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(output_move_{si,hi,qi}mode): New functions.
From-SVN: r13787
This commit is contained in:
Richard Kenner
parent
bae348586b
commit
f4e801988d
@ -1406,6 +1406,146 @@ output_move_simode_const (operands)
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return "move%.l %1,%0";
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}
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char *
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output_move_simode (operands)
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rtx *operands;
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{
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if (GET_CODE (operands[1]) == CONST_INT)
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return output_move_simode_const (operands);
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else if ((GET_CODE (operands[1]) == SYMBOL_REF
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|| GET_CODE (operands[1]) == CONST)
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&& push_operand (operands[0], SImode))
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return "pea %a1";
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else if ((GET_CODE (operands[1]) == SYMBOL_REF
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|| GET_CODE (operands[1]) == CONST)
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&& ADDRESS_REG_P (operands[0]))
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return "lea %a1,%0";
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return "move%.l %1,%0";
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}
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char *
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output_move_himode (operands)
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rtx *operands;
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{
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if (GET_CODE (operands[1]) == CONST_INT)
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{
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if (operands[1] == const0_rtx
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&& (DATA_REG_P (operands[0])
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|| GET_CODE (operands[0]) == MEM)
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/* clr insns on 68000 read before writing.
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This isn't so on the 68010, but we have no TARGET_68010. */
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&& ((TARGET_68020 || TARGET_5200)
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|| !(GET_CODE (operands[0]) == MEM
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&& MEM_VOLATILE_P (operands[0]))))
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return "clr%.w %0";
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else if (DATA_REG_P (operands[0])
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&& INTVAL (operands[1]) < 128
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&& INTVAL (operands[1]) >= -128)
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{
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#if defined(MOTOROLA) && !defined(CRDS)
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return "moveq%.l %1,%0";
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#else
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return "moveq %1,%0";
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#endif
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}
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else if (INTVAL (operands[1]) < 0x8000
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&& INTVAL (operands[1]) >= -0x8000)
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return "move%.w %1,%0";
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}
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else if (CONSTANT_P (operands[1]))
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return "move%.l %1,%0";
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#ifndef SGS_NO_LI
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/* Recognize the insn before a tablejump, one that refers
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to a table of offsets. Such an insn will need to refer
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to a label on the insn. So output one. Use the label-number
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of the table of offsets to generate this label. This code,
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and similar code below, assumes that there will be at most one
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reference to each table. */
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if (GET_CODE (operands[1]) == MEM
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&& GET_CODE (XEXP (operands[1], 0)) == PLUS
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&& GET_CODE (XEXP (XEXP (operands[1], 0), 1)) == LABEL_REF
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&& GET_CODE (XEXP (XEXP (operands[1], 0), 0)) != PLUS)
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{
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rtx labelref = XEXP (XEXP (operands[1], 0), 1);
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#if defined (MOTOROLA) && !defined (SGS_SWITCH_TABLES)
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#ifdef SGS
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asm_fprintf (asm_out_file, "\tset %LLI%d,.+2\n",
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CODE_LABEL_NUMBER (XEXP (labelref, 0)));
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#else /* not SGS */
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asm_fprintf (asm_out_file, "\t.set %LLI%d,.+2\n",
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CODE_LABEL_NUMBER (XEXP (labelref, 0)));
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#endif /* not SGS */
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#else /* SGS_SWITCH_TABLES or not MOTOROLA */
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ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LI",
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CODE_LABEL_NUMBER (XEXP (labelref, 0)));
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#ifdef SGS_SWITCH_TABLES
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/* Set flag saying we need to define the symbol
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LD%n (with value L%n-LI%n) at the end of the switch table. */
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switch_table_difference_label_flag = 1;
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#endif /* SGS_SWITCH_TABLES */
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#endif /* SGS_SWITCH_TABLES or not MOTOROLA */
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}
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#endif /* SGS_NO_LI */
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return "move%.w %1,%0";
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}
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char *
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output_move_qimode (operands)
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rtx *operands;
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{
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rtx xoperands[4];
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/* This is probably useless, since it loses for pushing a struct
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of several bytes a byte at a time. */
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if (GET_CODE (operands[0]) == MEM
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&& GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
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&& XEXP (XEXP (operands[0], 0), 0) == stack_pointer_rtx
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&& ! ADDRESS_REG_P (operands[1]))
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{
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xoperands[1] = operands[1];
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xoperands[2]
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= gen_rtx (MEM, QImode,
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gen_rtx (PLUS, VOIDmode, stack_pointer_rtx, const1_rtx));
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/* Just pushing a byte puts it in the high byte of the halfword. */
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/* We must put it in the low-order, high-numbered byte. */
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output_asm_insn ("move%.b %1,%-\n\tmove%.b %@,%2", xoperands);
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return "";
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}
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/* clr and st insns on 68000 read before writing.
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This isn't so on the 68010, but we have no TARGET_68010. */
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if (!ADDRESS_REG_P (operands[0])
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&& ((TARGET_68020 || TARGET_5200)
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|| !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
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{
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if (operands[1] == const0_rtx)
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return "clr%.b %0";
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if ((!TARGET_5200 || DATA_REG_P (operands[0]))
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&& GET_CODE (operands[1]) == CONST_INT
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&& (INTVAL (operands[1]) & 255) == 255)
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{
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CC_STATUS_INIT;
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return "st %0";
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}
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}
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if (GET_CODE (operands[1]) == CONST_INT
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&& DATA_REG_P (operands[0])
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&& INTVAL (operands[1]) < 128
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&& INTVAL (operands[1]) >= -128)
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{
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#if defined(MOTOROLA) && !defined(CRDS)
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return "moveq%.l %1,%0";
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#else
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return "moveq %1,%0";
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#endif
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}
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if (GET_CODE (operands[1]) != CONST_INT && CONSTANT_P (operands[1]))
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return "move%.l %1,%0";
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if (ADDRESS_REG_P (operands[0]) || ADDRESS_REG_P (operands[1]))
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return "move%.w %1,%0";
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return "move%.b %1,%0";
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}
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/* Return the best assembler insn template
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for moving operands[1] into operands[0] as a fullword. */
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