diff options
| author | Kazu Hirata <kazu@hxi.com> | 2001-11-13 21:00:28 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2001-11-13 21:00:28 +0000 |
| commit | 4a4ae922546d1108be6301a155a86627911d4da4 (patch) | |
| tree | bc2ccc5aea48db839b3e508eb855f59eecb2bfb4 | |
| parent | 819138ac7b6e38becc5e133524c78aa46b1d5b92 (diff) | |
| download | gcc-4a4ae922546d1108be6301a155a86627911d4da4.zip gcc-4a4ae922546d1108be6301a155a86627911d4da4.tar.gz gcc-4a4ae922546d1108be6301a155a86627911d4da4.tar.bz2 | |
h8300.c (shift_alg_si): Use special code for 25-bit shifts on H8/S.
* 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
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.c | 17 |
2 files changed, 20 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e3c672f..b7acb2f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index e31ddfa..f978392 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -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; } } |