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C++ regalloc函数代码示例

本文整理汇总了C++中regalloc函数的典型用法代码示例。如果您正苦于以下问题：C++ regalloc函数的具体用法？C++ regalloc怎么用？C++ regalloc使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了regalloc函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: udivgen

void
udivgen(Node *l, Node *r, Node *ax, Node *dx)
{
	int a, s, t;
	uint32 m;
	Node nod;

	a = udiv(r->vconst, &m, &s, &t);
//print("a=%ud i=%ld p=%d s=%d m=%lux\n", a, (int32)r->vconst, t, s, m);
	if(t != 0) {
		gins(AMOVL, l, ax);
		gins(ASHRL, nodconst(t), ax);
		gins(AMOVL, nodconst(m), dx);
		gins(AMULL, dx, Z);
	}
	else if(a) {
		if(l->op != OREGISTER) {
			regalloc(&nod, l, Z);
			gins(AMOVL, l, &nod);
			l = &nod;
		}
		gins(AMOVL, nodconst(m), ax);
		gins(AMULL, l, Z);
		gins(AADDL, l, dx);
		gins(ARCRL, nodconst(1), dx);
		if(l == &nod)
			regfree(l);
	}
	else {
		gins(AMOVL, nodconst(m), ax);
		gins(AMULL, l, Z);
	}
	if(s != 0)
		gins(ASHRL, nodconst(s), dx);
}
开发者ID:8l，项目名称:go-learn，代码行数:35，代码来源:div.c

示例2: bitstore

void
bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn)
{
	int32_t v;
	Node nod;
	int sh;

	regalloc(&nod, b->left, Z);
	v = ~0 + (1L << b->type->nbits);
	gopcode(OAND, types[TLONG], nodconst(v), n1);
	gmove(n1, &nod);
	if(nn != Z)
		gmove(n1, nn);
	sh = b->type->shift;
	if(sh > 0)
		gopcode(OASHL, types[TLONG], nodconst(sh), &nod);
	v <<= sh;
	gopcode(OAND, types[TLONG], nodconst(~v), n3);
	gopcode(OOR, types[TLONG], n3, &nod);
	gmove(&nod, n2);

	regfree(&nod);
	regfree(n1);
	regfree(n2);
	regfree(n3);
}
开发者ID:carriercomm，项目名称:legacy，代码行数:26，代码来源:swt.c

示例3: bitstore

void
bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn)
{
	long v;
	Node nod, *l;
	int sh;

	/*
	 * n1 has adjusted/masked value
	 * n2 has address of cell
	 * n3 has contents of cell
	 */
	l = b->left;
	regalloc(&nod, l, Z);
	v = ~0 + (1L << b->type->nbits);
	gopcode(OAND, nodconst(v), Z, n1);
	gopcode(OAS, n1, Z, &nod);
	if(nn != Z)
		gopcode(OAS, n1, Z, nn);
	sh = b->type->shift;
	if(sh > 0)
		gopcode(OASHL, nodconst(sh), Z, &nod);
	v <<= sh;
	gopcode(OAND, nodconst(~v), Z, n3);
	gopcode(OOR, n3, Z, &nod);
	gopcode(OAS, &nod, Z, n2);

	regfree(&nod);
	regfree(n1);
	regfree(n2);
	regfree(n3);
}
开发者ID:AustenConrad，项目名称:plan-9，代码行数:32，代码来源:swt.c

示例4: swit1

void
swit1(C1 *q, int nc, long def, Node *n)
{
	Node tn;
	
	regalloc(&tn, &regnode, Z);
	swit2(q, nc, def, n, &tn);
	regfree(&tn);
}
开发者ID:AustenConrad，项目名称:plan-9，代码行数:9，代码来源:swt.c

示例5: bitstore

void
bitstore(Node *b, int n1, int n2, int n3, int result, Node *nn)
{
	long v;
	Node *l;
	Type *t;
	int sh, g, gs;

	/*
	 * n1 has adjusted/masked value
	 * n2 has address of cell
	 * n3 has contents of cell
	 */
	t = tfield;

	l = b->left;
	g = regalloc(t, D_NONE);
	v = ~0 + (1L << b->type->nbits);
	gopcode(OAND, t, D_CONST, nodconst(v), n1, l);
	gmove(t, t, n1, l, g, l);
	if(result != D_NONE)
		gmove(t, nn->type, n1, l, result, nn);
	sh = b->type->shift;
	if(sh > 0) {
		if(sh >= 8) {
			gs = regalloc(t, D_NONE);
			gmove(t, t, D_CONST, nodconst(sh), gs, l);
			gopcode(OASHL, t, gs, l, g, l);
			regfree(gs);
		} else
			gopcode(OASHL, t, D_CONST, nodconst(sh), g, l);
	}
	v <<= sh;
	gopcode(OAND, t, D_CONST, nodconst(~v), n3, l);
	gopcode(OOR, t, n3, l, g, l);
	gmove(t, t, g, l, n2|I_INDIR, l);

	regfree(g);
	regfree(n1);
	regfree(n2);
	regfree(n3);
}
开发者ID:8l，项目名称:inferno，代码行数:42，代码来源:swt.c

