MySQL Compiler Benchmark

Scripts to build mysqld with a custom clang compiler, additional compiler options and feedback directed optimizations. Also includes benchmarking using sysbench oltp_* scripts.

Usage

1. Download mysql-server-mysql-8.0.21
   a. git clone [email protected]:mysql/mysql-server.git
   b. git fetch --all --tags
   c. git checkout tags/mysql-8.0.21 -b mysql-8.0.21-branch
2. Patch the cmake files using lld_build.patch provided.
3. Install prerequisites: sysbench libssl-dev bison.
4. Copy the makefile into a new directory in the root of mysql source.
5. Build the fdo optimized version using make pgo-vanilla-mysqld