On Wed, 21 Aug 2013, Zhenqiang Chen wrote: > SHORT_CIRCUIT expression will be converted to CCMP expressions > at the end of front-end.
That doesn't sound like the right place to me. We want the same code to be generated whether users write && and || directly or write corresponding sequences of if conditions. In general we want to move away from optimizing complicated expressions in fold-const, towards having GIMPLE passes that detect the relevant patterns however they were written (and without needing to combine GIMPLE back into trees for passing through the old folder). So, I think you should detect this at some point in the GIMPLE optimizations rather than changing fold-const at all (and as a consequence, you then shouldn't need to change front-end pretty-printers). -- Joseph S. Myers jos...@codesourcery.com
