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Checkin a big speedup for sparc v8 CPUs when compiled with Workshop

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compilers.  Be sure to use -DMP_NO_MP_WORD with v8 CPUs.


git-svn-id: svn://10.0.0.236/trunk@77742 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
nelsonb%netscape.com 2000-08-31 04:59:05 +00:00
parent d4c9af8253
commit 7f3336e2a3
1 changed files with 9 additions and 1 deletions
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10
mozilla/security/nss/lib/freebl/mpi/mpi.c
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@ -35,7 +35,7 @@
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the GPL.
*
* $Id: mpi.c,v 1.21 2000-08-31 02:51:23 nelsonb%netscape.com Exp $
* $Id: mpi.c,v 1.22 2000-08-31 04:59:05 nelsonb%netscape.com Exp $
*/
#include "mpi-priv.h"
@ -3523,6 +3523,13 @@ mp_err s_mp_mul(mp_int *a, const mp_int *b)
/* }}} */
#if defined(SOLARIS)
/* This trick works on Sparc V8 CPUs with the Workshop compilers. */
#define MP_MUL_DxD(a, b, Phi, Plo) \
{ unsigned long long product = (unsigned long long)a * b; \
Plo = (mp_digit)product; \
Phi = (mp_digit)(product >> MP_DIGIT_BIT); }
#else
#define MP_MUL_DxD(a, b, Phi, Plo) \
{ mp_digit a0b1, a1b0; \
Plo = (a & MP_HALF_DIGIT_MAX) * (b & MP_HALF_DIGIT_MAX); \
@ -3538,6 +3545,7 @@ mp_err s_mp_mul(mp_int *a, const mp_int *b)
if (Plo < a1b0) \
++Phi; \
}
#endif
#if !defined(MP_ASSEMBLY_MULTIPLY)
/* c = a * b */