diff options
Diffstat (limited to 'gcc/config/h8300/h8300.c')
| -rw-r--r-- | gcc/config/h8300/h8300.c | 72 |
1 files changed, 38 insertions, 34 deletions
diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index 7cb293eb08b..c6e61db0624 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -2055,8 +2055,6 @@ get_shift_alg (cpu, shift_type, mode, count, assembler_p, const char **assembler2_p; int *cc_valid_p; { - /* The default is to loop. */ - enum shift_alg alg = SHIFT_LOOP; enum shift_mode shift_mode; /* We don't handle negative shifts or shifts greater than the word size, @@ -2544,7 +2542,8 @@ get_shift_alg (cpu, shift_type, mode, count, assembler_p, abort (); } - return alg; + /* No fancy method is available. Just loop. */ + return SHIFT_LOOP; } /* Emit the assembler code for doing shifts. */ @@ -2605,6 +2604,14 @@ emit_a_shift (insn, operands) /* Get the assembler code to do one shift. */ get_shift_alg (cpu_type, shift_type, mode, 1, &assembler, &assembler2, &cc_valid); + + fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); + output_asm_insn (assembler, operands); + output_asm_insn ("add #0xff,%X4", operands); + fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); + fprintf (asm_out_file, ".Lle%d:\n", loopend_lab); + + return ""; } else { @@ -2655,6 +2662,7 @@ emit_a_shift (insn, operands) ? ((1 << (GET_MODE_BITSIZE (mode) - n)) - 1) << n : (1 << (GET_MODE_BITSIZE (mode) - n)) - 1); char insn_buf[200]; + /* Not all possibilities of rotate are supported. They shouldn't be generated, but let's watch for 'em. */ if (assembler == 0) @@ -2705,44 +2713,40 @@ emit_a_shift (insn, operands) output_asm_insn (insn_buf, operands); return ""; } + case SHIFT_SPECIAL: output_asm_insn (assembler, operands); return ""; - } - /* A loop to shift by a "large" constant value. - If we have shift-by-2 insns, use them. */ - if (assembler2 != NULL) - { - fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n / 2, - names_big[REGNO (operands[4])]); - fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); - output_asm_insn (assembler2, operands); - output_asm_insn ("add #0xff,%X4", operands); - fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); - if (n % 2) - output_asm_insn (assembler, operands); - return ""; - } - else - { - fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n, - names_big[REGNO (operands[4])]); - fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); - output_asm_insn (assembler, operands); - output_asm_insn ("add #0xff,%X4", operands); - fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); + case SHIFT_LOOP: + /* A loop to shift by a "large" constant value. + If we have shift-by-2 insns, use them. */ + if (assembler2 != NULL) + { + fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n / 2, + names_big[REGNO (operands[4])]); + fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); + output_asm_insn (assembler2, operands); + output_asm_insn ("add #0xff,%X4", operands); + fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); + if (n % 2) + output_asm_insn (assembler, operands); + } + else + { + fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n, + names_big[REGNO (operands[4])]); + fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); + output_asm_insn (assembler, operands); + output_asm_insn ("add #0xff,%X4", operands); + fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); + } return ""; + + default: + abort (); } } - - fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); - output_asm_insn (assembler, operands); - output_asm_insn ("add #0xff,%X4", operands); - fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); - fprintf (asm_out_file, ".Lle%d:\n", loopend_lab); - - return ""; } /* Fix the operands of a gen_xxx so that it could become a bit |