X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_new_nodes.c;h=27caa2ffae578878c12cb767d3b3495850bf83d1;hb=662fc44c951bdb45a9b7d9563e9ffbb87101b9e4;hp=e716c5847fabab1017dc550902db7ca88e0a1743;hpb=2d61612857ee98aa3273e239833530c057ecd8d5;p=libfirm

diff --git a/ir/be/ia32/ia32_new_nodes.c b/ir/be/ia32/ia32_new_nodes.c
index e716c5847..27caa2ffa 100644
--- a/ir/be/ia32/ia32_new_nodes.c
+++ b/ir/be/ia32/ia32_new_nodes.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -24,7 +24,7 @@
  * @version     $Id$
  *
  * This file implements the creation of the achitecture specific firm opcodes
- * and the coresponding node constructors for the ia32 assembler irg.
+ * and the corresponding node constructors for the ia32 assembler irg.
  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -96,11 +96,27 @@ static void dump_reg_req(FILE *F, ir_node *n, const arch_register_req_t **reqs,
 			}
 
 			if (reqs[i]->type & arch_register_req_type_should_be_same) {
-				ir_fprintf(F, " same as %+F", get_irn_n(n, reqs[i]->other_same));
+				unsigned other = reqs[i]->other_same;
+				int i;
+
+				ir_fprintf(F, " same as");
+				for (i = 0; 1U << i <= other; ++i) {
+					if (other & (1U << i)) {
+						ir_fprintf(F, " %+F", get_irn_n(n, i));
+					}
+				}
 			}
 
-			if (reqs[i]->type & arch_register_req_type_should_be_different) {
-				ir_fprintf(F, " different from %+F", get_irn_n(n, reqs[i]->other_different));
+			if (reqs[i]->type & arch_register_req_type_must_be_different) {
+				unsigned other = reqs[i]->other_different;
+				int i;
+
+				ir_fprintf(F, " different from");
+				for (i = 0; 1U << i <= other; ++i) {
+					if (other & (1U << i)) {
+						ir_fprintf(F, " %+F", get_irn_n(n, i));
+					}
+				}
 			}
 
 			fprintf(F, "\n");
@@ -137,7 +153,7 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 
 				fputc(' ', F);
 				if(attr->symconst) {
-					if(attr->attr.data.am_sc_sign) {
+					if(attr->sc_sign) {
 						fputc('-', F);
 					}
 					fputs(get_entity_name(attr->symconst), F);
@@ -149,8 +165,7 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 					fprintf(F, "%ld", attr->offset);
 				}
 			}
-
-			{
+			else {
 				const ia32_attr_t *attr = get_ia32_attr_const(n);
 
 				if(attr->am_sc != NULL || attr->am_offs != 0)
@@ -248,12 +263,6 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 				case ia32_am_Source:
 					fprintf(F, "source only (Load)");
 					break;
-				case ia32_am_Dest:
-					fprintf(F, "dest only (Load+Store)");
-					break;
-				case ia32_am_Full:
-					fprintf(F, "full");
-					break;
 				default:
 					fprintf(F, "unknown (%d)", get_ia32_am_support(n));
 					break;
@@ -276,17 +285,17 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 			fprintf(F, "AM scale = %d\n", get_ia32_am_scale(n));
 
 			/* dump pn code */
-			if(is_ia32_SwitchJmp(n)) {
-				fprintf(F, "pn_code = %ld\n", get_ia32_pncode(n));
-			} else {
-				if(get_ia32_pncode(n) & ia32_pn_Cmp_Unsigned) {
-					long pnc = get_ia32_pncode(n);
-					fprintf(F, "pn_code = %ld (%s, unsigned)\n",
-					        pnc, get_pnc_string(pnc & ~ia32_pn_Cmp_Unsigned));
-				} else {
-					fprintf(F, "pn_code = %ld (%s)\n", get_ia32_pncode(n),
-					        get_pnc_string(get_ia32_pncode(n)));
-				}
+			if (is_ia32_SwitchJmp(n)) {
+				fprintf(F, "pn_code = %ld\n", get_ia32_condcode(n));
+			} else if (is_ia32_CMov(n) || is_ia32_Set(n) || is_ia32_Jcc(n)) {
+				ia32_attr_t *attr = get_ia32_attr(n);
+				long pnc = get_ia32_condcode(n);
+				fprintf(F, "pn_code = 0x%lX (%s)\n", pnc, get_pnc_string(pnc & pn_Cmp_True));
+				fprintf(F, "ins_permuted = %u \n", attr->data.ins_permuted);
+				fprintf(F, "cmp_unsigned = %u \n", attr->data.cmp_unsigned);
+			}
+			else if (is_ia32_CopyB(n) || is_ia32_CopyB_i(n)) {
+				fprintf(F, "size = %u\n", get_ia32_copyb_size(n));
 			}
 
