view tools/binding/llvm/util.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 1ba61de8796b
children
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// Written in the D programming language by Tomas Lindquist Olsen 2008
// Binding of llvm.c.Core values for D.
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
module llvm.util;

//we need <cstring>
version(Tango) {
    import tango.stdc.string;
}
else {
    import std.c.string;
}

///
char[] from_stringz(char* p)
{
    if (p is null)
        return "";
    return p[0..strlen(p)];
}

///
char* to_stringz(char[] s)
{
    return (s~\0).ptr;
}