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re PR middle-end/52353 (-ftrapv -fnon-call-exceptions does not work)

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2012-03-05  Richard Guenther  <rguenther@suse.de>

	PR middle-end/52353
	* optabs.h (trapv_unoptab_p): New function.
	(trapv_binoptab_p): Likewise.
	* optabs.c (expand_binop): Use emit_libcall_block_1 with
	a proper equiv_may_trap argument.
	(expand_unop): Likewise.
	(emit_libcall_block_1): Take extra argument whether the
	instruction may trap.  Renamed from ...
	(emit_libcall_block): ... this.  New wrapper.

From-SVN: r184932
This commit is contained in:
Richard Guenther 2012-03-05 13:08:55 +00:00 • committed by Richard Biener
parent 8dad8b2590
commit b55f62ccae
3 changed files with 48 additions and 6 deletions
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12
gcc/ChangeLog
View file

@ -1,3 +1,15 @@
2012-03-05 Richard Guenther <rguenther@suse.de>
PR middle-end/52353
* optabs.h (trapv_unoptab_p): New function.
(trapv_binoptab_p): Likewise.
* optabs.c (expand_binop): Use emit_libcall_block_1 with
a proper equiv_may_trap argument.
(expand_unop): Likewise.
(emit_libcall_block_1): Take extra argument whether the
instruction may trap. Renamed from ...
(emit_libcall_block): ... this. New wrapper.
2012-03-05 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/51721

23
gcc/optabs.c
View file

@ -60,6 +60,7 @@ optab code_to_optab[NUM_RTX_CODE + 1];
static void prepare_float_lib_cmp (rtx, rtx, enum rtx_code, rtx *,
enum machine_mode *);
static rtx expand_unop_direct (enum machine_mode, optab, rtx, rtx, int);
static void emit_libcall_block_1 (rtx, rtx, rtx, rtx, bool);
/* Debug facility for use in GDB. */
void debug_optab_libfuncs (void);
@ -2115,8 +2116,9 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1,
end_sequence ();
target = gen_reg_rtx (mode);
emit_libcall_block (insns, target, value,
gen_rtx_fmt_ee (binoptab->code, mode, op0, op1));
emit_libcall_block_1 (insns, target, value,
gen_rtx_fmt_ee (binoptab->code, mode, op0, op1),
trapv_binoptab_p (binoptab));
return target;
}
@ -3197,7 +3199,8 @@ expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target,
eq_value = simplify_gen_unary (TRUNCATE, outmode, eq_value, mode);
else if (GET_MODE_SIZE (outmode) > GET_MODE_SIZE (mode))
eq_value = simplify_gen_unary (ZERO_EXTEND, outmode, eq_value, mode);
emit_libcall_block (insns, target, value, eq_value);
emit_libcall_block_1 (insns, target, value, eq_value,
trapv_unoptab_p (unoptab));
return target;
}
@ -3775,8 +3778,9 @@ no_conflict_move_test (rtx dest, const_rtx set, void *p0)
an insn to move RESULT to TARGET. This last insn will have a REQ_EQUAL
note with an operand of EQUIV. */
void
emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
static void
emit_libcall_block_1 (rtx insns, rtx target, rtx result, rtx equiv,
bool equiv_may_trap)
{
rtx final_dest = target;
rtx next, last, insn;
@ -3789,7 +3793,8 @@ emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
/* If we're using non-call exceptions, a libcall corresponding to an
operation that may trap may also trap. */
/* ??? See the comment in front of make_reg_eh_region_note. */
if (cfun->can_throw_non_call_exceptions && may_trap_p (equiv))
if (cfun->can_throw_non_call_exceptions
&& (equiv_may_trap || may_trap_p (equiv)))
{
for (insn = insns; insn; insn = NEXT_INSN (insn))
if (CALL_P (insn))
@ -3870,6 +3875,12 @@ emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
if (final_dest != target)
emit_move_insn (final_dest, target);
}
void
emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
{
emit_libcall_block_1 (insns, target, result, equiv, false);
}
/* Nonzero if we can perform a comparison of mode MODE straightforwardly.
PURPOSE describes how this comparison will be used. CODE is the rtx

19
gcc/optabs.h
View file

@ -1103,6 +1103,25 @@ set_direct_optab_handler (direct_optab op, enum machine_mode mode,
op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
}
/* Return true if UNOPTAB is for a trapping-on-overflow operation. */
static inline bool
trapv_unoptab_p (optab unoptab)
{
return (unoptab == negv_optab
|| unoptab == absv_optab);
}
/* Return true if BINOPTAB is for a trapping-on-overflow operation. */
static inline bool
trapv_binoptab_p (optab binoptab)
{
return (binoptab == addv_optab
|| binoptab == subv_optab
|| binoptab == smulv_optab);
}
extern rtx optab_libfunc (optab optab, enum machine_mode mode);
extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
enum machine_mode mode2);