C++ Team Blog

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 (/...