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re PR c/8439 (empty struct causes crash) 

PR c/8439
	* recog.c (validate_replace_rtx_1) [PLUS]: Simplify only
	if there is something new to be simplified.

From-SVN: r59398
This commit is contained in:
Eric Botcazou 2002-11-23 09:01:21 +01:00 committed by Eric Botcazou
parent 89119fd6f8
commit d9afc0b797
2 changed files with 8 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2002-11-22 Eric Botcazou <ebotcazou@libertysurf.fr>
PR c/8439
* recog.c (validate_replace_rtx_1) [PLUS]: Simplify only
if there is something new to be simplified.
2002-11-22 Toon Moene <toon@moene.indiv.nluug.nl>
* c-decl.c (c_init_decl_processing): Move generation of

4
gcc/recog.c
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@ -507,10 +507,10 @@ validate_replace_rtx_1 (loc, from, to, object)
{
case PLUS:
/* If we have a PLUS whose second operand is now a CONST_INT, use
plus_constant to try to simplify it.
simplify_gen_binary to try to simplify it.
??? We may want later to remove this, once simplification is
separated from this function. */
if (GET_CODE (XEXP (x, 1)) == CONST_INT)
if (GET_CODE (XEXP (x, 1)) == CONST_INT && XEXP (x, 1) == to)
validate_change (object, loc,
simplify_gen_binary
(PLUS, GET_MODE (x), XEXP (x, 0), XEXP (x, 1)), 1);