ref: 7b7d12f633d61116de104d3920e0e24cdd7ad802
dir: /cc1/tests/test036.c/
/* See LICENSE file for copyright and license details. */
/*
name: TEST036
description: Duff's device
error:
test036.c:61: warning: type defaults to 'int' in declaration
output:
V2 K #NC
V4 K #N9
G9 I F "send
{
R5 P "to
R6 P "from
R7 I "count
\
R11 I "n
R11 R7 #I7 +I #I8 /I :I
s R7 #I8 %I
v L13 #I0
L13
e
L14
R5 @I R6 #P2 :iP @I :I
v L16 #I7
L16
R5 @I R6 #P2 :iP @I :I
v L17 #I6
L17
R5 @I R6 #P2 :iP @I :I
v L18 #I5
L18
R5 @I R6 #P2 :iP @I :I
v L19 #I4
L19
R5 @I R6 #P2 :iP @I :I
v L20 #I3
L20
R5 @I R6 #P2 :iP @I :I
v L21 #I2
L21
R5 @I R6 #P2 :iP @I :I
v L22 #I1
L22
R5 @I R6 #P2 :iP @I :I
y L14 R11 #I1 :-I #I0 >I
b
L15
t L12
L12
}
*/
/* Disgusting, no? But it compiles and runs just fine. I feel a combination of
pride and revulsion at this discovery. If no one's thought of it before,
I think I'll name it after myself.
It amazes me that after 10 years of writing C there are still
little corners that I haven't explored fully.
- Tom Duff */
send(to, from, count)
register short *to, *from;
register count;
{
register n=(count+7)/8;
switch(count%8){
case 0: do{*to = *from++;
case 7: *to = *from++;
case 6: *to = *from++;
case 5: *to = *from++;
case 4: *to = *from++;
case 3: *to = *from++;
case 2: *to = *from++;
case 1: *to = *from++;
}while(--n>0);
}
}