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[Bug middle-end/47917] snprintf(..., "const string") should be optimized into memcpy
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 14 Mar 2011 20:30:42 +0000
- Subject: [Bug middle-end/47917] snprintf(..., "const string") should be optimized into memcpy
- Auto-submitted: auto-generated
- References: <bug-47917-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47917
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-14 20:30:29 UTC ---
Author: jakub
Date: Mon Mar 14 20:30:24 2011
New Revision: 170959
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170959
Log:
PR middle-end/47917
* builtins.c (fold_builtin_snprintf): New function.
(fold_builtin_3): Call it for BUILT_IN_SNPRINTF.
(fold_builtin_4): Likewise.
* gcc.c-torture/execute/pr47917.c: New test.
* gcc.dg/pr47917.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr47917.c
trunk/gcc/testsuite/gcc.dg/pr47917.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog