X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.c;h=0f51dd1ebf05cb5fd28cb599547983bc3b4fb4e8;hb=bd31a5350ce9e110c058b4ad2223d460c9eb5c4e;hp=c53b78c4f439d84d74118c04fd741f21a0bae382;hpb=18d6880947147277c8f13ad3eff3f7ad6e0a9d87;p=libfirm

diff --git a/ir/be/bearch.c b/ir/be/bearch.c
index c53b78c4f..0f51dd1eb 100644
--- a/ir/be/bearch.c
+++ b/ir/be/bearch.c
@@ -1,69 +1,79 @@
-/**
- * Processor architecture specification.
- * @author Sebastian Hack
- * @date 11.2.2005
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
  *
- * $Id$
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
  */
 
+/**
+ * @file
+ * @brief       Processor architecture specification.
+ * @author      Sebastian Hack
+ * @version     $Id$
+ */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-
 #include <string.h>
 
-#include "bearch.h"
+#include "bearch_t.h"
 #include "ircons_t.h"
 #include "irnode_t.h"
+#include "xmalloc.h"
 
 #include "bitset.h"
 #include "pset.h"
-#include "entity.h"
+#include "raw_bitset.h"
 
 #include "irprintf.h"
 
 /* Initialize the architecture environment struct. */
 arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env)
 {
-  memset(env, 0, sizeof(*env));
-  env->isa                  = isa_if->init(file_handle);
-  env->isa->main_env        = main_env;
-  return env;
+	memset(env, 0, sizeof(*env));
+	env->isa                  = isa_if->init(file_handle);
+	env->isa->main_env        = main_env;
+	return env;
 }
 
 arch_env_t *arch_env_push_irn_handler(arch_env_t *env,
-    const arch_irn_handler_t *handler)
+                                      const arch_irn_handler_t *handler)
 {
-  assert(env->handlers_tos < ARCH_MAX_HANDLERS);
-  env->handlers[env->handlers_tos++] = handler;
-  return env;
+	assert(env->handlers_tos < ARCH_MAX_HANDLERS);
+	env->handlers[env->handlers_tos++] = handler;
+	return env;
 }
 
 const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env)
 {
-  assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
-  return env->handlers[--env->handlers_tos];
+   	assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
+	return env->handlers[--env->handlers_tos];
 }
 
 static const arch_irn_ops_t *fallback_irn_ops = NULL;
 
 int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
 {
-  if(bs) {
-    int i, n;
-    for(i = 0, n = cls->n_regs; i < n; ++i)
-      bitset_set(bs, i);
-  }
+	if(bs) {
+		int i, n;
+		for(i = 0, n = cls->n_regs; i < n; ++i)
+			bitset_set(bs, i);
+	}
 
-  return cls->n_regs;
+	return cls->n_regs;
 }
 
 /**
@@ -75,17 +85,17 @@ int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
 static INLINE const arch_irn_ops_t *
 get_irn_ops(const arch_env_t *env, const ir_node *irn)
 {
-  int i;
+	int i;
 
-  for(i = env->handlers_tos - 1; i >= 0; --i) {
-    const arch_irn_handler_t *handler = env->handlers[i];
-    const arch_irn_ops_t *ops = handler->get_irn_ops(handler, irn);
+	for(i = env->handlers_tos - 1; i >= 0; --i) {
+		const arch_irn_handler_t *handler = env->handlers[i];
+		const arch_irn_ops_t *ops = handler->get_irn_ops(handler, irn);
 
-    if(ops)
-      return ops;
-  }
+		if(ops)
+			return ops;
+	}
 
-  return fallback_irn_ops;
+	return fallback_irn_ops;
 }
 
 const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn) {
@@ -93,26 +103,25 @@ const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn
 }
 
 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
-    arch_register_req_t *req, const ir_node *irn, int pos)
+                                                 const ir_node *irn, int pos)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  req->type = arch_register_req_type_none;
-  return ops->impl->get_irn_reg_req(ops, req, irn, pos);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	return ops->impl->get_irn_reg_req(ops, irn, pos);
 }
 
 void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  ops->impl->set_frame_offset(ops, irn, offset);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	ops->impl->set_frame_offset(ops, irn, offset);
 }
 
-entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn)
+ir_entity *arch_get_frame_entity(const arch_env_t *env, const ir_node *irn)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  return ops->impl->get_frame_entity(ops, irn);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	return ops->impl->get_frame_entity(ops, irn);
 }
 
-void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, entity *ent)
+void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, ir_entity *ent)
 {
 	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
 	ops->impl->set_frame_entity(ops, irn, ent);
@@ -126,16 +135,18 @@ int arch_get_sp_bias(const arch_env_t *env, ir_node *irn)
 
 arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  if(ops->impl->get_inverse) {
-    return ops->impl->get_inverse(ops, irn, i, inverse, obstack);
-  } else {
-    return NULL;
-  }
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+
+	if(ops->impl->get_inverse) {
+		return ops->impl->get_inverse(ops, irn, i, inverse, obstack);
+	} else {
+		return NULL;
+	}
 }
 
 int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i) {
 	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+
 	if(ops->impl->possible_memory_operand) {
 		return ops->impl->possible_memory_operand(ops, irn, i);
 	} else {
@@ -145,6 +156,7 @@ int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsi
 
 void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i) {
 	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+
 	if(ops->impl->perform_memory_operand) {
 		ops->impl->perform_memory_operand(ops, irn, spill, i);
 	} else {
@@ -154,47 +166,50 @@ void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *s
 
 int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  if(ops->impl->get_op_estimated_cost) {
-    return ops->impl->get_op_estimated_cost(ops, irn);
-  } else {
-    return 1;
-  }
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+
+	if(ops->impl->get_op_estimated_cost) {
+		return ops->impl->get_op_estimated_cost(ops, irn);
+	} else {
+		return 1;
+	}
 }
 
 int arch_is_possible_memory_operand(const arch_env_t *env, const ir_node *irn, int i)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  if(ops->impl->possible_memory_operand) {
-    return ops->impl->possible_memory_operand(ops, irn, i);
-  } else {
-    return 0;
-  }
+   	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+
+	if(ops->impl->possible_memory_operand) {
+	   	return ops->impl->possible_memory_operand(ops, irn, i);
+	} else {
+		return 0;
+	}
 }
 
 int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs)
 {
-  arch_register_req_t local_req;
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
-
-  if(req->type == arch_register_req_type_none) {
-	  bitset_clear_all(bs);
-	  return 0;
-  }
-
-  if(arch_register_req_is(req, limited)) {
-	  req->limited(req->limited_env, bs);
-	  return bitset_popcnt(bs);
-  }
-
-  arch_register_class_put(req->cls, bs);
-  return req->cls->n_regs;
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
+
+	if(req->type == arch_register_req_type_none) {
+		bitset_clear_all(bs);
+		return 0;
+	}
+
+	if(arch_register_req_is(req, limited)) {
+		rbitset_copy_to_bitset(req->limited, bs);
+		return bitset_popcnt(bs);
+	}
+
+	arch_register_class_put(req->cls, bs);
+	return req->cls->n_regs;
 }
 
-void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs)
+void arch_put_non_ignore_regs(const arch_env_t *env,
+                              const arch_register_class_t *cls, bitset_t *bs)
 {
 	int i;
+	(void) env;
 
 	for(i = 0; i < cls->n_regs; ++i) {
 		if(!arch_register_type_is(&cls->regs[i], ignore))
@@ -202,10 +217,12 @@ void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t
 	}
 }
 
-int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls)
+int arch_count_non_ignore_regs(const arch_env_t *env,
+                               const arch_register_class_t *cls)
 {
 	int i;
 	int result = 0;
+	(void) env;
 
 	for(i = 0; i < cls->n_regs; ++i) {
 		if(!arch_register_type_is(&cls->regs[i], ignore))
@@ -218,64 +235,65 @@ int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_
 int arch_is_register_operand(const arch_env_t *env,
     const ir_node *irn, int pos)
 {
-	arch_register_req_t local_req;
 	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-	const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
+	const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
+
 	return req != NULL;
 }
 
 int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn,
     int pos, const arch_register_t *reg)
 {
-	arch_register_req_t req;
+	const arch_register_req_t *req;
 
-	arch_get_register_req(env, &req, irn, pos);
+	req = arch_get_register_req(env, irn, pos);
 
-	if(req.type == arch_register_req_type_none)
+	if(req->type == arch_register_req_type_none)
 		return 0;
 
