On Mon, Mar 12, 2012 at 6:48 PM, H.J. Lu <hongjiu...@intel.com> wrote:
> Trunk can now use SImode or DImode for Pmode with -mx32. Pmode == SImode > will avoid many conversions from SImode to DImode: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50797 > > It will use 0x67 address size prefix instead. This patch adds a new > command line option, -maddress-mode=short|long, for x86. Any comments? I think this is good option, I as a developer will be able to benchmark different approaches for new target with this flag. > 2012-03-12 H.J. Lu <hongjiu...@intel.com> > > * config/i386/i386-opts.h (pmode): New. > > * config/i386/i386.c (ix86_option_override_internal): Properly > check and set ix86_pmode. > > * config/i386/i386.h (Pmode): Check ix86_pmode instead of > TARGET_64BIT. > > * config/i386/i386.opt (maddress-mode=): New. > > * doc/invoke.texi: Document -maddress-mode=short|long for x86. Please refer to PR target/50797 in the ChangeLog. The patch is technically OK for mainline, Joseph - can you please review option stuff? I have also added Gerald to CC, to check if everything is OK with added documentation. Thanks, Uros.
