+2010-05-03 David Ung <davidu@mips.com>
+ James E. Wilson <wilson@codesourcery.com>
+
+ * config/mip/mips.c (mips_output_division): When GENERATE_DIVIDE_TRAPS,
+ emit the trap instruction before the divide for TUNE_74K.
+
2010-05-03 Steven Bosscher <steven@gcc.gnu.org>
* doc/tm.texi (defmac SMALL_REGISTER_CLASSES): Remove.
/* Subroutines used for MIPS code generation.
Copyright (C) 1989, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by A. Lichnewsky, lich@inria.inria.fr.
Changes by Michael Meissner, meissner@osf.org.
s = "bnez\t%2,1f\n\tbreak\t7\n1:";
}
else if (GENERATE_DIVIDE_TRAPS)
- {
- output_asm_insn (s, operands);
- s = "teq\t%2,%.,7";
- }
+ {
+ /* Avoid long replay penalty on load miss by putting the trap before
+ the divide. */
+ if (TUNE_74K)
+ output_asm_insn ("teq\t%2,%.,7", operands);
+ else
+ {
+ output_asm_insn (s, operands);
+ s = "teq\t%2,%.,7";
+ }
+ }
else
{
output_asm_insn ("%(bne\t%2,%.,1f", operands);