------- Comment #24 from bonzini at gnu dot org 2006-04-03 11:20 ------- Subject: Bug 19653
Author: bonzini Date: Mon Apr 3 11:20:07 2006 New Revision: 112637 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=112637 Log: 2005-08-08 Paolo Bonzini <[EMAIL PROTECTED]> Dale Johannesen <[EMAIL PROTECTED]> 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. Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386-protos.h trunk/gcc/config/i386/i386.c trunk/gcc/config/i386/i386.h trunk/gcc/config/i386/i386.md trunk/gcc/doc/tm.texi trunk/gcc/regclass.c trunk/gcc/reload.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19653
