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2005-08-08 Paolo Bonzini <bonzini@gnu.org>
authorbonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 3 Apr 2006 11:20:07 +0000 (11:20 +0000)
committerbonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 3 Apr 2006 11:20:07 +0000 (11:20 +0000)
commit897f76b247c2985b4861f463a65403301884eaa5
treee8c7101e8fefacd29cfe88d998da545388f1d4d1
parent4e5032b1377a0543ed6b822a1cb647a76c758e89
2005-08-08  Paolo Bonzini  <bonzini@gnu.org>
    Dale Johannesen  <dalej@apple.com>

PR target/19653
* regclass.c (struct reg_pref): Update documentation.
(regclass): Set prefclass to NO_REGS if memory is the best option.
(record_reg_classes): Cope with a prefclass set to NO_REGS.
* reload.c (find_reloads): Take PREFERRED_OUTPUT_RELOAD_CLASS
into account.  For non-registers, equate an empty preferred
reload class to a `!' in the constraint; move the if clause to
do so after those that reject the insn.
(push_reload): Allow PREFERRED_*_RELOAD_CLASS to liberally
return NO_REGS.
(find_dummy_reload): Likewise.
* doc/tm.texi (Register Classes): Document what it means
if PREFERRED_*_RELOAD_CLASS return NO_REGS.
* config/i386/i386.c (ix86_preferred_reload_class): Force
using SSE registers (and return NO_REGS for floating-point
constants) if math is done with SSE.
(ix86_preferred_output_reload_class): New.
* config/i386/i386-protos.h (ix86_preferred_output_reload_class): New.
* config/i386/i386.h (PREFERRED_OUTPUT_RELOAD_CLASS): New.
* config/i386/i386.md: Remove # register preferences.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112637 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/config/i386/i386-protos.h
gcc/config/i386/i386.c
gcc/config/i386/i386.h
gcc/config/i386/i386.md
gcc/doc/tm.texi
gcc/regclass.c
gcc/reload.c