On Tue, 18 Sep 2012, H.J. Lu wrote: > On Tue, Sep 18, 2012 at 4:23 AM, Richard Guenther <rguent...@suse.de> wrote: > > > > This adds -Og as optimization level targeted at the devel-compile-debug > > cycle (formerly mostly tied to -O0 due to debug issues with even -O1). > > > > Discussion on g...@gcc.gnu.org at least shows interest in this, so this > > is a formal patch submission with a request for comments on the > > implementation (not necessarily on what passes are enabled and why). > > > > I have bootstrapped and tested this patch with BOOT_C/CXX_FLAGS="-Og -g" > > TARGET_CFLAGS="-Og -g" with all languages included (but -Werror disabled, > > as expected some new maybe-uninit uses pop up). > > > > Ok for trunk? > > > > Thanks, > > Richard. > > > > 2012-09-18 Richard Guenther <rguent...@suse.de> > > > > PR other/53316 > > * common.opt (optimize_debug): New variable. > > (Og): New optimization level. > > * doc/invoke.texi (Og): Document. > > * opts.c (maybe_default_option): Add debug parameter. > > (maybe_default_options): Likewise. > > (default_options_optimization): Handle -Og. > > (common_handle_option): Likewise. > > * passes.c (gate_all_optimizations): Do not run with -Og. > > (gate_all_optimizations_g): New gate, run with -Og. > > (pass_all_optimizations_g): New container pass, run with -Og. > > (init_optimization_passes): Schedule pass_all_optimizations_g > > alongside pass_all_optimizations. > > > > * gcc/testsuite/lib/c-torture.exp: Add -Og -g to default > > TORTURE_OPTIONS. > > > > Glibc must be compiled with optimization. Will -Og build glibc?
Apply the patch and check for yourself. I suppose the answer will be yes (whatever "optimization" requirements glibc has). Richard.
