Mercurial > projects > ldc
view lphobos/std/system.d @ 1418:f5f8c21ce6ef
Make "`aa[key]`" use the same runtime call as "`key in aa`". The runtime calls
these were using were different, but with equivalent definitions.
With `ldc -O3`, the following functions now all compile to the exact same code:
{{{
int[int] y;
void foo(int x) {
if (x in y) {
auto z = x in y;
sink(*z);
}
}
void bar(int x) {
if (x in y) {
sink(y[x]);
}
}
void baz(int x) {
if (auto p = x in y) {
sink(*p);
}
}
}}}
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Mon, 25 May 2009 12:50:40 +0200 |
parents | 373489eeaf90 |
children |
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// Written in the D programming language /** * Information about the target operating system, environment, and CPU * Authors: Walter Bright, www.digitalmars.com * License: Public Domain * Macros: * WIKI = Phobos/StdSystem */ /* NOTE: This file has been patched from the original DMD distribution to work with the GDC compiler. Modified by David Friedman, September 2007 */ // Information about the target operating system, environment, and CPU module std.system; const { // Operating system family enum Family { Win32 = 1, // Microsoft 32 bit Windows systems linux, // all linux systems Unix, // Unix-like NoSystem // No operating system } version (Win32) { Family family = Family.Win32; } else version (linux) { Family family = Family.linux; } else version (Unix) { Family family = Family.Unix; } else version (NoSystem) { Family family = Family.NoSystem; } else { static assert(0); } // More specific operating system name enum OS { Windows95 = 1, Windows98, WindowsME, WindowsNT, Windows2000, WindowsXP, RedHatLinux, } /// Byte order endianness enum Endian { BigEndian, /// big endian byte order LittleEndian /// little endian byte order } version(LittleEndian) { /// Native system endianness Endian endian = Endian.LittleEndian; } else { Endian endian = Endian.BigEndian; } } // The rest should get filled in dynamically at runtime OS os = OS.WindowsXP; // Operating system version as in // os_major.os_minor uint os_major = 4; uint os_minor = 0;