Hi all, According to the docs at https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html and as mentioned in https://gcc.gnu.org/ml/gcc/2016-08/msg00134.html GCC 6.2 supports an "-fcode-hoisting" option. However, in my home-built GCC 6.2 there doesn't seem to be such an option: /> /opt/gcc-explorer/gcc-6.2.0/bin/g++ --version g++ (GCC-Explorer-Build) 6.2.0 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. /> /opt/gcc-explorer/gcc-6.2.0/bin/g++ -fcode-hoisting g++: error: unrecognized command line option ‘-fcode-hoisting’; did you mean ‘-Wno-hiding’? g++: fatal error: no input files compilation terminated. /> /opt/gcc-explorer/gcc-6.2.0/bin/g++ --help=optimizers | grep hoist -fhoist-adjacent-loads Enable hoisting adjacent loads to encourage generating conditional move -fira-hoist-pressure Use IRA based register pressure calculation in RTL hoist optimizations. -ftree-phiprop Enable hoisting loads from conditional pointers. Have I missed something? The Redhat message I link above mentions this as something available in the "development versions" of the software, and I'm not sure what that means. The fact it's on the main GNU online documentation implies it ought to be in normal builds. Thanks in advance for any help, --matt
