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[Bug middle-end/29272] [4.2 Regression] memcpy optimization causes wrong-code
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Oct 2006 09:47:11 -0000
- Subject: [Bug middle-end/29272] [4.2 Regression] memcpy optimization causes wrong-code
- References: <bug-29272-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from jakub at gcc dot gnu dot org 2006-10-10 09:47 -------
Subject: Bug 29272
Author: jakub
Date: Tue Oct 10 09:46:59 2006
New Revision: 117599
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117599
Log:
PR middle-end/29272
* builtins.c (var_decl_component_p): New function.
(fold_builtin_memset, fold_builtin_memory_op): Restrict
single entry optimization to variables and components thereof.
* gcc.c-torture/execute/20060930-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/20060930-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29272