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h8300.c (shift_alg_hi): Improve the 15-bit logical shifts on H8/300.

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* config/h8300/h8300.c (shift_alg_hi): Improve the 15-bit
	logical shifts on H8/300.
	(shift_alg_si): Improve several shifts on H8/300.
	(get_shift_alg): Likewise.

From-SVN: r49708
This commit is contained in:
Kazu Hirata 2002-02-12 15:31:54 +00:00 committed by Kazu Hirata
parent a36a47ad85
commit 1e41e86681
2 changed files with 96 additions and 23 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2002-02-12 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (shift_alg_hi): Improve the 15-bit
logical shifts on H8/300.
(shift_alg_si): Improve several shifts on H8/300.
(get_shift_alg): Likewise.
2002-02-12 Graham Stott <grahams@redhat.com>
* config/pa/pa.c (compute_movstrsi_length): Fix typos.

112
gcc/config/h8300/h8300.c
View File

@ -2012,9 +2012,9 @@ static const enum shift_alg shift_alg_hi[3][3][16] = {
/* 0 1 2 3 4 5 6 7 */
/* 8 9 10 11 12 13 14 15 */
{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_ASHIFT */
SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_LSHIFTRT */
SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
},
@ -2051,16 +2051,16 @@ static const enum shift_alg shift_alg_si[3][3][32] = {
/* 24 25 26 27 28 29 30 31 */
{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
SPC, SPC, SPC, SPC, SPC, LOP, LOP, LOP,
SPC, SPC, SPC, SPC, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, LOP, LOP, LOP, LOP, LOP,
SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, SPC, SPC, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
},
{
/* TARGET_H8300H */
@ -2282,16 +2282,28 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
}
}
else if (count == 15 && shift_type == SHIFT_ASHIFTRT)
else if (count == 15)
{
info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0";
goto end;
switch (shift_type)
{
case SHIFT_ASHIFT:
info->special = "bld\t#0,%s0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#7,%t0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "bld\t#7,%t0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#0,%s0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0";
goto end;
}
}
abort ();
case SIshift:
if (count == 8 && TARGET_H8300)
if (TARGET_H8300 && 8 <= count && count <= 9)
{
info->remainder = count - 8;
switch (shift_type)
{
case SHIFT_ASHIFT:
@ -2299,6 +2311,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
case SHIFT_LSHIFTRT:
info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tsub.b\t%z0,%z0";
info->shift1 = "shlr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tshll\t%z0\n\tsubx\t%z0,%z0";
@ -2320,6 +2333,20 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
}
}
else if (count == 15 && TARGET_H8300)
{
switch (shift_type)
{
case SHIFT_ASHIFT:
abort ();
case SHIFT_LSHIFTRT:
info->special = "bld\t#7,%z0\n\tmov.w\t%e0,%f0\n\txor\t%y0,%y0\n\txor\t%z0,%z0\n\trotxl\t%w0,%w0\n\trotxl\t%x0,%x0\n\trotxl\t%y0,%y0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "bld\t#7,%z0\n\tmov.w\t%e0,%f0\n\trotxl\t%w0,%w0\n\trotxl\t%x0,%x0\n\tsubx\t%y0,%y0\n\tsubx\t%z0,%z0";
goto end;
}
}
else if (count == 15 && !TARGET_H8300)
{
switch (shift_type)
@ -2334,7 +2361,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
abort ();
}
}
else if ((TARGET_H8300 && count == 16)
else if ((TARGET_H8300 && 16 <= count && count <= 20)
|| (TARGET_H8300H && 16 <= count && count <= 19)
|| (TARGET_H8300S && 16 <= count && count <= 21))
{
@ -2344,24 +2371,63 @@ get_shift_alg (shift_type, shift_mode, count, info)
{
case SHIFT_ASHIFT:
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0";
info->shift1 = "shll.l\t%S0";
info->shift2 = "shll.l\t#2,%S0";
if (TARGET_H8300)
{
info->shift1 = "add.w\t%e0,%e0";
}
else
{
info->shift1 = "shll.l\t%S0";
info->shift2 = "shll.l\t#2,%S0";
}
goto end;
case SHIFT_LSHIFTRT:
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0";
info->shift1 = "shlr.l\t%S0";
info->shift2 = "shlr.l\t#2,%S0";
if (TARGET_H8300)
{
info->shift1 = "shlr\t%x0\n\trotxr\t%w0";
}
else
{
info->shift1 = "shlr.l\t%S0";
info->shift2 = "shlr.l\t#2,%S0";
}
goto end;
case SHIFT_ASHIFTRT:
if (TARGET_H8300)
info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0";
{
info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0";
info->shift1 = "shar\t%x0\n\trotxr\t%w0";
}
else
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
info->shift1 = "shar.l\t%S0";
info->shift2 = "shar.l\t#2,%S0";
{
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
info->shift1 = "shar.l\t%S0";
info->shift2 = "shar.l\t#2,%S0";
}
goto end;
}
}
else if (TARGET_H8300 && 24 <= count && count <= 28)
{
info->remainder = count - 24;
switch (shift_type)
{
case SHIFT_ASHIFT:
info->special = "mov.b\t%w0,%z0\n\tsub.b\t%y0,%y0\n\tsub.w\t%f0,%f0";
info->shift1 = "shll.b\t%z0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "mov.b\t%z0,%w0\n\tsub.b\t%x0,%x0\n\tsub.w\t%e0,%e0";
info->shift1 = "shlr.b\t%w0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "mov.b\t%z0,%w0\n\tbld\t#7,%w0\n\tsubx\t%x0,%x0\n\tsubx\t%x0,%x0\n\tsubx\t%x0,%x0";
info->shift1 = "shar.b\t%w0";
goto end;
}
}
else if ((TARGET_H8300H && count == 24)
|| (TARGET_H8300S && 24 <= count && count <= 25))
{