view dmd/root/gnuc.c @ 1491:360a8e8eea51

Teach stack promotion to walk the CFG when a potential reuse of an allocation is found to see if it can actually happen instead of just assuming it will. This allows it to catch cases like {{{ int i; Foo f; while (cond(i)) f = new Foo(i++); return f.value; }}} where it previously wouldn't because a phi using the allocation would appear in the condition block to propagate it to the use after the loop.
author Frits van Bommel <fvbommel wxs.nl>
date Thu, 11 Jun 2009 02:04:44 +0200
parents 1853dcd9b944
children
line wrap: on
line source


// Put functions in here missing from gnu C

#include "gnuc.h"

int memicmp(const char *s1, const char *s2, int n)
{
    int result = 0;

    for (int i = 0; i < n; i++)
    {	char c1 = s1[i];
	char c2 = s2[i];

	result = c1 - c2;
	if (result)
	{
	    if ('A' <= c1 && c1 <= 'Z')
		c1 += 'a' - 'A';
	    if ('A' <= c2 && c2 <= 'Z')
		c2 += 'a' - 'A';
	    result = c1 - c2;
	    if (result)
		break;
	}
    }
    return result;
}

int stricmp(const char *s1, const char *s2)
{
    int result = 0;

    for (;;)
    {	char c1 = *s1;
	char c2 = *s2;

	result = c1 - c2;
	if (result)
	{
	    if ('A' <= c1 && c1 <= 'Z')
		c1 += 'a' - 'A';
	    if ('A' <= c2 && c2 <= 'Z')
		c2 += 'a' - 'A';
	    result = c1 - c2;
	    if (result)
		break;
	}
	if (!c1)
	    break;
	s1++;
	s2++;
    }
    return result;
}