Add the --enable-pgo-build[=lto] configure option. When binutils+gdb is not built together with GCC, --enable-pgo-build enables the PGO build:
1. First build with -fprofile-generate. 2. Use "make maybe-check-*" to generate profiling data and pass -i to make to ignore errors when generating profiling data. 3. Use "make clean" to remove the previous build. 4. Rebuild with -fprofile-use. Changes from V1: 1. Pass -ffat-lto-objects together with -flto=jobserver. 2. Pass -i to make to ignore "make check" errors in PGO training runs. H.J. Lu (3): GCC: Pass --plugin to AR and RANLIB Binutils: Pass --plugin to AR and RANLIB Support the PGO build for binutils+gdb Makefile.in | 67 +++++++++++++- Makefile.tpl | 63 ++++++++++++- bfd/configure | 27 +++++- binutils/configure | 27 +++++- config/gcc-plugin.m4 | 28 ++++++ configure | 139 ++++++++++++++++++++++++++- configure.ac | 80 ++++++++++++++++ gas/configure | 27 +++++- gprof/configure | 27 +++++- ld/configure | 27 +++++- libctf/configure | 27 +++++- libiberty/Makefile.in | 5 +- libiberty/aclocal.m4 | 1 + libiberty/configure | 37 ++++++++ libiberty/configure.ac | 12 +++ libtool.m4 | 25 ++++- opcodes/configure | 27 +++++- zlib/configure | 206 ++++++++++++++++++++++++++++++++++++++++- 18 files changed, 822 insertions(+), 30 deletions(-) -- 2.29.2
