h8300.c (shift_alg_hi): Improve the 15-bit logical shifts on H8/300.
* 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:
parent
a36a47ad85
commit
1e41e86681
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@ -1,3 +1,10 @@
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2002-02-12 Kazu Hirata <kazu@hxi.com>
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* config/h8300/h8300.c (shift_alg_hi): Improve the 15-bit
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logical shifts on H8/300.
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(shift_alg_si): Improve several shifts on H8/300.
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(get_shift_alg): Likewise.
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2002-02-12 Graham Stott <grahams@redhat.com>
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* config/pa/pa.c (compute_movstrsi_length): Fix typos.
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@ -2012,9 +2012,9 @@ static const enum shift_alg shift_alg_hi[3][3][16] = {
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/* 0 1 2 3 4 5 6 7 */
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/* 8 9 10 11 12 13 14 15 */
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{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_ASHIFT */
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
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{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_LSHIFTRT */
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
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{ INL, INL, INL, INL, INL, LOP, LOP, SPC,
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
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},
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@ -2051,16 +2051,16 @@ static const enum shift_alg shift_alg_si[3][3][32] = {
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/* 24 25 26 27 28 29 30 31 */
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{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, LOP,
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SPC, SPC, SPC, SPC, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */
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{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
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SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC,
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SPC, SPC, SPC, LOP, LOP, LOP, LOP, LOP,
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SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */
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{ INL, INL, INL, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP,
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LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
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SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC,
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SPC, SPC, LOP, LOP, LOP, LOP, LOP, LOP,
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SPC, SPC, SPC, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */
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},
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{
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/* TARGET_H8300H */
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@ -2282,16 +2282,28 @@ get_shift_alg (shift_type, shift_mode, count, info)
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goto end;
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}
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}
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else if (count == 15 && shift_type == SHIFT_ASHIFTRT)
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else if (count == 15)
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{
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info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0";
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goto end;
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switch (shift_type)
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{
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case SHIFT_ASHIFT:
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info->special = "bld\t#0,%s0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#7,%t0";
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goto end;
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case SHIFT_LSHIFTRT:
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info->special = "bld\t#7,%t0\n\txor\t%s0,%s0\n\txor\t%t0,%t0\n\tbst\t#0,%s0";
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goto end;
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case SHIFT_ASHIFTRT:
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info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0";
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goto end;
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}
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}
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abort ();
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case SIshift:
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if (count == 8 && TARGET_H8300)
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if (TARGET_H8300 && 8 <= count && count <= 9)
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{
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info->remainder = count - 8;
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switch (shift_type)
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{
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case SHIFT_ASHIFT:
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@ -2299,6 +2311,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
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goto end;
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case SHIFT_LSHIFTRT:
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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";
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info->shift1 = "shlr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0";
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goto end;
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case SHIFT_ASHIFTRT:
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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";
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@ -2320,6 +2333,20 @@ get_shift_alg (shift_type, shift_mode, count, info)
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goto end;
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}
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}
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else if (count == 15 && TARGET_H8300)
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{
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switch (shift_type)
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{
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case SHIFT_ASHIFT:
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abort ();
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case SHIFT_LSHIFTRT:
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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";
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goto end;
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case SHIFT_ASHIFTRT:
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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";
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goto end;
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}
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}
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else if (count == 15 && !TARGET_H8300)
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{
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switch (shift_type)
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@ -2334,7 +2361,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
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abort ();
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}
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}
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else if ((TARGET_H8300 && count == 16)
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else if ((TARGET_H8300 && 16 <= count && count <= 20)
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|| (TARGET_H8300H && 16 <= count && count <= 19)
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|| (TARGET_H8300S && 16 <= count && count <= 21))
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{
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@ -2344,24 +2371,63 @@ get_shift_alg (shift_type, shift_mode, count, info)
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{
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case SHIFT_ASHIFT:
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info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0";
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info->shift1 = "shll.l\t%S0";
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info->shift2 = "shll.l\t#2,%S0";
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if (TARGET_H8300)
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{
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info->shift1 = "add.w\t%e0,%e0";
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}
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else
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{
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info->shift1 = "shll.l\t%S0";
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info->shift2 = "shll.l\t#2,%S0";
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}
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goto end;
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case SHIFT_LSHIFTRT:
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info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0";
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info->shift1 = "shlr.l\t%S0";
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info->shift2 = "shlr.l\t#2,%S0";
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if (TARGET_H8300)
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{
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info->shift1 = "shlr\t%x0\n\trotxr\t%w0";
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}
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else
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{
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info->shift1 = "shlr.l\t%S0";
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info->shift2 = "shlr.l\t#2,%S0";
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}
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goto end;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0";
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{
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info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0";
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info->shift1 = "shar\t%x0\n\trotxr\t%w0";
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}
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else
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info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
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info->shift1 = "shar.l\t%S0";
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info->shift2 = "shar.l\t#2,%S0";
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{
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info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
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info->shift1 = "shar.l\t%S0";
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info->shift2 = "shar.l\t#2,%S0";
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}
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goto end;
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}
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}
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else if (TARGET_H8300 && 24 <= count && count <= 28)
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{
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info->remainder = count - 24;
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switch (shift_type)
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{
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case SHIFT_ASHIFT:
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info->special = "mov.b\t%w0,%z0\n\tsub.b\t%y0,%y0\n\tsub.w\t%f0,%f0";
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info->shift1 = "shll.b\t%z0";
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goto end;
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case SHIFT_LSHIFTRT:
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info->special = "mov.b\t%z0,%w0\n\tsub.b\t%x0,%x0\n\tsub.w\t%e0,%e0";
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info->shift1 = "shlr.b\t%w0";
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goto end;
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case SHIFT_ASHIFTRT:
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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";
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info->shift1 = "shar.b\t%w0";
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goto end;
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}
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}
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else if ((TARGET_H8300H && count == 24)
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|| (TARGET_H8300S && 24 <= count && count <= 25))
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{
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