Mercurial > projects > ldc
view lphobos/std/stdarg.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 | eef8ac26c66c |
children |
line wrap: on
line source
/* * Placed in public domain. * Written by Hauke Duden and Walter Bright */ /* This is for use with variable argument lists with extern(D) linkage. */ /* Modified for LDC (LLVM D Compiler) by Tomas Lindquist Olsen, 2007 */ module std.stdarg; alias void* va_list; T va_arg(T)(ref va_list vp) { size_t size = T.sizeof > size_t.sizeof ? size_t.sizeof : T.sizeof; va_list vptmp = cast(va_list)((cast(size_t)vp + size - 1) & ~(size - 1)); vp = vptmp + T.sizeof; return *cast(T*)vptmp; }