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riscv-gcc-1
Commit dd69e230 by Kazu Hirata Committed by Kazu Hirata
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h8300.c (shift_alg_si): Use special code for 15-bit logical shifts and 31-bit logical shifts. 

	* config/h8300/h8300.c (shift_alg_si): Use special code for
	15-bit logical shifts and 31-bit logical shifts.
	(get_shift_alg): Generate special code for 15-bit and 31-bit
	logical shifts.

From-SVN: r46965
parent e0f19bd0
Showing with 49 additions and 19 deletions
gcc/ChangeLog
2001-11-12 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (shift_alg_si): Use special code for
15-bit logical shifts and 31-bit logical shifts.
(get_shift_alg): Generate special code for 15-bit and 31-bit
logical shifts.
2001-11-12 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (shift_alg_qi): Use rotations when
doing 6-bit logical shifts on H8/S.
(shift_alg_qi): Use special code for 21-bit shifts on H8/S.
......
gcc/config/h8300/h8300.c
......@@ -2252,13 +2252,13 @@ static const enum shift_alg shift_alg_si[3][3][32] = {
/* 16 17 18 19 20 21 22 23 */
/* 24 25 26 27 28 29 30 31 */
{ INL, INL, INL, INL, INL, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, ROT }, /* SHIFT_ASHIFT */
SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */
{ INL, INL, INL, INL, INL, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */
SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_LSHIFTRT */
{ INL, INL, INL, INL, INL, LOP, LOP, LOP,
SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP,
......@@ -2271,13 +2271,13 @@ static const enum shift_alg shift_alg_si[3][3][32] = {
/* 16 17 18 19 20 21 22 23 */
/* 24 25 26 27 28 29 30 31 */
{ INL, INL, INL, INL, INL, INL, INL, INL,
INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
INL, INL, INL, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, ROT }, /* SHIFT_ASHIFT */
SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */
{ INL, INL, INL, INL, INL, INL, INL, INL,
INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
INL, INL, INL, LOP, LOP, LOP, LOP, SPC,
SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP,
SPC, LOP, LOP, LOP, ROT, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */
SPC, LOP, 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,
......@@ -2514,6 +2514,18 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
}
}
else if (count == 15 && !TARGET_H8300)
{
switch (shift_type)
{
case SHIFT_ASHIFT:
info->special = "shlr.w\t%e0\n\tmov.w\t%f0,%e0\n\txor.w\t%f0,%f0\n\trotxr.l\t%S0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "shll.w\t%e0\n\tmov.w\t%e0,%f0\n\txor.w\t%e0,%e0\n\trotxl.l\t%S0";
goto end;
}
}
else if ((TARGET_H8300 && count == 16)
|| (TARGET_H8300H && 16 <= count && count <= 19)
|| (TARGET_H8300S && 16 <= count && count <= 21))
......@@ -2559,22 +2571,33 @@ get_shift_alg (shift_type, shift_mode, count, info)
}
else if (count == 31)
{
if (shift_type == SHIFT_ASHIFTRT)
if (TARGET_H8300)
{
if (TARGET_H8300)
info->special = "shll\t%z0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0";
else
info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0";
goto end;
switch (shift_type)
{
case SHIFT_ASHIFT:
info->special = "sub.w\t%e0,%e0\n\tshlr\t%w0\n\tmov.w\t%e0,%f0\n\trotxr\t%z0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "sub.w\t%f0,%f0\n\tshll\t%z0\n\tmov.w\t%f0,%e0\n\trotxl\t%w0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "shll\t%z0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0";
goto end;
}
}
else
{
if (TARGET_H8300)
switch (shift_type)
{
if (shift_type == SHIFT_ASHIFT)
info->special = "sub.w\t%e0,%e0\n\tshlr\t%w0\n\tmov.w\t%e0,%f0\n\trotxr\t%z0";
else
info->special = "sub.w\t%f0,%f0\n\tshll\t%z0\n\tmov.w\t%f0,%e0\n\trotxl\t%w0";
case SHIFT_ASHIFT:
info->special = "shlr.l\t%S0\n\txor.l\t%S0,%S0\n\trotxr.l\t%S0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "shll.l\t%S0\n\txor.l\t%S0,%S0\n\trotxl.l\t%S0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0";
goto end;
}
}
......
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