 			/* dump n_res */
@@ -298,12 +307,12 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 			/* commutative */
 			fprintf(F, "commutative = %d\n", is_ia32_commutative(n));
 
-			/* got lea */
-			fprintf(F, "got loea = %d\n", is_ia32_got_lea(n));
-
 			/* need stackent */
 			fprintf(F, "need stackent = %d\n", is_ia32_need_stackent(n));
 
+			/* need stackent */
+			fprintf(F, "is reload = %d\n", is_ia32_is_reload(n));
+
 			/* dump latency */
 			fprintf(F, "latency = %d\n", get_ia32_latency(n));
 
@@ -326,6 +335,9 @@ static int ia32_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 				if (flags & arch_irn_flags_modify_sp) {
 					fprintf(F, " modify_sp");
 				}
+				if (flags & arch_irn_flags_modify_flags) {
+					fprintf(F, " modify_flags");
+				}
 			}
 			fprintf(F, " (%d)\n", flags);
 
@@ -411,13 +423,47 @@ const ia32_asm_attr_t *get_ia32_asm_attr_const(const ir_node *node) {
 	return asm_attr;
 }
 
+ia32_immediate_attr_t *get_ia32_immediate_attr(ir_node *node) {
+	ia32_attr_t           *attr      = get_ia32_attr(node);
+	ia32_immediate_attr_t *imm_attr  = CAST_IA32_ATTR(ia32_immediate_attr_t, attr);
+
+	return imm_attr;
+}
+
 const ia32_immediate_attr_t *get_ia32_immediate_attr_const(const ir_node *node)
 {
-	const ia32_attr_t     *attr     = get_ia32_attr_const(node);
-	const ia32_immediate_attr_t *immediate_attr
-		= CONST_CAST_IA32_ATTR(ia32_immediate_attr_t, attr);
+	const ia32_attr_t           *attr     = get_ia32_attr_const(node);
+	const ia32_immediate_attr_t *imm_attr = CONST_CAST_IA32_ATTR(ia32_immediate_attr_t, attr);
+
+	return imm_attr;
+}
+
+ia32_condcode_attr_t *get_ia32_condcode_attr(ir_node *node) {
+	ia32_attr_t          *attr    = get_ia32_attr(node);
+	ia32_condcode_attr_t *cc_attr = CAST_IA32_ATTR(ia32_condcode_attr_t, attr);
+
+	return cc_attr;
+}
+
+const ia32_condcode_attr_t *get_ia32_condcode_attr_const(const ir_node *node) {
+	const ia32_attr_t          *attr    = get_ia32_attr_const(node);
+	const ia32_condcode_attr_t *cc_attr = CONST_CAST_IA32_ATTR(ia32_condcode_attr_t, attr);
+
+	return cc_attr;
+}
 
-	return immediate_attr;
+ia32_copyb_attr_t *get_ia32_copyb_attr(ir_node *node) {
+	ia32_attr_t       *attr       = get_ia32_attr(node);
+	ia32_copyb_attr_t *copyb_attr = CAST_IA32_ATTR(ia32_copyb_attr_t, attr);
+
+	return copyb_attr;
+}
+
+const ia32_copyb_attr_t *get_ia32_copyb_attr_const(const ir_node *node) {
+	const ia32_attr_t       *attr       = get_ia32_attr_const(node);
+	const ia32_copyb_attr_t *copyb_attr = CONST_CAST_IA32_ATTR(ia32_copyb_attr_t, attr);
+
+	return copyb_attr;
 }
 
