C++ Team Blog

The latest in C++, Visual Studio, VS Code, and vcpkg from the MSFT C++ team

performance - C++ Team Blog

VS Code C++ Extension 1.19 Release: 3.6x faster Go To Symbol & 1.5x faster colorization

April 18, 2024 Apr 18, 2024 04/18/24
Alexandra Kemper
With our recent 1.19 release, performance was our biggest focus for the C++ Extension in Visual Studio Code. This included features like progressive population of IntelliSense results and faster symbol searching. With these enhancements, you can begin writing C++ code when opening a file quicker than ever before. Additionally, we also added ...

MSVC ARM64 Optimizations in Visual Studio 2022 17.7

September 28, 2023 Sep 28, 2023 09/28/23
Hongyon Suauthai (ARM)
In Visual Studio 2022 version 17.6 we added a host of new ARM64 optimizations. In this 2nd edition of our blog, we will highlight some of the performance improvements to MSVC ARM64 compiler backend, we will discuss key optimizations in the Visual Studio 2022 version 17.7 for both scalar ISA and SIMD ISA (NEON). We started introducing these ...

MSVC Machine-Independent Optimizations in Visual Studio 2022 17.7

September 25, 2023 Sep 25, 2023 09/25/23
Troy Johnson
This blog post presents a selection of machine-independent optimizations that were added between Visual Studio versions 17.4 (released November 8, 2022) and 17.7 P3 (released July 11, 2023). Each optimization below shows assembly code for both X64 and ARM64 to show the machine-independent nature of the optimization. Optimizing Memory Across ...

Improving the State of Debug Performance in C++

December 13, 2022 Dec 13, 2022 12/13/22
Cameron DaCamara
In this blog we will explore one change the MSVC compiler has implemented in an effort to improve the codegen quality of applications in debug mode. We will highlight what the change does, and how it could be extended for the future. If debug performance is something you care about for your C++ projects, then Visual Studio 2022 version 17.5 is...

2x-3x Performance Improvements for Debug Builds

May 7, 2021 May 7, 2021 05/7/21
Pranav Kant
We have made substantial runtime performance improvements in the x86/x64 C++ compiler for Visual Studio's default debug configuration. For Visual Studio 2019 version 16.10 Preview 2, we measure 2x - 3x speedup for programs compiled in debug mode. These improvements come from reducing the overhead introduced by runtime checks (/...