h8300.c (get_shift_alg): Clean up.
* config/h8300/h8300.c (get_shift_alg): Clean up. Return the algorithm through the shift_info structure. (emit_a_shift): Update the use of get_shift_alg. From-SVN: r46553
This commit is contained in:
Kazu Hirata
Kazu Hirata
parent
c0b1738da2
commit
cb33eb17f7
2 changed files with 108 additions and 142 deletions
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@ -1,3 +1,9 @@
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2001-10-26 Kazu Hirata <kazu@hxi.com>
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* config/h8300/h8300.c (get_shift_alg): Clean up. Return the
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algorithm through the shift_info structure.
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(emit_a_shift): Update the use of get_shift_alg.
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2001-10-27 Daniel Berlin <dan@cgsoftware.com>
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* sched-rgn.c: Remove bitset typedef.
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@ -2178,9 +2178,9 @@ struct shift_info {
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int cc_valid_p;
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};
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static enum shift_alg get_shift_alg PARAMS ((enum shift_type,
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enum shift_mode, int,
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struct shift_info *));
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static void get_shift_alg PARAMS ((enum shift_type,
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enum shift_mode, int,
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struct shift_info *));
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/* Given SHIFT_TYPE, SHIFT_MODE, and shift count COUNT, determine the
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best algorithm for doing the shift. The assembler code is stored
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@ -2195,20 +2195,20 @@ static enum shift_alg get_shift_alg PARAMS ((enum shift_type,
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WARNING: The constraints on insns shiftbyn_QI/HI/SI assume shifts of
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1,2,3,4 will be inlined (1,2 for SI). */
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static enum shift_alg
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static void
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get_shift_alg (shift_type, shift_mode, count, info)
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enum shift_type shift_type;
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enum shift_mode shift_mode;
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int count;
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struct shift_info *info;
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{
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/* In case we end up with SHIFT_SPECIAL, initialize REMAINDER to 0. */
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info->remainder = 0;
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/* Assume either SHIFT_LOOP or SHIFT_INLINE.
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It is up to the caller to know that looping clobbers cc. */
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info->shift1 = shift_one[cpu_type][shift_type][shift_mode].assembler;
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if (TARGET_H8300S)
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info->shift2 = shift_two[shift_type][shift_mode].assembler;
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else
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info->shift2 = NULL;
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info->shift2 = shift_two[shift_type][shift_mode].assembler;
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info->cc_valid_p = shift_one[cpu_type][shift_type][shift_mode].cc_valid;
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/* Now look for cases we want to optimize. */
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@ -2217,75 +2217,67 @@ get_shift_alg (shift_type, shift_mode, count, info)
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{
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case QIshift:
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if (count <= 4)
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return SHIFT_INLINE;
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goto return_shift_inline;
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else
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{
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/* Shift by 5/6 are only 3 insns on the H8/S, so it's just as
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fast as SHIFT_ROT_AND, plus CC is valid. */
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if (TARGET_H8300S && count <= 6)
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return SHIFT_INLINE;
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goto return_shift_inline;
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/* For ASHIFTRT by 7 bits, the sign bit is simply replicated
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through the entire value. */
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if (shift_type == SHIFT_ASHIFTRT && count == 7)
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{
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info->special = "shll\t%X0\n\tsubx\t%X0,%X0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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/* Other ASHIFTRTs are too much of a pain. */
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if (shift_type == SHIFT_ASHIFTRT)
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return SHIFT_LOOP;
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goto return_shift_loop;
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/* Other shifts by 5, 6, or 7 bits use SHIFT_ROT_AND. */
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info->shift1 = rotate_one[cpu_type][shift_type][shift_mode];
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if (TARGET_H8300S)
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info->shift2 = rotate_two[shift_type][shift_mode];
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info->cc_valid_p = 0;
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return SHIFT_ROT_AND;
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info->shift2 = rotate_two[shift_type][shift_mode];
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goto return_shift_rot_and;
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}
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case HIshift:
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if (count <= 4)
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return SHIFT_INLINE;
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goto return_shift_inline;
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else if (TARGET_H8300S && count <= 7)
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return SHIFT_INLINE;
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goto return_shift_inline;
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else if (count == 7)
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{
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if (shift_type == SHIFT_ASHIFT && TARGET_H8300)
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{
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info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.b\t%t0\n\trotr.b\t%s0\n\tand.b\t#0x80,%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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if (shift_type == SHIFT_ASHIFT && TARGET_H8300H)