 /**
@@ -536,10 +582,24 @@ int get_ia32_am_scale(const ir_node *node) {
  * Sets the index register scale for address mode.
  */
 void set_ia32_am_scale(ir_node *node, int scale) {
-	ia32_attr_t *attr   = get_ia32_attr(node);
+	ia32_attr_t *attr = get_ia32_attr(node);
+	assert(0 <= scale && scale < 4 && "AM scale out of range");
 	attr->data.am_scale = scale;
 }
 
+void ia32_copy_am_attrs(ir_node *to, const ir_node *from)
+{
+	set_ia32_ls_mode(to, get_ia32_ls_mode(from));
+	set_ia32_am_scale(to, get_ia32_am_scale(from));
+	set_ia32_am_sc(to, get_ia32_am_sc(from));
+	if(is_ia32_am_sc_sign(from))
+		set_ia32_am_sc_sign(to);
+	add_ia32_am_offs_int(to, get_ia32_am_offs_int(from));
+	set_ia32_frame_ent(to, get_ia32_frame_ent(from));
+	if (is_ia32_use_frame(from))
+		set_ia32_use_frame(to);
+}
+
 /**
  * Sets the uses_frame flag.
  */
@@ -588,30 +648,6 @@ int is_ia32_commutative(const ir_node *node) {
 	return attr->data.is_commutative;
 }
 
-/**
- * Sets node got_lea.
- */
-void set_ia32_got_lea(ir_node *node) {
-	ia32_attr_t *attr  = get_ia32_attr(node);
-	attr->data.got_lea = 1;
-}
-
-/**
- * Clears node got_lea.
- */
-void clear_ia32_got_lea(ir_node *node) {
-	ia32_attr_t *attr  = get_ia32_attr(node);
-	attr->data.got_lea = 0;
-}
-
-/**
- * Checks if node got lea.
- */
-int is_ia32_got_lea(const ir_node *node) {
-	const ia32_attr_t *attr = get_ia32_attr_const(node);
-	return attr->data.got_lea;
-}
-
 void set_ia32_need_stackent(ir_node *node) {
 	ia32_attr_t *attr     = get_ia32_attr(node);
 	attr->data.need_stackent = 1;
@@ -627,6 +663,16 @@ int is_ia32_need_stackent(const ir_node *node) {
 	return attr->data.need_stackent;
 }
 
+void set_ia32_is_reload(ir_node *node) {
+	ia32_attr_t *attr = get_ia32_attr(node);
+	attr->data.is_reload = 1;
+}
+
+int is_ia32_is_reload(const ir_node *node) {
+	const ia32_attr_t *attr = get_ia32_attr_const(node);
+	return attr->data.is_reload;
+}
+
 /**
  * Gets the mode of the stored/loaded value (only set for Store/Load)
  */
@@ -668,16 +714,9 @@ void set_ia32_frame_ent(ir_node *node, ir_entity *ent) {
  * Gets the instruction latency.
  */
 unsigned get_ia32_latency(const ir_node *node) {
-	const ia32_attr_t *attr = get_ia32_attr_const(node);
-	return attr->latency;
-}
-
-/**
-* Sets the instruction latency.
-*/
-void set_ia32_latency(ir_node *node, unsigned latency) {
-	ia32_attr_t *attr = get_ia32_attr(node);
-	attr->latency     = latency;
+	const ir_op *op               = get_irn_op(node);
+	const ia32_op_attr_t *op_attr = (ia32_op_attr_t*) get_op_attr(op);
+	return op_attr->latency;
 }
 
 /**
@@ -766,6 +805,11 @@ void set_ia32_flags(ir_node *node, arch_irn_flags_t flags) {
 	attr->data.flags  = flags;
 }
 
+void add_ia32_flags(ir_node *node, arch_irn_flags_t flags) {
+	ia32_attr_t *attr  = get_ia32_attr(node);
+	attr->data.flags  |= flags;
+}
+
 /**
  * Returns the result register slots of an ia32 node.
  */
@@ -783,37 +827,30 @@ int get_ia32_n_res(const ir_node *node) {
 }
 
