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pa.c (reg_or_0_operand): Use CONST0_RTX instead of const0_rtx. 

* pa.c (reg_or_0_operand): Use CONST0_RTX instead of
	const0_rtx.
	(reg_or_0_or_nonsymb_mem_operand): New function.
	(emit_move_sequence): Copying CONST0_RTX into any
	register can be done directly.  Use CONST0_RTX instead
	of const0_rtx.
	(output_fp_move_double): Handle copying a CONST0_RTX
	into FP or integer registers.
	(print_operand): Handle "%r0" for DFmode and SFmode
	values too.

From-SVN: r3391
This commit is contained in:
Jeff Law 1993-01-30 14:09:51 -07:00
parent 7c57c7983d
commit f048ca473f
1 changed files with 46 additions and 6 deletions
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52
gcc/config/pa/pa.c
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@ -49,13 +49,13 @@ int hp_profile_labelno;
static rtx find_addr_reg ();
/* Return non-zero only if OP is a register of mode MODE,
or const0_rtx. */
or CONST0_RTX. */
int
reg_or_0_operand (op, mode)
rtx op;
enum machine_mode mode;
{
return (op == const0_rtx || register_operand (op, mode));
return (op == CONST0_RTX (mode) || register_operand (op, mode));
}
int
@ -121,6 +121,26 @@ reg_or_nonsymb_mem_operand (op, mode)
return 0;
}
/* Return 1 if the operand is either a register, zero, or a memory operand
that is not symbolic. */
int
reg_or_0_or_nonsymb_mem_operand (op, mode)
register rtx op;
enum machine_mode mode;
{
if (register_operand (op, mode))
return 1;
if (op == CONST0_RTX (mode))
return 1;
if (memory_operand (op, mode) && ! symbolic_memory_operand (op, mode))
return 1;
return 0;
}
int
move_operand (op, mode)
rtx op;
@ -525,6 +545,7 @@ emit_move_sequence (operands, mode, scratch_reg)
{
if (register_operand (operand1, mode)
|| (GET_CODE (operand1) == CONST_INT && INT_14_BITS (operand1))
|| (operand1 == CONST0_RTX (mode))
|| (GET_CODE (operand1) == HIGH
&& !symbolic_operand (XEXP (operand1, 0)))
/* Only `general_operands' can come here, so MEM is ok. */
@ -537,7 +558,7 @@ emit_move_sequence (operands, mode, scratch_reg)
}
else if (GET_CODE (operand0) == MEM)
{
if (register_operand (operand1, mode) || operand1 == const0_rtx)
if (register_operand (operand1, mode) || operand1 == CONST0_RTX (mode))
{
/* Run this case quickly. */
emit_insn (gen_rtx (SET, VOIDmode, operand0, operand1));
@ -947,8 +968,9 @@ output_fp_move_double (operands)
{
if (FP_REG_P (operands[0]))
{
if (FP_REG_P (operands[1]))
output_asm_insn ("fcpy,dbl %1,%0", operands);
if (FP_REG_P (operands[1])
|| operands[1] == CONST0_RTX (GET_MODE (operands[0])))
output_asm_insn ("fcpy,dbl %r1,%0", operands);
else if (GET_CODE (operands[1]) == REG)
{
rtx xoperands[3];
@ -977,6 +999,22 @@ output_fp_move_double (operands)
else
output_asm_insn ("fstds%F0 %1,%0", operands);
}
else if (operands[1] == CONST0_RTX (GET_MODE (operands[0])))
{
if (GET_CODE (operands[0]) == REG)
{
rtx xoperands[2];
xoperands[1] = gen_rtx (REG, SImode, REGNO (operands[0]) + 1);
xoperands[0] = operands[0];
output_asm_insn ("copy %%r0,%0\n\tcopy %%r0,%1", xoperands);
}
/* This is a pain. You have to be prepared to deal with an
arbritary address here including pre/post increment/decrement.
so avoid this in the MD. */
else
abort ();
}
else abort ();
return "";
}
@ -1905,7 +1943,9 @@ print_operand (file, x, code)
return;
case 'r':
/* A register or zero. */
if (x == const0_rtx)
if (x == const0_rtx
|| (x == CONST0_RTX (DFmode))
|| (x == CONST0_RTX (SFmode)))
{
fputs ("0", file);
return;