performance Archives | C++ Team Blog

JCC Erratum Mitigation in MSVC

Gautham Beeraka (Intel Americas Inc)February 4, 2020Feb 4, 202002/4/20

The content of this blog was provided by Gautham Beeraka from Intel Corporation. Intel recently announced Jump Conditional Code (JCC) Erratum which can occur in some of its processors. The MSVC team has been working with Intel to provide a software fix in the compiler to mitigate the performance impact of the microcode update that prevents ...

MSVC Backend Updates in Visual Studio 2019 Versions 16.3 and 16.4

Kevin CadieuxJanuary 28, 2020Jan 28, 202001/28/20

Versions 16.3 and 16.4 of Visual Studio 2019 brought many new improvements in code generation quality, build throughput, and security. If you still haven’t downloaded your copy, here is a brief overview of what you’ve been missing out on. Demonstration of C++ Build Insights, a new set of build analysis tools in Visual Studio 2019 ...

Game performance improvements in Visual Studio 2019 version 16.2

Natalia GlagolevaAugust 8, 2019Aug 8, 201908/8/19

This spring Gratian Lup described in his blog post the improvements for C++ game development in Visual Studio 2019. From Visual Studio 2019 version 16.0 to Visual Studio 2019 version 16.2 we’ve made some more improvements. On the Infiltrator Demo we’ve got 2–3% performance wins for the most CPU-intensive parts of the game. Throughput A...

Improving the Performance of Standard Library Functions

Kirsten LeeJuly 30, 2019Jul 30, 201907/30/19

In Visual Studio 2019 version 16.2 we improved the codegen of several standard library functions. Guided by your feedback on Developer Community (Inlining std::lldiv and Improved codegen for std::fmin, std::fmax, std::round, std::trunc) we focused on the variants of standard division (std::div, std::ldiv, std::lldiv) and std::isnan. ...

Improved Linker Fundamentals in Visual Studio 2019

Russell HadleyJuly 25, 2019Jul 25, 201907/25/19

On the C++ team we’ve heard loud and clear from users that build times are a pain point. We’ve continued our focus on improving the step, linking, that dominates F5 build times. Fast F5 build times, or iteration build times, are a key contributor to developer productivity and we felt that there was a large opportunity so we narrowed in on ...

Inlining Decisions in Visual Studio

Terry MahaffeyJuly 24, 2019Jul 24, 201907/24/19

Introduction My name is Terry Mahaffey and I work on the code generation team in MSVC. Lately I’ve been doing some work on our inliner and I wanted to give a brief introduction to it before later diving into some of the changes we’ll be shipping. Inlining is perhaps the most important optimization a compiler performs. In addition to ...

Accelerating Compute-Intensive Workloads with Intel® AVX-512

Intel CorporationApril 19, 2019Apr 19, 201904/19/19

This guest post was authored by Junfeng Dong, John Morgan, and Li Tian from Intel Corporation. Introduction Last year we introduced Intel® Advanced Vector Extensions 512 (Intel® AVX-512) support in Microsoft* Visual Studio* 2017 through this VC++ blog post. In this follow-on post, we cover some examples to give you a taste of how Intel® ...

Visual Studio Code C/C++ extension: March 2019 Update

Tara RajApril 4, 2019Apr 4, 201904/4/19

The March 2019 update of the Visual Studio Code C/C++ extension is now available. This release includes many new features and bug fixes, including IntelliSense caching, Build and Debug Active File, and configuration squiggles. For a full list of this release’s improvements, check out our release notes on GitHub. IntelliSense Cache (AutoPCH...

SIMD Extension to C++ OpenMP in Visual Studio

Hongtao YuMarch 27, 2019Mar 27, 201903/27/19

In the era of ubiquitous AI applications there is an emerging demand of the compiler accelerating computation-intensive machine-learning code for existing hardware. Such code usually does mathematical computation like matrix transformation and manipulation and it is usually in the form of loops. The SIMD extension of OpenMP provides users an ...

Game performance and compilation time improvements in Visual Studio 2019

Gratian LupMarch 19, 2019Mar 19, 201903/19/19

The C++ compiler in Visual Studio 2019 includes several new optimizations and improvements geared towards increasing the performance of games and making game developers more productive by reducing the compilation time of large projects. Although the focus of this blog post is on the game industry, these improvements apply to most C++ ...

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