 /**
- * Returns the flavour of an ia32 node,
+ * Returns the condition code of a node.
  */
-ia32_op_flavour_t get_ia32_flavour(const ir_node *node) {
-	const ia32_attr_t *attr = get_ia32_attr_const(node);
-	return attr->data.op_flav;
-}
-
-/**
- * Sets the flavour of an ia32 node to flavour_Div/Mod/DivMod/Mul/Mulh.
- */
-void set_ia32_flavour(ir_node *node, ia32_op_flavour_t op_flav) {
-	ia32_attr_t *attr  = get_ia32_attr(node);
-	attr->data.op_flav = op_flav;
+long get_ia32_condcode(const ir_node *node)
+{
+	const ia32_condcode_attr_t *attr = get_ia32_condcode_attr_const(node);
+	return attr->pn_code;
 }
 
 /**
- * Returns the projnum code.
+ * Sets the condition code of a node
  */
-long get_ia32_pncode(const ir_node *node)
+void set_ia32_condcode(ir_node *node, long code)
 {
-	const ia32_attr_t *attr = get_ia32_attr_const(node);
-	return attr->pn_code;
+	ia32_condcode_attr_t *attr = get_ia32_condcode_attr(node);
+	attr->pn_code = code;
 }
 
 /**
- * Sets the projnum code
+ * Returns the condition code of a node.
  */
-void set_ia32_pncode(ir_node *node, long code)
+unsigned get_ia32_copyb_size(const ir_node *node)
 {
-	ia32_attr_t *attr = get_ia32_attr(node);
-	attr->pn_code     = code;
+	const ia32_copyb_attr_t *attr = get_ia32_copyb_attr_const(node);
+	return attr->size;
 }
 
 /**
@@ -847,7 +884,7 @@ const be_execution_unit_t ***get_ia32_exec_units(const ir_node *node) {
  */
 unsigned get_ia32_exc_label(const ir_node *node) {
 	const ia32_attr_t *attr = get_ia32_attr_const(node);
-	return attr->data.except_label;
+	return attr->data.has_except_label;
 }
 
 /**
@@ -855,7 +892,27 @@ unsigned get_ia32_exc_label(const ir_node *node) {
  */
 void set_ia32_exc_label(ir_node *node, unsigned flag) {
 	ia32_attr_t *attr = get_ia32_attr(node);
-	attr->data.except_label = flag;
+	attr->data.has_except_label = flag;
+}
+
+/**
+ * Return the exception label id.
+ */
+ir_label_t get_ia32_exc_label_id(const ir_node *node) {
+	const ia32_attr_t *attr = get_ia32_attr_const(node);
+
+	assert(attr->data.has_except_label);
+	return attr->exc_label;
+}
+
+/**
+ * Assign the exception label id.
+ */
+void set_ia32_exc_label_id(ir_node *node, ir_label_t id) {
+	ia32_attr_t *attr = get_ia32_attr(node);
+
+	assert(attr->data.has_except_label);
+	attr->exc_label = id;
 }
 
 #ifndef NDEBUG
@@ -889,24 +946,6 @@ void set_ia32_orig_node(ir_node *node, const char *name) {
  *     |_|
  ******************************************************************************************************/
 
-/**
- * Sets the AddrMode(S|D) attribute
- */
-void set_ia32_AddrMode(ir_node *node, char direction) {
-	ia32_attr_t *attr = get_ia32_attr(node);
-
-	switch (direction) {
-		case 'D':
-			attr->data.tp = ia32_AddrModeD;
-			break;
-		case 'S':
-			attr->data.tp = ia32_AddrModeS;
-			break;
-		default:
-			assert(0 && "wrong AM type");
-	}
-}
-
 /**
  * Returns whether or not the node is an AddrModeS node.
  */
@@ -973,12 +1012,14 @@ int get_ia32_out_regnr(const ir_node *node, int pos) {
 
 void ia32_swap_left_right(ir_node *node)
 {
-	ir_node *left  = get_irn_n(node, 2);
-	ir_node *right = get_irn_n(node, 3);
+	ia32_attr_t *attr  = get_ia32_attr(node);
+	ir_node     *left  = get_irn_n(node, n_ia32_binary_left);
+	ir_node     *right = get_irn_n(node, n_ia32_binary_right);
+
 	assert(is_ia32_commutative(node));
-	set_irn_n(node, 2, right);
-	set_irn_n(node, 3, left);
-	set_ia32_pncode(node, get_inversed_pnc(get_ia32_pncode(node)));
+	attr->data.ins_permuted = !attr->data.ins_permuted;
+	set_irn_n(node, n_ia32_binary_left,  right);
+	set_irn_n(node, n_ia32_binary_right, left);
 }
 
