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view lwlib/lw_win.h @ 416:b4d0eafc5bfe
Fix code generation error in gcc6809
It turned out that under some circumstances, the gcc optimizer would select
an instruction sequence that had the sense of a branch inverted. It seems
this was due to a particular instruction pattern included in the machine
description not being quite right with respect to how the condition codes
were tracked. Removing that instruction pattern seems to fix things
(subtraction with the arguments reversed). gcc seems to be smart enough to
figure out how to reorganize code to work without this reversed sense
subtraction and then do the right thing.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Thu, 24 Mar 2016 20:07:20 -0600 |
| parents | 4130ffdeb5c8 |
| children | 33e37b3d98cf |
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/* lw_win.h Copyright © 2015 William Astle This file is part of LWTOOLS. LWTOOLS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef ___lw_win_h_seen___ #define ___lw_win_h_seen___ #include "lw_string.h" #include <string.h> #define strcasecmp _stricmp #define strncasecmp _strnicmp #define unlink _unlink int c99_snprintf(char* str, size_t size, const char* format, ...); #define snprintf c99_snprintf #endif /* ___lw_win_h_seen___ */