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Don't make bogus libcall blocks

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From-SVN: r36435
This commit is contained in:
Bernd Schmidt 2000-09-15 16:21:53 +00:00 committed by Bernd Schmidt
parent 642dfa8b65
commit 188c5e6ca8
2 changed files with 2 additions and 44 deletions
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2
gcc/ChangeLog
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@ -4,6 +4,8 @@
copy to a temporary first.
* expr.c (convert_move): When generating a libcall, make a libcall
block.
* calls.c (emit_library_call_value_1): Don't create a libcall
sequence here; our caller will in most cases do it.
2000-09-15 Richard Henderson <rth@cygnus.com>

44
gcc/calls.c
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@ -3580,11 +3580,6 @@ emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
count = 0;
/* Now we are about to start emitting insns that can be deleted
if a libcall is deleted. */
if (flags & (ECF_CONST | ECF_PURE))
start_sequence ();
push_temp_slots ();
/* If there's a structure value address to be passed,
@ -4022,45 +4017,6 @@ emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
/* Now restore inhibit_defer_pop to its actual original value. */
OK_DEFER_POP;
/* If call is cse'able, make appropriate pair of reg-notes around it.
Test valreg so we don't crash; may safely ignore `const'
if return type is void. Disable for PARALLEL return values, because
we have no way to move such values into a pseudo register. */
if ((flags & (ECF_CONST | ECF_PURE))
&& valreg != 0 && GET_CODE (valreg) != PARALLEL)
{
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);
insns = get_insns ();
end_sequence ();
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))), note);
emit_libcall_block (insns, temp, valreg, note);
valreg = temp;
}
else if (flags & (ECF_CONST | ECF_PURE))
{
/* Otherwise, just write out the sequence without a note. */
rtx insns = get_insns ();
end_sequence ();
emit_insns (insns);
}
pop_temp_slots ();
/* Copy the value to the right place. */