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re PR middle-end/17793 (Ada bootstrap failure)

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PR middle-end/17793
	* gimplify.c (gimplify_addr_expr) <VIEW_CONVERT_EXPR>: Look
	through the operand if it is a useless type conversion.

From-SVN: r89488
This commit is contained in:
Eric Botcazou 2004-10-23 11:16:46 +02:00 committed by Eric Botcazou
parent 757f86d6a4
commit 918047526d
2 changed files with 13 additions and 0 deletions

6
gcc/ChangeLog

@ -1,3 +1,9 @@
2004-10-23 Eric Botcazou <ebotcazou@libertysurf.fr>
PR middle-end/17793
* gimplify.c (gimplify_addr_expr) <VIEW_CONVERT_EXPR>: Look
through the operand if it is a useless type conversion.
2004-10-23 Ben Elliston <bje@au.ibm.com>
* cfg.c (remove_edge): Use VEC_unordered_remove.

7
gcc/gimplify.c

@ -3093,6 +3093,13 @@ gimplify_addr_expr (tree *expr_p, tree *pre_p, tree *post_p)
??? The interactions of VIEW_CONVERT_EXPR and aliasing is not at
all clear. The impact of this transformation is even less clear. */
/* If the operand is a useless conversion, look through it. Doing so
guarantees that the ADDR_EXPR and its operand will remain of the
same type. */
if (tree_ssa_useless_type_conversion (TREE_OPERAND (op0, 0)))
op0 = TREE_OPERAND (op0, 0);
*expr_p = fold_convert (TREE_TYPE (expr),
build_fold_addr_expr (TREE_OPERAND (op0, 0)));
ret = GS_OK;