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Unroll pmap_copy_page() and pmap_zero_page() inlined loops even further.

This commit is contained in:
jonathan 1997-07-23 05:41:17 +00:00
parent ecebe74498
commit 83ebfc3545
1 changed files with 48 additions and 4 deletions
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52
sys/arch/mips/mips/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.27 1997/06/22 07:43:02 jonathan Exp $ */
/* $NetBSD: pmap.c,v 1.28 1997/07/23 05:41:17 jonathan Exp $ */
/*
* Copyright (c) 1992, 1993
@ -1275,7 +1275,22 @@ pmap_zero_page(phys)
p[1] = 0;
p[2] = 0;
p[3] = 0;
p += 4;
p[4] = 0;
p[5] = 0;
p[6] = 0;
p[7] = 0;
p[8] = 0;
p[9] = 0;
p[10] = 0;
p[11] = 0;
p[12] = 0;
p[13] = 0;
p[14] = 0;
p[15] = 0;
p += 16;
} while (p != end);
#ifdef MIPS3
if (CPUISMIPS3) {
@ -1296,6 +1311,7 @@ pmap_copy_page(src, dst)
{
register int *s, *d, *end;
register int tmp0, tmp1, tmp2, tmp3;
register int tmp4, tmp5, tmp6, tmp7;
#ifdef DEBUG
if (pmapdebug & PDB_FOLLOW)
@ -1320,8 +1336,36 @@ pmap_copy_page(src, dst)
d[1] = tmp1;
d[2] = tmp2;
d[3] = tmp3;
s += 4;
d += 4;
tmp4 = s[4];
tmp5 = s[5];
tmp6 = s[6];
tmp7 = s[7];
d[4] = tmp4;
d[5] = tmp5;
d[6] = tmp6;
d[7] = tmp7;
tmp0 = s[8];
tmp1 = s[9];
tmp2 = s[10];
tmp3 = s[11];
d[8] = tmp0;
d[9] = tmp1;
d[10] = tmp2;
d[11] = tmp3;
tmp4 = s[12];
tmp5 = s[13];
tmp6 = s[14];
tmp7 = s[15];
d[12] = tmp4;
d[13] = tmp5;
d[14] = tmp6;
d[15] = tmp7;
s += 16;
d += 16;
} while (s != end);
#ifdef MIPS3
if (CPUISMIPS3) {