示例6: sext

void
sext(Node *d, Node *s, Node *l)
{
	if(s->reg == D_AX && !nodreg(d, Z, D_DX)) {
		reg[D_DX]++;
		gins(ACDQ, Z, Z);
	}
	else {
		regalloc(d, l, Z);
		gins(AMOVL, s, d);
		gins(ASARL, nodconst(31), d);
	}
}
开发者ID:8l，项目名称:go-learn，代码行数:13，代码来源:div.c

示例7: lcgen

void
lcgen(Node *n, Node *nn)
{
	Prog *p1;
	Node nod;

	if(debug['g']) {
		prtree(nn, "lcgen lhs");
		prtree(n, "lcgen");
	}
	if(n == Z || n->type == T)
		return;
	if(nn == Z) {
		nn = &nod;
		regalloc(&nod, n, Z);
	}
	switch(n->op) {
	default:
		if(n->addable < INDEXED) {
			diag(n, "unknown op in lcgen: %O", n->op);
			break;
		}
		nod = *n;
		nod.op = OADDR;
		nod.left = n;
		nod.right = Z;
		nod.type = types[TIND];
		gopcode(OAS, &nod, Z, nn);
		break;

	case OCOMMA:
		cgen(n->left, n->left);
		lcgen(n->right, nn);
		break;

	case OIND:
		cgen(n->left, nn);
		break;

	case OCOND:
		bcgen(n->left, 1);
		p1 = p;
		lcgen(n->right->left, nn);
		gbranch(OGOTO);
		patch(p1, pc);
		p1 = p;
		lcgen(n->right->right, nn);
		patch(p1, pc);
		break;
	}
}
开发者ID:AustenConrad，项目名称:plan-9，代码行数:51，代码来源:cgen.c

示例8: bitload

void
bitload(Node *b, Node *n1, Node *n2, Node *n3, Node *nn)
{
	int sh;
	int32_t v;
	Node *l;

	/*
	 * n1 gets adjusted/masked value
	 * n2 gets address of cell
	 * n3 gets contents of cell
	 */
	l = b->left;
	if(n2 != Z) {
		regalloc(n1, l, nn);
		reglcgen(n2, l, Z);
		regalloc(n3, l, Z);
		gmove(n2, n3);
		gmove(n3, n1);
	} else {
		regalloc(n1, l, nn);
		cgen(l, n1);
	}
	if(b->type->shift == 0 && typeu[b->type->etype]) {
		v = ~0 + (1L << b->type->nbits);
		gopcode(OAND, tfield, nodconst(v), n1);
	} else {
		sh = 32 - b->type->shift - b->type->nbits;
		if(sh > 0)
			gopcode(OASHL, tfield, nodconst(sh), n1);
		sh += b->type->shift;
		if(sh > 0)
			if(typeu[b->type->etype])
				gopcode(OLSHR, tfield, nodconst(sh), n1);
			else
				gopcode(OASHR, tfield, nodconst(sh), n1);
	}
}
开发者ID:carriercomm，项目名称:legacy，代码行数:38，代码来源:swt.c

示例9: swit1

void
swit1(C1 *q, int nc, int32 def, Node *n)
{
	Node nreg;

	regalloc(&nreg, n, Z);
	if(typev[n->type->etype])
		nreg.type = types[TVLONG];
	else
		nreg.type = types[TLONG];
	cgen(n, &nreg);
	swit2(q, nc, def, &nreg);
	regfree(&nreg);
}
开发者ID:rosrad，项目名称:go-rep，代码行数:14，代码来源:swt.c

