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view dmd2/man.c @ 1275:bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
It uses the machinery of the standard -simplify-libcalls pass, but optimizes
calls to the D runtime instead of calls to C libraries.
At the moment, these optimizations are implemented by this pass:
- Avoid the runtime call for `arr.length = newlen` if it can determine that
the new length isn't longer than the old one.
- Ditto for `cast(T[]) arr` if it will clearly always succeed.
(e.g. if the length of the original array is zero, or if the old element
size is a multiple of the new element size)
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Tue, 28 Apr 2009 21:58:06 +0200 |
parents | f04dde6e882c |
children |
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// Compiler implementation of the D programming language // Copyright (c) 2008-2008 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #include <stdio.h> #include <string.h> #include <stdlib.h> #include <assert.h> #if _WIN32 #include <windows.h> #pragma comment(lib,"shell32.lib") void browse(const char *url) { ShellExecute(NULL, "open", url, NULL, NULL, SW_SHOWNORMAL); } #endif #if linux || __APPLE__ #include <sys/types.h> #include <sys/wait.h> #include <unistd.h> void browse(const char *url) { pid_t childpid; const char *args[3]; const char *browser = getenv("BROWSER"); if (browser) browser = strdup(browser); else browser = "firefox"; args[0] = browser; args[1] = url; args[2] = NULL; childpid = fork(); if (childpid == 0) { execvp(args[0], (char**)args); perror(args[0]); // failed to execute return; } } #endif