-	if(arch_register_req_is(&req, limited)) {
-		bitset_t *bs = bitset_alloca(req.cls->n_regs);
-		req.limited(req.limited_env, bs);
-		return bitset_is_set(bs, arch_register_get_index(reg));
+	if(arch_register_req_is(req, limited)) {
+		assert(arch_register_get_class(reg) == req->cls);
+		return rbitset_is_set(req->limited, arch_register_get_index(reg));
 	}
 
-	return req.cls == reg->reg_class;
+	return req->cls == reg->reg_class;
 }
 
 const arch_register_class_t *
 arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos)
 {
-  arch_register_req_t local_req;
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
-  return req ? req->cls : NULL;
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
+
+	assert(req->type != arch_register_req_type_none || req->cls == NULL);
+
+	return req->cls;
 }
 
 extern const arch_register_t *
 arch_get_irn_register(const arch_env_t *env, const ir_node *irn)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  return ops->impl->get_irn_reg(ops, irn);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	return ops->impl->get_irn_reg(ops, irn);
 }
 
 extern void arch_set_irn_register(const arch_env_t *env,
     ir_node *irn, const arch_register_t *reg)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  ops->impl->set_irn_reg(ops, irn, reg);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	ops->impl->set_irn_reg(ops, irn, reg);
 }
 
 extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  return ops->impl->classify(ops, irn);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	return ops->impl->classify(ops, irn);
 }
 
 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn)
 {
-  const arch_irn_ops_t *ops = get_irn_ops(env, irn);
-  return ops->impl->get_flags(ops, irn);
+	const arch_irn_ops_t *ops = get_irn_ops(env, irn);
+	return ops->impl->get_flags(ops, irn);
 }
 
 extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
@@ -286,37 +304,59 @@ extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
 		XXX(ignore);
 		XXX(rematerializable);
 		XXX(modify_sp);
+		XXX(modify_flags);
 		XXX(none);
 #undef XXX
 	}
 	return "n/a";
 }
 
-extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req)
+extern char *arch_register_req_format(char *buf, size_t len,
+                                      const arch_register_req_t *req,
+                                      const ir_node *node)
 {
 	char tmp[128];
 	snprintf(buf, len, "class: %s", req->cls->name);
 
 	if(arch_register_req_is(req, limited)) {
-		bitset_pos_t elm;
-		bitset_t *bs = bitset_alloca(req->cls->n_regs);
-		req->limited(req->limited_env, bs);
+		unsigned n_regs = req->cls->n_regs;
+		unsigned i;
+
 		strncat(buf, " limited:", len);
-		bitset_foreach(bs, elm) {
-			strncat(buf, " ", len);
-			strncat(buf, req->cls->regs[elm].name, len);
+		for(i = 0; i < n_regs; ++i) {
+			if(rbitset_is_set(req->limited, i)) {
+				const arch_register_t *reg = &req->cls->regs[i];
+				strncat(buf, " ", len);
+				strncat(buf, reg->name, len);
+			}
 		}
 	}
 
 	if(arch_register_req_is(req, should_be_same)) {
-		ir_snprintf(tmp, sizeof(tmp), " same to: %+F", req->other_different);
+		const ir_node *same = get_irn_n(skip_Proj_const(node), req->other_same[0]);
+		ir_snprintf(tmp, sizeof(tmp), " same to: %+F", same);
 		strncat(buf, tmp, len);
+		if (req->other_same[1] != -1) {
+			const ir_node *same2 = get_irn_n(skip_Proj_const(node), req->other_same[1]);
+			ir_snprintf(tmp, sizeof(tmp), "or %+F", same2);
+			strncat(buf, tmp, len);
+		}
 	}
 
 	if(arch_register_req_is(req, should_be_different)) {
-		ir_snprintf(tmp, sizeof(tmp), " different to: %+F", req->other_different);
+		const ir_node *different = get_irn_n(skip_Proj_const(node), req->other_different);
+		ir_snprintf(tmp, sizeof(tmp), " different to: %+F", different);
 		strncat(buf, tmp, len);
 	}
 
 	return buf;
 }
+
+static const arch_register_req_t no_requirement = {
+	arch_register_req_type_none,
+	NULL,
+	NULL,
+	{ -1, -1 },
+	-1
+};
+const arch_register_req_t *arch_no_register_req = &no_requirement;