view lphobos/typeinfo1/ti_delegate.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 2c3cd3596187
children
line wrap: on
line source


// delegate

module typeinfo1.ti_delegate;

alias void delegate(int) dg;

class TypeInfo_D : TypeInfo
{
    hash_t getHash(void *p)
    {	long l = *cast(long *)p;

	return cast(uint)(l + (l >> 32));
    }

    int equals(void *p1, void *p2)
    {
	return *cast(dg *)p1 == *cast(dg *)p2;
    }

    size_t tsize()
    {
	return dg.sizeof;
    }

    void swap(void *p1, void *p2)
    {
	dg t;

	t = *cast(dg *)p1;
	*cast(dg *)p1 = *cast(dg *)p2;
	*cast(dg *)p2 = t;
    }

    uint flags()
    {
	return 1;
    }
}