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? -- H.J.
