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(emit_move_insn): Delete unused vars.

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(emit_move_insn_1): Don't set SUBMODE unless used.
(expand_builtin, case BUILT_IN_SAVEREGS): Clean up uses of VALREG
and SAVED_VALREG.

From-SVN: r6642
This commit is contained in:
Richard Kenner 1994-02-27 10:47:10 -05:00
parent 2af5e9e20d
commit d0c766547a
1 changed files with 14 additions and 19 deletions
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33
gcc/expr.c
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@ -1712,9 +1712,6 @@ emit_move_insn (x, y)
rtx x, y;
{
enum machine_mode mode = GET_MODE (x);
enum machine_mode submode;
enum mode_class class = GET_MODE_CLASS (mode);
int i;
x = protect_from_queue (x, 1);
y = protect_from_queue (y, 0);
@ -1759,19 +1756,17 @@ emit_move_insn_1 (x, y)
enum mode_class class = GET_MODE_CLASS (mode);
int i;
if (class == MODE_COMPLEX_FLOAT || class == MODE_COMPLEX_INT)
submode = mode_for_size (GET_MODE_UNIT_SIZE (mode) * BITS_PER_UNIT,
(class == MODE_COMPLEX_INT
? MODE_INT : MODE_FLOAT),
0);
if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
return
emit_insn (GEN_FCN (mov_optab->handlers[(int) mode].insn_code) (x, y));
/* Expand complex moves by moving real part and imag part, if possible. */
else if ((class == MODE_COMPLEX_FLOAT || class == MODE_COMPLEX_INT)
&& submode != BLKmode
&& BLKmode != (submode = mode_for_size ((GET_MODE_UNIT_SIZE (mode)
* BITS_PER_UNIT),
(class == MODE_COMPLEX_INT
? MODE_INT : MODE_FLOAT),
0))
&& (mov_optab->handlers[(int) submode].insn_code
!= CODE_FOR_nothing))
{
@ -6849,7 +6844,6 @@ expand_builtin (exp, target, subtarget, mode, ignore)
call to the first insn of this function. */
rtx temp;
rtx seq;
rtx valreg, saved_valreg;
/* Now really call the function. `expand_call' does not call
expand_builtin, so there is no danger of infinite recursion here. */
@ -6862,18 +6856,19 @@ expand_builtin (exp, target, subtarget, mode, ignore)
/* The register where the function returns its value
is likely to have something else in it, such as an argument.
So preserve that register around the call. */
if (value_mode != VOIDmode)
{
valreg = hard_libcall_value (value_mode);
saved_valreg = gen_reg_rtx (value_mode);
rtx valreg = hard_libcall_value (value_mode);
rtx saved_valreg = gen_reg_rtx (value_mode);
emit_move_insn (saved_valreg, valreg);
temp = expand_call (exp, target, ignore);
emit_move_insn (valreg, saved_valreg);
}
/* Generate the call, putting the value in a pseudo. */
temp = expand_call (exp, target, ignore);
if (value_mode != VOIDmode)
emit_move_insn (valreg, saved_valreg);
else
/* Generate the call, putting the value in a pseudo. */
temp = expand_call (exp, target, ignore);
#endif
seq = get_insns ();