Update profiler guided optimization instructions in
Makefile to the latest Intel C++ compiler.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
# CXXFLAGS += -mdynamic-no-pic -no-prec-div -ipo -static -xP
# CXXFLAGS += -mdynamic-no-pic -no-prec-div -ipo -static -xP
-# Profiler guided optimization with the Intel C++ compiler. To use it, first
+# Profiler guided optimization with the Intel C++ compiler v11. To use it, first
# create the directory ./profdata if it does not already exist, and delete its
# contents if it does exist. Then compile with -prof_gen, and run the
# resulting binary for a while (for instance, do ./stockfish bench 128 1, and
# wait 15 minutes for the benchmark to complete). Then do a 'make clean', and
# recompile with -prof_use.
# create the directory ./profdata if it does not already exist, and delete its
# contents if it does exist. Then compile with -prof_gen, and run the
# resulting binary for a while (for instance, do ./stockfish bench 128 1, and
# wait 15 minutes for the benchmark to complete). Then do a 'make clean', and
# recompile with -prof_use.
-# CXXFLAGS += -prof_gen -prof_dir profdata
-# CXXFLAGS += -prof_use -prof_dir ./profdata
+# CXXFLAGS += -prof-gen -prof-dir./profdata
+# CXXFLAGS += -prof-use -ipo -prof_dir./profdata
# Profiler guided optimization with GCC. I've never been able to make this
# Profiler guided optimization with GCC. I've never been able to make this