能のひとつ「SLPベクタライザ」に関して、実際にどのような機能が導入されるのかが「LLVM 3.3 Vectorization Improvements」で紹介された。SPL (Superword-Level Parallelism)はループ・ベクタライゼー ...
IEEE

Super-Node SLP: Optimized Vectorization for Code Sequences Containing Operators and Their ...

Abstract: SLP Auto-vectorization converts straight-line code into vector code. It scans input code for groups of instructions that can be combined into vectors and replaces them with their ...
GitHub

[SLP] Overlapping vector trees are unable to vectorize due to ExtractElement cost

In the below example, there are two SLP reduction vectorization opportunities that share the same load. On their own, they are both profitable. However, when together, neither is able to vectorize ...
InfoQ

LLVM 3.3、C++11に完全準拠

ログインして、InfoQのすべての体験をアンロックしましょう！お気に入りの著者やトピックの最新情報を入手し、コンテンツと交流し、限定リソースをダウンロードできます。 クラウドコンピューティングの登場以降、ソフトウェア業界は大きな変革の中に ...
GitHub

Upstream LLVM SLP vectorizer change requires the correct triple

We recently encountered a performance regression in one of our triton kernels and identified the culprit as the upstream LLVM SLP vectorization pass change (llvm/llvm-project@88e7b8b / ...
InfoWorld

What is LLVM? The power behind Swift, Rust, Clang, and more

The development landscape is ripe with new languages and improvements on existing ones. Mozilla’s Rust, Apple’s Swift, Kotlin from JetBrains, and the experimental Python variant Mojo (and many others) ...