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{
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info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.w\t%T0\n\tand.b\t#0x80,%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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if (shift_type == SHIFT_LSHIFTRT && TARGET_H8300)
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{
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info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\trotl.b\t%t0\n\tand.b\t#0x01,%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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if (shift_type == SHIFT_LSHIFTRT && TARGET_H8300H)
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{
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info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.w\t%T0\n\tand.b\t#0x01,%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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if (shift_type == SHIFT_ASHIFTRT)
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{
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info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\tsubx\t%t0,%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 8)
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@ -2294,19 +2286,16 @@ 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.b\t%s0,%t0\n\tsub.b\t%s0,%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.b\t%t0,%s0\n\tshll\t%t0\n\tsubx\t%t0,%t0";
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else
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 9)
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@ -2315,19 +2304,16 @@ 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.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0\n\tshar.b\t%s0";
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else
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 10)
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@ -2339,15 +2325,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t#2,%t0";
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else
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t%t0\n\tshal.b\t%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t#2,%s0";
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else
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t%s0\n\tshlr.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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@ -2355,8 +2339,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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else if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t#2,%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 11)
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@ -2368,15 +2351,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t#2,%t0\n\tshal.b\t%t0";
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else
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t%t0\n\tshal.b\t%t0\n\tshal.b\t%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t#2,%s0\n\tshlr.b\t%s0";
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else
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t%s0\n\tshlr.b\t%s0\n\tshlr.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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@ -2384,8 +2365,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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else if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t#2,%s0\n\tshar.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 12)
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@ -2397,15 +2377,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t#2,%t0\n\tshal.b\t#2,%t0";
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else
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info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tshal.b\t%t0\n\tshal.b\t%t0\n\tshal.b\t%t0\n\tshal.b\t%t0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t#2,%s0\n\tshlr.b\t#2,%s0";
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else
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info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0\n\tshlr.b\t%s0\n\tshlr.b\t%s0\n\tshlr.b\t%s0\n\tshlr.b\t%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
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if (TARGET_H8300)
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info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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@ -2413,8 +2391,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0\n\tshar.b\t%s0";
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else if (TARGET_H8300S)
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info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0\n\tshar.b\t#2,%s0\n\tshar.b\t#2,%s0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if ((!TARGET_H8300 && (count == 13 || count == 14))
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@ -2423,43 +2400,35 @@ get_shift_alg (shift_type, shift_mode, count, info)
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if (count == 15 && shift_type == SHIFT_ASHIFTRT)
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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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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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else if (shift_type != SHIFT_ASHIFTRT)
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{
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info->shift1 = rotate_one[cpu_type][shift_type][shift_mode];
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if (TARGET_H8300S)
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info->shift2 = rotate_two[shift_type][shift_mode];
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else
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info->shift2 = NULL;
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info->cc_valid_p = 0;
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return SHIFT_ROT_AND;
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info->shift2 = rotate_two[shift_type][shift_mode];
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goto return_shift_rot_and;
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}
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}
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break;
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case SIshift:
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if (count <= (TARGET_H8300 ? 2 : 4))
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return SHIFT_INLINE;
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goto return_shift_inline;
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else if (TARGET_H8300S && count <= 10)
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return SHIFT_INLINE;
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goto return_shift_inline;
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else if (count == 8 && 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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info->special = "mov.b\t%y0,%z0\n\tmov.b\t%x0,%y0\n\tmov.b\t%w0,%x0\n\tsub.b\t%w0,%w0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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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->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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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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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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}
