view lphobos/typeinfo1/ti_void.d @ 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 2c3cd3596187
children
line wrap: on
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// void

module typeinfo1.ti_void;

class TypeInfo_v : TypeInfo
{
    char[] toString() { return "void"; }

    hash_t getHash(void *p)
    {
	assert(0);
    }

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

    int compare(void *p1, void *p2)
    {
	return *cast(byte *)p1 - *cast(byte *)p2;
    }

    size_t tsize()
    {
	return void.sizeof;
    }

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

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

    uint flags()
    {
	return 1;
    }
}