示例10: genasop

static void
genasop(int o, Node *l, Node *r, Node *nn)
{
	Node nod, nod1, nod2;
	int hardleft;

	hardleft = l->addable < INDEXED || l->complex >= FNX;
	if(l->complex >= r->complex) {
		if(hardleft)
			reglcgen(&nod2, l, Z);
		else
			nod2 = *l;
		regalloc(&nod1, r, Z);
		cgen(r, &nod1);
	} else {
		regalloc(&nod1, r, Z);
		cgen(r, &nod1);
		if(hardleft)
			reglcgen(&nod2, l, Z);
		else
			nod2 = *l;
	}
	if(nod1.type == nod2.type || !typefd[nod1.type->etype])
		regalloc(&nod, &nod2, nn);
	else
		regalloc(&nod, &nod1, Z);
	gmove(&nod2, &nod);
	gopcode(o, &nod1, Z, &nod);
	gmove(&nod, &nod2);
	if(nn != Z)
		gmove(&nod2, nn);
	regfree(&nod);
	regfree(&nod1);
	if(hardleft)
		regfree(&nod2);
}
开发者ID:0intro，项目名称:plan9-mips，代码行数:36，代码来源:cgen.c

示例11: doswit

void
doswit(Node *n)
{
	Case *c;
	C1 *q, *iq;
	long def, nc, i;
	Node tn;

	def = 0;
	nc = 0;
	for(c = cases; c->link != C; c = c->link) {
		if(c->def) {
			if(def)
				diag(n, "more than one default in switch");
			def = c->label;
			continue;
		}
		nc++;
	}

	iq = alloc(nc*sizeof(C1));
	q = iq;
	for(c = cases; c->link != C; c = c->link) {
		if(c->def)
			continue;
		q->label = c->label;
		q->val = c->val;
		q++;
	}
	qsort(iq, nc, sizeof(C1), swcmp);
	if(debug['W'])
		for(i=0; i<nc; i++)
			print("case %2ld: = %.8lux\n", i, iq[i].val);
	if(def == 0)
		def = breakpc;
	for(i=0; i<nc-1; i++)
		if(iq[i].val == iq[i+1].val)
			diag(n, "duplicate cases in switch %ld", iq[i].val);
	regalloc(&tn, &regnode, Z);
	swit1(iq, nc, def, n, &tn);
	regfree(&tn);
}
开发者ID:BGCX261，项目名称:znos-git，代码行数:42，代码来源:swt.c

示例12: create_verilog_signal

/*!
 *	@brief	信号のVerilog HDL生成
 */
int create_verilog_signal()
{
	SIGNAL_TREE *now_signal_tree;
	char *buf;
	char *str;

	buf = calloc(STR_MAX, 1);

    now_signal_tree = signal_tree_top;
    while(now_signal_tree != NULL){
		strcpy(buf ,"");
		if(
			(now_signal_tree->flag == SIGNAL_FLAG_REG) ||
			(now_signal_tree->flag == SIGNAL_FLAG_WIRE)
		){
			switch(now_signal_tree->flag){
				case SIGNAL_FLAG_REG:
					sprintf(buf, "reg ");
					break;
				case SIGNAL_FLAG_WIRE:
					sprintf(buf, "wire ");
					break;
				default:
					break;
			}
			if(now_signal_tree->width > 0){
				sprintf(buf, "%s[%d:0] ", buf, now_signal_tree->width-1);
			}
			str = regalloc(now_signal_tree->label);
			sprintf(buf, "%s%s;", buf, str);
			free(str);
			now_signal_tree->verilog = charalloc(buf);
		}

        now_signal_tree = now_signal_tree->next_ptr;
    }

    free(buf);

    return 0;
}
开发者ID:aquaxis，项目名称:synverll，代码行数:44，代码来源:parser_ir_signal.c

示例13: _re_comp

int
_re_comp(regexp_t* re, const char* pattern, char* handle, unsigned int size)
{
	register Env_t*	env = (Env_t*)handle;
	register int	n;

	if (size <= sizeof(Env_t))
		return 50;
	env->buf = env->cur = (char*)env + sizeof(Env_t);
	env->size = size - sizeof(Env_t);
	regalloc(env, block, REG_NOFREE);
	n = regcomp(&env->re, pattern, REG_LENIENT|REG_NULL);
	switch (n)
	{
	case 0:
		break;
	case REG_ERANGE:
		n = 11;
		break;
	case REG_BADBR:
		n = 16;
		break;
	case REG_ESUBREG:
		n = 25;
		break;
	case REG_EPAREN:
		n = 42;
		break;
	case REG_EBRACK:
		n = 49;
		break;
	default:
		n = 50;
		break;
	}
	re->re_nbra = env->re.re_nsub;
	return n;
}
开发者ID:ISLEcode，项目名称:kornshell，代码行数:38，代码来源:regexp.c