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}
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else if (count == 8 && !TARGET_H8300)
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@ -2468,16 +2437,13 @@ 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%e0,%f4\n\tmov.b\t%s4,%t4\n\tmov.b\t%t0,%s4\n\tmov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f4,%e0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_LSHIFTRT:
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info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\textu.w\t%f4\n\tmov.w\t%f4,%e0";
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info->cc_valid_p = 0;
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return SHIFT_SPECIAL;
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goto return_shift_special;
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case SHIFT_ASHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\texts.w\t%f4\n\tmov.w\t%f4,%e0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 16)
|
||||
|
|
@ -2486,19 +2452,16 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
{
|
||||
case SHIFT_ASHIFT:
|
||||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_LSHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_ASHIFTRT:
|
||||
if (TARGET_H8300)
|
||||
info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0";
|
||||
else
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 17 && !TARGET_H8300)
|
||||
|
|
@ -2507,16 +2470,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
{
|
||||
case SHIFT_ASHIFT:
|
||||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_LSHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_ASHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 18 && !TARGET_H8300)
|
||||
|
|
@ -2528,22 +2488,19 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t#2,%S0";
|
||||
else
|
||||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t%S0\n\tshll.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_LSHIFTRT:
|
||||
if (TARGET_H8300S)
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t#2,%S0";
|
||||
else
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t%S0\n\tshlr.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_ASHIFTRT:
|
||||
if (TARGET_H8300S)
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t#2,%S0";
|
||||
else
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t%S0\n\tshar.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 19 && !TARGET_H8300)
|
||||
|
|
@ -2555,22 +2512,19 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t#2,%S0\n\tshll.l\t%S0";
|
||||
else
|
||||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t%S0\n\tshll.l\t%S0\n\tshll.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_LSHIFTRT:
|
||||
if (TARGET_H8300S)
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t#2,%S0\n\tshlr.l\t%S0";
|
||||
else
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t%S0\n\tshlr.l\t%S0\n\tshlr.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_ASHIFTRT:
|
||||
if (TARGET_H8300S)
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t#2,%S0\n\tshar.l\t%S0";
|
||||
else
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t%S0\n\tshar.l\t%S0\n\tshar.l\t%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 20 && TARGET_H8300S)
|
||||
|
|
@ -2579,16 +2533,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
{
|
||||
case SHIFT_ASHIFT:
|
||||
info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0\n\tshll.l\t#2,%S0\n\tshll.l\t#2,%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_LSHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0\n\tshlr.l\t#2,%S0\n\tshlr.l\t#2,%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
case SHIFT_ASHIFTRT:
|
||||
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0\n\tshar.l\t#2,%S0\n\tshar.l\t#2,%S0";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count == 24 && !TARGET_H8300)
|
||||
|
|
@ -2597,33 +2548,26 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
{
|
||||
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->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
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->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
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->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
}
|
||||
else if (count >= 28 && count <= 30 && !TARGET_H8300)
|
||||
{
|
||||
if (shift_type == SHIFT_ASHIFTRT)
|
||||
{
|
||||
return SHIFT_LOOP;
|
||||
goto return_shift_loop;
|
||||
}
|
||||
else
|
||||
{
|
||||
info->shift1 = rotate_one[cpu_type][shift_type][shift_mode];
|
||||
if (TARGET_H8300S)
|
||||
info->shift2 = rotate_two[shift_type][shift_mode];
|
||||
else
|
||||
info->shift2 = NULL;
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_ROT_AND;
|
||||
info->shift2 = rotate_two[shift_type][shift_mode];
|
||||
goto return_shift_rot_and;
|
||||
}
|
||||
}
|
||||
else if (count == 31)
|
||||
|
|
@ -2634,8 +2578,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
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";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
else
|
||||
{
|
||||
|
|
@ -2645,18 +2588,13 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
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";
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_SPECIAL;
|
||||
goto return_shift_special;
|
||||
}
|
||||
else
|
||||
{
|
||||
info->shift1 = rotate_one[cpu_type][shift_type][shift_mode];
|
||||
if (TARGET_H8300S)
|
||||
info->shift2 = rotate_two[shift_type][shift_mode];
|
||||
else
|
||||
info->shift2 = NULL;
|
||||
info->cc_valid_p = 0;
|
||||
return SHIFT_ROT_AND;
|
||||
info->shift2 = rotate_two[shift_type][shift_mode];
|
||||
goto return_shift_rot_and;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -2666,8 +2604,29 @@ get_shift_alg (shift_type, shift_mode, count, info)
|
|||
abort ();
|
||||
}
|
||||
|
||||
return_shift_loop:
|
||||
/* No fancy method is available. Just loop. */
|
||||
return SHIFT_LOOP;
|
||||
info->alg = SHIFT_LOOP;
|
||||
goto end;
|
||||
|
||||
return_shift_inline:
|
||||
info->remainder = count;
|
||||
info->alg = SHIFT_INLINE;
|
||||
goto end;
|
||||
|
||||
return_shift_special:
|
||||
info->cc_valid_p = 0;
|
||||
info->alg = SHIFT_SPECIAL;
|
||||
goto end;
|
||||
|
||||
return_shift_rot_and:
|
||||
info->cc_valid_p = 0;
|
||||
info->alg = SHIFT_ROT_AND;
|
||||
goto end;
|
||||
|
||||
end:
|
||||
if (!TARGET_H8300S)
|
||||
info->shift2 = NULL;
|
||||
}
|
||||
|
||||
/* Emit the assembler code for doing shifts. */
|
||||
|
|
@ -2737,7 +2696,6 @@ emit_a_shift (insn, operands)
|
|||
else
|
||||
{
|
||||
int n = INTVAL (operands[2]);
|
||||
enum shift_alg alg;
|
||||
|
||||
/* If the count is negative, make it 0. */
|
||||
if (n < 0)
|
||||
|
|
@ -2748,11 +2706,17 @@ emit_a_shift (insn, operands)
|
|||
else if ((unsigned int) n > GET_MODE_BITSIZE (mode))
|
||||
n = GET_MODE_BITSIZE (mode);
|
||||
|
||||
alg = get_shift_alg (shift_type, shift_mode, n, &info);
|
||||
get_shift_alg (shift_type, shift_mode, n, &info);
|
||||
|
||||
switch (alg)
|
||||
switch (info.alg)
|
||||
{
|
||||
case SHIFT_SPECIAL:
|
||||
output_asm_insn (info.special, operands);
|
||||
/* Fall through. */
|
||||
|
||||
case SHIFT_INLINE:
|
||||
n = info.remainder;
|
||||
|
||||
/* Emit two bit shifts first. */
|
||||
while (n > 1 && info.shift2 != NULL)
|
||||
{
|
||||
|
|
@ -2834,10 +2798,6 @@ emit_a_shift (insn, operands)
|
|||
return "";
|
||||
}
|
||||
|
||||
case SHIFT_SPECIAL:
|
||||
output_asm_insn (info.special, operands);
|
||||
return "";
|
||||
|
||||
case SHIFT_LOOP:
|
||||
/* A loop to shift by a "large" constant value.
|
||||
If we have shift-by-2 insns, use them. */
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue