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(output_to_reg, output_fix_trunc): Use scratch memory

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From-SVN: r14568
This commit is contained in:
Stan Cox 1997-07-31 20:37:46 +00:00
parent 4bc679adb2
commit c27d9c3bce
1 changed files with 51 additions and 24 deletions
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75
gcc/config/i386/i386.c
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@ -827,19 +827,24 @@ output_op_from_reg (src, template)
otherwise a `fst' float store is done. */
void
output_to_reg (dest, dies)
output_to_reg (dest, dies, scratch_mem)
rtx dest;
int dies;
rtx scratch_mem;
{
rtx xops[4];
int size = GET_MODE_SIZE (GET_MODE (dest));
xops[0] = AT_SP (Pmode);
if (! scratch_mem)
xops[0] = AT_SP (Pmode);
else
xops[0] = scratch_mem;
xops[1] = stack_pointer_rtx;
xops[2] = GEN_INT (size);
xops[3] = dest;
output_asm_insn (AS2 (sub%L1,%2,%1), xops);
if (! scratch_mem)
output_asm_insn (AS2 (sub%L1,%2,%1), xops);
if (GET_MODE_CLASS (GET_MODE (dest)) == MODE_INT)
{
@ -866,16 +871,33 @@ output_to_reg (dest, dies)
else
abort ();
output_asm_insn (AS1 (pop%L0,%0), &dest);
if (! scratch_mem)
output_asm_insn (AS1 (pop%L0,%0), &dest);
else
output_asm_insn (AS2 (mov%L0,%0,%3), xops);
if (size > UNITS_PER_WORD)
{
dest = gen_rtx (REG, SImode, REGNO (dest) + 1);
output_asm_insn (AS1 (pop%L0,%0), &dest);
if (! scratch_mem)
output_asm_insn (AS1 (pop%L0,%0), &dest);
else
{
xops[0] = adj_offsettable_operand (xops[0], 4);
xops[3] = dest;
output_asm_insn (AS2 (mov%L0,%0,%3), xops);
}
if (size > 2 * UNITS_PER_WORD)
{
dest = gen_rtx (REG, SImode, REGNO (dest) + 1);
output_asm_insn (AS1 (pop%L0,%0), &dest);
if (! scratch_mem)
output_asm_insn (AS1 (pop%L0,%0), &dest);
else
{
xops[0] = adj_offsettable_operand (xops[0], 4);
output_asm_insn (AS2 (mov%L0,%0,%3), xops);
}
}
}
}
@ -2846,11 +2868,18 @@ output_pic_addr_const (file, x, code)
/* Append the correct conditional move suffix which corresponds to CODE */
static void
put_condition_code (code, mode, file)
put_condition_code (code, reverse_cc, mode, file)
enum rtx_code code;
int reverse_cc;
enum mode_class mode;
FILE * file;
{
int ieee;
ieee = (TARGET_IEEE_FP && (cc_prev_status.flags & CC_IN_80387)
&& ! (cc_prev_status.flags & CC_FCOMI));
if (reverse_cc && ! ieee)
code = reverse_condition (code);
if (mode == MODE_INT)
switch (code)
{
@ -2888,25 +2917,25 @@ put_condition_code (code, mode, file)
switch (code)
{
case NE:
fputs ("ne", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "ne", file); return;
case EQ:
fputs ("e", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "e", file); return;
case GE:
fputs ("nb", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "nb", file); return;
case GT:
fputs ("nbe", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "nbe", file); return;
case LE:
fputs ("be", file); return;
fputs (ieee ? (reverse_cc ? "nb" : "b") : "be", file); return;
case LT:
fputs ("b", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "b", file); return;
case GEU:
fputs ("nb", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "nb", file); return;
case GTU:
fputs ("nbe", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "nbe", file); return;
case LEU:
fputs ("be", file); return;
fputs (ieee ? (reverse_cc ? "nb" : "b") : "be", file); return;
case LTU:
fputs ("b", file); return;
fputs (ieee ? (reverse_cc ? "ne" : "e") : "b", file); return;
default: output_operand_lossage ("Invalid %%C operand");
}
}
@ -3058,22 +3087,20 @@ print_operand (file, x, code)
/* This is used by the conditional move instructions. */
case 'C':
put_condition_code (GET_CODE (x), MODE_INT, file);
put_condition_code (GET_CODE (x), 0, MODE_INT, file);
return;
/* like above, but reverse condition */
case 'c':
put_condition_code (reverse_condition (GET_CODE (x)), MODE_INT, file);
return;
put_condition_code (GET_CODE (x), 1, MODE_INT, file); return;
case 'F':
put_condition_code (GET_CODE (x), MODE_FLOAT, file);
put_condition_code (GET_CODE (x), 0, MODE_FLOAT, file);
return;
/* like above, but reverse condition */
case 'f':
put_condition_code (reverse_condition (GET_CODE (x)),
MODE_FLOAT, file);
put_condition_code (GET_CODE (x), 1, MODE_FLOAT, file);
return;
default:
@ -3684,7 +3711,7 @@ output_fix_trunc (insn, operands)
output_asm_insn (AS1 (fldc%W3,%3), operands);
if (NON_STACK_REG_P (operands[0]))
output_to_reg (operands[0], stack_top_dies);
output_to_reg (operands[0], stack_top_dies, operands[3]);
else if (GET_CODE (operands[0]) == MEM)
{
if (stack_top_dies)