Build binutils with Profile Guided Optimization (PGO) and LTO

Packages describing “pgo” as local USE flag

Package “pgo” Flag Description
sys-devel/binutils-hppa64 Build binutils with Profile Guided Optimization (PGO) and LTO
mail-client/thunderbird Add support for profile-guided optimization using gcc-4.5, for faster binaries. This option will double the compile time.
dev-lang/swi-prolog Optimize the build using Profile Guided Optimization (PGO)
sys-devel/gcc Build GCC using Profile Guided Optimization (PGO). GCC will build itself and then analyze the just-built binary and then rebuild itself using the data obtained from analysis of codepaths taken. It does not affect whether GCC itself supports PGO when building other software. This substantially increases the build time needed for building GCC itself.
sys-devel/binutils Build binutils with Profile Guided Optimization (PGO) and LTO
dev-lang/gnat-gpl Build GCC using Profile Guided Optimization (PGO)
www-client/chromium Build with Profile Guided Optimizations (2-stage compilation)
app-shells/bash Optimize the build using Profile Guided Optimization (PGO)
www-client/firefox Add support for profile-guided optimization for faster binaries - this option will double the compile time
dev-lang/python Optimize the build using Profile Guided Optimization (PGO) by running Python's test suite and collecting statistics based on its performance. This will take longer to build.

All packages providing a “pgo” USE flag (10)