示例14: cgen

void
cgen(Node *n, Node *nn)
{
	Node *l, *r;
	Prog *p1;
	Node nod, nod1, nod2, nod3, nod4;
	int o;
	long v, curs;

	if(debug['g']) {
		prtree(nn, "cgen lhs");
		prtree(n, "cgen");
	}
	if(n == Z || n->type == T)
		return;
	if(typesuv[n->type->etype]) {
		sugen(n, nn, n->type->width);
		return;
	}
	l = n->left;
	r = n->right;
	o = n->op;
	if(n->addable >= INDEXED) {
		if(nn == Z) {
			switch(o) {
			default:
				nullwarn(Z, Z);
				break;
			case OINDEX:
				nullwarn(l, r);
				break;
			}
			return;
		}
		gmove(n, nn);
		return;
	}
	curs = cursafe;

	if(n->complex >= FNX)
	if(l->complex >= FNX)
	if(r != Z && r->complex >= FNX)
	switch(o) {
	default:
		regret(&nod, r);
		cgen(r, &nod);

		regsalloc(&nod1, r);
		gopcode(OAS, &nod, Z, &nod1);

		regfree(&nod);
		nod = *n;
		nod.right = &nod1;
		cgen(&nod, nn);
		return;

	case OFUNC:
	case OCOMMA:
	case OANDAND:
	case OOROR:
	case OCOND:
	case ODOT:
		break;
	}

	switch(o) {
	default:
		diag(n, "unknown op in cgen: %O", o);
		break;

	case OAS:
		if(l->op == OBIT)
			goto bitas;
		if(l->addable >= INDEXED && l->complex < FNX) {
			if(nn != Z || r->addable < INDEXED) {
				if(r->complex >= FNX && nn == Z)
					regret(&nod, r);
				else
					regalloc(&nod, r, nn);
				cgen(r, &nod);
				gmove(&nod, l);
				if(nn != Z)
					gmove(&nod, nn);
				regfree(&nod);
			} else
				gmove(r, l);
			break;
		}
		if(l->complex >= r->complex) {
			reglcgen(&nod1, l, Z);
			if(r->addable >= INDEXED) {
				gmove(r, &nod1);
				if(nn != Z)
					gmove(r, nn);
				regfree(&nod1);
				break;
			}
			regalloc(&nod, r, nn);
			cgen(r, &nod);
		} else {
//.........这里部分代码省略.........
开发者ID:AustenConrad，项目名称:plan-9，代码行数:101，代码来源:cgen.c

示例15: cgen

void
cgen(Node *n, int result, Node *nn)
{
	Node *l, *r, nod;
	int lg, rg, xg, yg, g, o;
	long v;
	Prog *p1;

	if(n == Z || n->type == T)
		return;
	if(typesuv[n->type->etype]) {
		sugen(n, result, nn, n->type->width);
		return;
	}
	if(debug['g']) {
		if(result == D_TREE)
			prtree(nn, "result");
		else
			print("result = %R\n", result);
		prtree(n, "cgen");
	}
	l = n->left;
	r = n->right;
	o = n->op;
	if(n->addable >= INDEXED) {
		if(result == D_NONE) {
			if(nn == Z)
				switch(o) {
				default:
					nullwarn(Z, Z);
					break;
				case OINDEX:
					nullwarn(l, r);
					break;
				}
			return;
		}
		gmove(n->type, nn->type, D_TREE, n, result, nn);
		return;
	}

	v = 0; /* set */
	switch(o) {
	default:
		diag(n, "unknown op in cgen: %O", o);
		break;

	case OAS:
		if(l->op == OBIT)
			goto bitas;
		/*
		 * recursive use of result
		 */
		if(result == D_NONE)
		if(l->addable > INDEXED)
		if(l->complex < FNX) {
			cgen(r, D_TREE, l);
			break;
		}

		/*
		 * function calls on both sides
		 */
		if(l->complex >= FNX && r->complex >= FNX) {
			cgen(r, D_TOS, r);
			v = argoff;
			lg = regaddr(result);
			lcgen(l, lg, Z);
			lg |= I_INDIR;
			adjsp(v - argoff);
			gmove(r->type, l->type, D_TOS, r, lg, l);
			if(result != D_NONE)
				gmove(l->type, nn->type, lg, l, result, nn);
			regfree(lg);
			break;
		}

		rg = D_TREE;
		lg = D_TREE;
		if(r->complex >= l->complex) {
			/*
			 * right side before left
			 */
			if(result != D_NONE) {
				rg = regalloc(n->type, result);
				cgen(r, rg, n);
			} else
			if(r->complex >= FNX || r->addable < INDEXED) {
				rg = regalloc(r->type, result);
				cgen(r, rg, r);
			}
			if(l->addable < INDEXED) {
				lg = regaddr(lg);
				lcgen(l, lg, Z);
				lg |= I_INDIR;
			}
		} else {
			/*
			 * left before right
			 */
//.........这里部分代码省略.........
开发者ID:8l，项目名称:inferno，代码行数:101，代码来源:cgen.c


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