 /**
@@ -1000,17 +1041,15 @@ void init_ia32_attributes(ir_node *node, arch_irn_flags_t flags,
                           const arch_register_req_t **in_reqs,
                           const arch_register_req_t **out_reqs,
                           const be_execution_unit_t ***execution_units,
-                          int n_res, unsigned latency)
+                          int n_res)
 {
-	ir_graph       *irg  = get_irn_irg(node);
-	struct obstack *obst = get_irg_obstack(irg);
-	ia32_attr_t    *attr = get_ia32_attr(node);
-	arch_register_t**slots;
+	ir_graph        *irg  = get_irn_irg(node);
+	struct obstack  *obst = get_irg_obstack(irg);
+	ia32_attr_t     *attr = get_ia32_attr(node);
 
 	set_ia32_flags(node, flags);
 	set_ia32_in_req_all(node, in_reqs);
 	set_ia32_out_req_all(node, out_reqs);
-	set_ia32_latency(node, latency);
 
 	attr->exec_units  = execution_units;
 #ifndef NDEBUG
@@ -1020,8 +1059,9 @@ void init_ia32_attributes(ir_node *node, arch_irn_flags_t flags,
 	attr->out_flags = NEW_ARR_D(int, obst, n_res);
 	memset(attr->out_flags, 0, n_res * sizeof(attr->out_flags[0]));
 
-	attr->slots = slots = NEW_ARR_D(arch_register_t*, obst, n_res);
-	memset(slots, 0, n_res * sizeof(slots[0]));
+	attr->slots = NEW_ARR_D(const arch_register_t*, obst, n_res);
+	/* void* cast to suppress an incorrect warning on MSVC */
+	memset((void*)attr->slots, 0, n_res * sizeof(attr->slots[0]));
 }
 
 void
@@ -1030,6 +1070,8 @@ init_ia32_x87_attributes(ir_node *res)
 #ifndef NDEBUG
 	ia32_attr_t *attr  = get_ia32_attr(res);
 	attr->attr_type   |= IA32_ATTR_ia32_x87_attr_t;
+#else
+	(void) res;
 #endif
 	ia32_current_cg->do_x87_sim = 1;
 }
@@ -1040,6 +1082,8 @@ init_ia32_asm_attributes(ir_node *res)
 #ifndef NDEBUG
 	ia32_attr_t *attr  = get_ia32_attr(res);
 	attr->attr_type   |= IA32_ATTR_ia32_asm_attr_t;
+#else
+	(void) res;
 #endif
 }
 
@@ -1050,11 +1094,31 @@ init_ia32_immediate_attributes(ir_node *res, ir_entity *symconst,
 	ia32_immediate_attr_t *attr = get_irn_generic_attr(res);
 
 #ifndef NDEBUG
-	attr->attr.attr_type   |= IA32_ATTR_ia32_immediate_attr_t;
+	attr->attr.attr_type  |= IA32_ATTR_ia32_immediate_attr_t;
+#endif
+	attr->symconst = symconst;
+	attr->sc_sign  = symconst_sign;
+	attr->offset   = offset;
+}
+
+void
+init_ia32_copyb_attributes(ir_node *res, unsigned size) {
+	ia32_copyb_attr_t *attr = get_irn_generic_attr(res);
+
+#ifndef NDEBUG
+	attr->attr.attr_type  |= IA32_ATTR_ia32_copyb_attr_t;
+#endif
+	attr->size = size;
+}
+
+void
+init_ia32_condcode_attributes(ir_node *res, long pnc) {
+	ia32_condcode_attr_t *attr = get_irn_generic_attr(res);
+
+#ifndef NDEBUG
+	attr->attr.attr_type  |= IA32_ATTR_ia32_condcode_attr_t;
 #endif
-	attr->symconst             = symconst;
-	attr->attr.data.am_sc_sign = symconst_sign;
-	attr->offset               = offset;
+	attr->pn_code = pnc;
 }
 
 ir_node *get_ia32_result_proj(const ir_node *node)
@@ -1103,19 +1167,20 @@ int ia32_compare_attr(const ia32_attr_t *a, const ia32_attr_t *b) {
 	    || a->frame_ent != b->frame_ent)
 		return 1;
 
