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calls.c (expand_call): Don't turn off ECF_LIBCALL_BLOCK for an invalid result register...

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* calls.c (expand_call): Don't turn off ECF_LIBCALL_BLOCK for
        an invalid result register; do end the sequence properly.
        (emit_library_call_value_1): Likewise.

From-SVN: r48287
This commit is contained in:
Richard Henderson 2001-12-23 05:02:18 -08:00 committed by Richard Henderson
parent ece2d1b824
commit e4abc3d580
2 changed files with 66 additions and 41 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2001-12-23 Richard Henderson <rth@redhat.com>
* calls.c (expand_call): Don't turn off ECF_LIBCALL_BLOCK for
an invalid result register; do end the sequence properly.
(emit_library_call_value_1): Likewise.
2001-12-22 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.h (rs6000_builtins): Add vsldoi variants.

101
gcc/calls.c
View File

@ -2937,9 +2937,6 @@ expand_call (exp, target, ignore)
valreg = hard_function_value (TREE_TYPE (exp), fndecl, (pass == 0));
}
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
flags &= ~ECF_LIBCALL_BLOCK;
/* Precompute all register parameters. It isn't safe to compute anything
once we have started filling any specific hard regs. */
precompute_register_parameters (num_actuals, args, &reg_parm_seen);
@ -3071,32 +3068,45 @@ expand_call (exp, target, ignore)
we have no way to move such values into a pseudo register. */
if (pass && (flags & ECF_LIBCALL_BLOCK))
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
rtx insns;
/* Mark the return value as a pointer if needed. */
if (TREE_CODE (TREE_TYPE (exp)) == POINTER_TYPE)
mark_reg_pointer (temp, TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp))));
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
{
insns = get_insns ();
end_sequence ();
emit_insns (insns);
}
else
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < num_actuals; i++)
note = gen_rtx_EXPR_LIST (VOIDmode, args[i].initial_value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, funexp, note);
/* Mark the return value as a pointer if needed. */
if (TREE_CODE (TREE_TYPE (exp)) == POINTER_TYPE)
mark_reg_pointer (temp,
TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp))));
insns = get_insns ();
end_sequence ();
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < num_actuals; i++)
note = gen_rtx_EXPR_LIST (VOIDmode,
args[i].initial_value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, funexp, note);
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))), note);
insns = get_insns ();
end_sequence ();
emit_libcall_block (insns, temp, valreg, note);
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))),
note);
valreg = temp;
emit_libcall_block (insns, temp, valreg, note);
valreg = temp;
}
}
else if (pass && (flags & ECF_MALLOC))
{
@ -4021,8 +4031,6 @@ emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
NO_DEFER_POP;
valreg = (mem_value == 0 && outmode != VOIDmode
? hard_libcall_value (outmode) : NULL_RTX);
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
flags &= ~ECF_LIBCALL_BLOCK;
/* Stack must be properly aligned now. */
if (stack_pointer_delta & (PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT - 1))
@ -4078,29 +4086,40 @@ emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
we have no way to move such values into a pseudo register. */
if (flags & ECF_LIBCALL_BLOCK)
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
rtx insns;
int i;
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < nargs; i++)
note = gen_rtx_EXPR_LIST (VOIDmode, argvec[i].value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, fun, note);
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
{
insns = get_insns ();
end_sequence ();
emit_insns (insns);
}
else
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
int i;
insns = get_insns ();
end_sequence ();
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < nargs; i++)
note = gen_rtx_EXPR_LIST (VOIDmode, argvec[i].value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, fun, note);
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))), note);
insns = get_insns ();
end_sequence ();
emit_libcall_block (insns, temp, valreg, note);
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))),
note);
valreg = temp;
emit_libcall_block (insns, temp, valreg, note);
valreg = temp;
}
}
pop_temp_slots ();