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[CMake] Default options for faster executables on MSVC

Authored by aganea on Dec 18 2018, 10:17 AM.

Description

[CMake] Default options for faster executables on MSVC

  • Disable incremental linking by default. /INCREMENTAL adds extra thunks in the EXE, which makes execution slower.
  • Set /MT (static CRT lib) by default instead of CMake's default /MD (dll CRT lib). The previous default /MD makes all DLL functions to be thunked, thus making execution slower (memcmp, memset, etc.)
  • Adds LLVM_ENABLE_INCREMENTAL_LINK which is set to OFF by default.

Differential revision: https://reviews.llvm.org/D55056

llvm-svn: 349517

Details