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h8300.c (shift_alg_si): Use special code for 25-bit shifts on H8/S.

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* config/h8300/h8300.c (shift_alg_si): Use special code for
	25-bit shifts on H8/S.
	(get_shift_alg): Generate special code for 25-bit shifts on
	H8/S.

From-SVN: r46991
This commit is contained in:
Kazu Hirata 2001-11-13 21:00:28 +00:00 committed by Kazu Hirata
parent 819138ac7b
commit 4a4ae92254
2 changed files with 20 additions and 4 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2001-11-13 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (shift_alg_si): Use special code for
25-bit shifts on H8/S.
(get_shift_alg): Generate special code for 25-bit shifts on
H8/S.
2001-11-13 Jakub Jelinek <jakub@redhat.com>
* emit-rtl.c (adjust_address_1): Add ADJUST argument.

17
gcc/config/h8300/h8300.c
View File

@ -2273,15 +2273,15 @@ static const enum shift_alg shift_alg_si[3][3][32] = {
{ INL, INL, INL, INL, INL, INL, INL, INL,
INL, INL, INL, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */
SPC, SPC, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */
{ INL, INL, INL, INL, INL, INL, INL, INL,
INL, INL, INL, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_LSHIFTRT */
SPC, SPC, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_LSHIFTRT */
{ INL, INL, INL, INL, INL, INL, INL, INL,
INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
}
};
@ -2554,18 +2554,27 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
}
}
else if (count == 24 && !TARGET_H8300)
else if ((TARGET_H8300H && count == 24)
|| (TARGET_H8300S && 24 <= count && count <= 25))
{
info->remainder = count - 24;
switch (shift_type)
{
case SHIFT_ASHIFT:
info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f0,%e0\n\tsub.w\t%f0,%f0";
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\tmov.b\t%t0,%s0\n\textu.w\t%f0\n\textu.l\t%S0";
info->shift1 = "shlr.l\t%S0";
info->shift2 = "shlr.l\t#2,%S0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "mov.w\t%e0,%f0\n\tmov.b\t%t0,%s0\n\texts.w\t%f0\n\texts.l\t%S0";
info->shift1 = "shar.l\t%S0";
info->shift2 = "shar.l\t#2,%S0";
goto end;
}
}