-	if(a->pn_code != b->pn_code)
+	if (a->data.tp != b->data.tp)
 		return 1;
 
-	if (a->data.tp != b->data.tp
-	    || a->data.op_flav != b->data.op_flav)
+	if (a->data.has_except_label != b->data.has_except_label)
 		return 1;
 
-	if (a->data.except_label != b->data.except_label)
+	if (a->data.ins_permuted != b->data.ins_permuted
+			|| a->data.cmp_unsigned != b->data.cmp_unsigned)
 		return 1;
 
 	return 0;
 }
 
+/** Compare nodes attributes for all "normal" nodes. */
 static
 int ia32_compare_nodes_attr(ir_node *a, ir_node *b)
 {
@@ -1125,12 +1190,46 @@ int ia32_compare_nodes_attr(ir_node *a, ir_node *b)
 	return ia32_compare_attr(attr_a, attr_b);
 }
 
+/** Compare node attributes for nodes with condition code. */
 static
-int ia32_compare_x87_attr(ir_node *a, ir_node *b)
+int ia32_compare_condcode_attr(ir_node *a, ir_node *b)
 {
-	return ia32_compare_nodes_attr(a, b);
+	const ia32_condcode_attr_t *attr_a;
+	const ia32_condcode_attr_t *attr_b;
+
+	if (ia32_compare_nodes_attr(a, b))
+		return 1;
+
+	attr_a = get_ia32_condcode_attr_const(a);
+	attr_b = get_ia32_condcode_attr_const(b);
+
+	if(attr_a->pn_code != attr_b->pn_code)
+		return 1;
+
+	return 0;
+}
+
+/** Compare node attributes for CopyB nodes. */
+static
+int ia32_compare_copyb_attr(ir_node *a, ir_node *b)
+{
+	const ia32_copyb_attr_t *attr_a;
+	const ia32_copyb_attr_t *attr_b;
+
+	if (ia32_compare_nodes_attr(a, b))
+		return 1;
+
+	attr_a = get_ia32_copyb_attr_const(a);
+	attr_b = get_ia32_copyb_attr_const(b);
+
+	if(attr_a->size != attr_b->size)
+		return 1;
+
+	return 0;
 }
 
+
+/** Compare ASM node attributes. */
 static
 int ia32_compare_asm_attr(ir_node *a, ir_node *b)
 {
@@ -1149,6 +1248,16 @@ int ia32_compare_asm_attr(ir_node *a, ir_node *b)
 	return 0;
 }
 
+/**
+ * Hash function for Immediates
+ */
+static unsigned ia32_hash_Immediate(const ir_node *irn) {
+	const ia32_immediate_attr_t *a = get_ia32_immediate_attr_const(irn);
+
+	return HASH_PTR(a->symconst) + (a->sc_sign << 16) + a->offset;
+}
+
+/** Compare node attributes for Immediates. */
 static
 int ia32_compare_immediate_attr(ir_node *a, ir_node *b)
 {
@@ -1156,13 +1265,21 @@ int ia32_compare_immediate_attr(ir_node *a, ir_node *b)
 	const ia32_immediate_attr_t *attr_b = get_ia32_immediate_attr_const(b);
 
 	if(attr_a->symconst != attr_b->symconst	||
-	   attr_a->attr.data.am_sc_sign != attr_b->attr.data.am_sc_sign ||
+	   attr_a->sc_sign != attr_b->sc_sign ||
 	   attr_a->offset != attr_b->offset)
 		return 1;
 
 	return 0;
 }
 
+/** Compare node attributes for x87 nodes. */
+static
+int ia32_compare_x87_attr(ir_node *a, ir_node *b)
+{
+	return ia32_compare_nodes_attr(a, b);
+}
+
+
 /* copies the ia32 attributes */
 static void ia32_copy_attr(const ir_node *old_node, ir_node *new_node)
 {