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97 lines
3.3 KiB
97 lines
3.3 KiB
15 years ago
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/*
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unrolled operations, for better Pentium FPU scheduling
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Copyright (C) 2001 Martin Vogt
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation.
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For more information look at the file COPYRIGHT in this package
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*/
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#ifndef __OP_H
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#define __OP_H
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/**
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The Pentium has two pipelined FPUs which makes it possible
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to do two operations in one cycle.
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(If you are lucky)
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*/
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#define PTR_DIST (1024)
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#define OS r1=vp1[0] * dp[0]; \
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r2=vp1[PTR_DIST-0] * dp[0]; \
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dp++;
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#define XX1 vp1+=15;dp++;
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#define XX2 r1+=vp1[0] * dp[-1]; \
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r2+=vp1[PTR_DIST-0] * dp[-1];
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#define OP_END(val) vp1-=val;dp+=val;
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#define OP_END_1(vVal,dVal) vp1+=(vVal-dVal),dp+=dVal
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// this is OP_END(x);XX1; together:
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#define OP_END_2(vVal) vp1+=(15-vVal),dp+=vVal+1
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// check this to test pipelining
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#define SCHEDULE1(op,r1,r2) r1;op;r2;
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#define SCHEDULE2(op,r1,r2) op;r1;r2;
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#define SCHEDULE(a,b,c) SCHEDULE2(a,b,c);
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#define OP r1+=vp1[-1] * dp[0]; \
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r2+=vp1[PTR_DIST-1] * dp[0];
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#define OP2 SCHEDULE(OP ,r1+=vp1[-2] * dp[1] ,r2+=vp1[PTR_DIST-2] *dp[1]);
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#define OP3 SCHEDULE(OP2 ,r1+=vp1[-3] * dp[2] ,r2+=vp1[PTR_DIST-3] *dp[2]);
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#define OP4 SCHEDULE(OP3 ,r1+=vp1[-4] * dp[3] ,r2+=vp1[PTR_DIST-4] *dp[3]);
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#define OP5 SCHEDULE(OP4 ,r1+=vp1[-5] * dp[4] ,r2+=vp1[PTR_DIST-5] *dp[4]);
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#define OP6 SCHEDULE(OP5 ,r1+=vp1[-6] * dp[5] ,r2+=vp1[PTR_DIST-6] *dp[5]);
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#define OP7 SCHEDULE(OP6 ,r1+=vp1[-7] * dp[6] ,r2+=vp1[PTR_DIST-7] *dp[6]);
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#define OP8 SCHEDULE(OP7 ,r1+=vp1[-8] * dp[7] ,r2+=vp1[PTR_DIST-8] *dp[7]);
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#define OP9 SCHEDULE(OP8 ,r1+=vp1[-9] * dp[8] ,r2+=vp1[PTR_DIST-9] *dp[8]);
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#define OP10 SCHEDULE(OP9 ,r1+=vp1[-10] * dp[9] ,r2+=vp1[PTR_DIST-10] *dp[9]);
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#define OP11 SCHEDULE(OP10,r1+=vp1[-11] * dp[10],r2+=vp1[PTR_DIST-11] *dp[10]);
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#define OP12 SCHEDULE(OP11,r1+=vp1[-12] * dp[11],r2+=vp1[PTR_DIST-12] *dp[11]);
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#define OP13 SCHEDULE(OP12,r1+=vp1[-13] * dp[12],r2+=vp1[PTR_DIST-13] *dp[12]);
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#define OP14 SCHEDULE(OP13,r1+=vp1[-14] * dp[13],r2+=vp1[PTR_DIST-14] *dp[13]);
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#define OP15 SCHEDULE(OP14,r1+=vp1[-15] * dp[14],r2+=vp1[PTR_DIST-15] *dp[14]);
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/*
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#define OP r1+=vp1[-1] * dp[0]; \
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r2+=vp2[-1] * dp[0];
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#define OP2 SCHEDULE(OP ,r1+=vp1[-2] * dp[1] ,r2+=vp2[-2] * dp[1]);
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#define OP3 SCHEDULE(OP2 ,r1+=vp1[-3] * dp[2] ,r2+=vp2[-3] * dp[2]);
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#define OP4 SCHEDULE(OP3 ,r1+=vp1[-4] * dp[3] ,r2+=vp2[-4] * dp[3]);
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#define OP5 SCHEDULE(OP4 ,r1+=vp1[-5] * dp[4] ,r2+=vp2[-5] * dp[4]);
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#define OP6 SCHEDULE(OP5 ,r1+=vp1[-6] * dp[5] ,r2+=vp2[-6] * dp[5]);
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#define OP7 SCHEDULE(OP6 ,r1+=vp1[-7] * dp[6] ,r2+=vp2[-7] * dp[6]);
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#define OP8 SCHEDULE(OP7 ,r1+=vp1[-8] * dp[7] ,r2+=vp2[-8] * dp[7]);
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#define OP9 SCHEDULE(OP8 ,r1+=vp1[-9] * dp[8] ,r2+=vp2[-9] * dp[8]);
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#define OP10 SCHEDULE(OP9 ,r1+=vp1[-10] * dp[9] ,r2+=vp2[-10] * dp[9]);
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#define OP11 SCHEDULE(OP10,r1+=vp1[-11] * dp[10],r2+=vp2[-11] * dp[10]);
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#define OP12 SCHEDULE(OP11,r1+=vp1[-12] * dp[11],r2+=vp2[-12] * dp[11]);
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#define OP13 SCHEDULE(OP12,r1+=vp1[-13] * dp[12],r2+=vp2[-13] * dp[12]);
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#define OP14 SCHEDULE(OP13,r1+=vp1[-14] * dp[13],r2+=vp2[-14] * dp[13]);
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#define OP15 SCHEDULE(OP14,r1+=vp1[-15] * dp[14],r2+=vp2[-15] * dp[14]);
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*/
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#endif
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