diff options
| author | Kazu Hirata <kazu@hxi.com> | 2001-11-12 20:02:32 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2001-11-12 20:02:32 +0000 |
| commit | dd69e230b2f9fc44aec3a7dd584a89407335818b (patch) | |
| tree | bf04e3f438279bb65d8336a419286f48bf82d74d | |
| parent | e0f19bd096a6151cbb45790588589de72a7d60e9 (diff) | |
| download | gcc-dd69e230b2f9fc44aec3a7dd584a89407335818b.zip gcc-dd69e230b2f9fc44aec3a7dd584a89407335818b.tar.gz gcc-dd69e230b2f9fc44aec3a7dd584a89407335818b.tar.bz2 | |
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
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.c | 61 |
2 files changed, 49 insertions, 19 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 49a9004..91e86f2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 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. diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index 29559bb..e31ddfa 100644 --- a/gcc/config/h8300/h8300.c +++ b/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; } } |