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gimplify.c (gimplify_modify_expr_rhs): Don't return GS_OK for stripping WITH_SIZE_EXPR. 

* gimplify.c (gimplify_modify_expr_rhs): Don't return GS_OK for
	stripping WITH_SIZE_EXPR.
	(gimplify_expr) [MODIFY_EXPR]: Trust GS_OK even if the rhs didn't
	change.

From-SVN: r159124
This commit is contained in:
Jason Merrill 2010-05-06 15:46:03 -04:00 committed by Jason Merrill
parent 9aaa1ee883
commit ebad523301
2 changed files with 17 additions and 11 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2010-05-06 Jason Merrill <jason@redhat.com>
* gimplify.c (gimplify_modify_expr_rhs): Don't return GS_OK for
stripping WITH_SIZE_EXPR.
(gimplify_expr) [MODIFY_EXPR]: Trust GS_OK even if the rhs didn't
change.
2010-05-06 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* config.gcc: Removed mips-sgi-irix5*, mips-sgi-irix6.[0-4]* from

21
gcc/gimplify.c
View File

@ -4291,7 +4291,10 @@ gimplify_modify_expr_rhs (tree *expr_p, tree *from_p, tree *to_p,
if (TREE_CODE (TREE_OPERAND (*from_p, 0)) == CALL_EXPR)
{
*from_p = TREE_OPERAND (*from_p, 0);
ret = GS_OK;
/* We don't change ret in this case because the
WITH_SIZE_EXPR might have been added in
gimplify_modify_expr, so returning GS_OK would lead to an
infinite loop. */
changed = true;
}
break;
@ -6628,16 +6631,12 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
case MODIFY_EXPR:
case INIT_EXPR:
{
tree from = TREE_OPERAND (*expr_p, 1);
ret = gimplify_modify_expr (expr_p, pre_p, post_p,
fallback != fb_none);
/* Don't let the end of loop logic change GS_OK into GS_ALL_DONE
if the RHS has changed. */
if (ret == GS_OK && *expr_p == save_expr
&& TREE_OPERAND (*expr_p, 1) != from)
continue;
}
ret = gimplify_modify_expr (expr_p, pre_p, post_p,
fallback != fb_none);
/* Don't let the end of loop logic change GS_OK to GS_ALL_DONE;
gimplify_modify_expr_rhs might have changed the RHS. */
if (ret == GS_OK && *expr_p)
continue;
break;
case TRUTH_ANDIF_EXPR: