Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / x86 / fat / gmp-mparam.h

diff --git a/gmp/mpn/x86/fat/gmp-mparam.h b/gmp/mpn/x86/fat/gmp-mparam.h
new file mode 100644 (file)
index 0000000..9127d14
--- /dev/null
+++ b/gmp/mpn/x86/fat/gmp-mparam.h
@@ -0,0 +1,59 @@
+/* Fat binary x86 gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright 1991, 1993, 1994, 2000, 2001, 2002, 2003 Free Software Foundation,
+Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#define BITS_PER_MP_LIMB 32
+#define BYTES_PER_MP_LIMB 4
+
+
+/* mpn_divexact_1 is faster than mpn_divrem_1 at all sizes.  The only time
+   this might not be true currently is for actual 80386 and 80486 chips,
+   where mpn/x86/dive_1.asm might be slower than mpn/x86/divrem_1.asm, but
+   that's not worth worrying about.  */
+#define DIVEXACT_1_THRESHOLD  0
+
+/* Only some of the x86s have an mpn_preinv_divrem_1, but we set
+   USE_PREINV_DIVREM_1 so that all callers use it, and then let the
+   __gmpn_cpuvec pointer go to plain mpn_divrem_1 if there's not an actual
+   preinv.  */
+#define USE_PREINV_DIVREM_1   1
+
+/* mpn_sqr_basecase is faster than mpn_mul_basecase at all sizes, no need
+   for mpn_sqr_n to call the latter.  */
+#define SQR_BASECASE_THRESHOLD 0
+
+/* Sensible fallbacks for these, when not taken from a cpu-specific
+   gmp-mparam.h.  */
+#define MUL_KARATSUBA_THRESHOLD   20
+#define MUL_TOOM3_THRESHOLD      130
+#define SQR_KARATSUBA_THRESHOLD   30
+#define SQR_TOOM3_THRESHOLD      200
+
+/* These are values more or less in the middle of what the typical x86 chips
+   come out as.  For a fat binary it's necessary to have values for these,
+   since the defaults for MUL_FFT_TABLE and SQR_FFT_TABLE otherwise come out
+   as non-constant array initializers.  FIXME: Perhaps these should be done
+   in the cpuvec structure like other thresholds.  */
+#define MUL_FFT_TABLE  { 464, 928, 1920, 3584, 10240, 40960, 0 }
+#define MUL_FFT_MODF_THRESHOLD          400
+#define MUL_FFT_THRESHOLD              2000
+
+#define SQR_FFT_TABLE  { 528, 1184, 1920, 4608, 14336, 40960, 0 }
+#define SQR_FFT_MODF_THRESHOLD          500
+#define SQR_FFT_THRESHOLD              3000