allocate temps based on size rather than type (get better re-usage this way)

put temps onto the local scope.

tools/qfcc/include/qfcc.h

@@ -441,7 +441,7 @@ void PR_NewLine (void);
 def_t *PR_GetDef (type_t *type, const char *name, def_t *scope,
 				  qboolean allocate);
 def_t *PR_NewDef (type_t *type, const char *name, def_t *scope);
-def_t *PR_GetTempDef (type_t *type);
+def_t *PR_GetTempDef (type_t *type, def_t *scope);
 void PR_FreeTempDefs ();
 void PR_ResetTempDefs ();
 void PR_FlushScope (def_t *scope);

tools/qfcc/source/pr_comp.c

@@ -335,6 +335,7 @@ PR_ParseStatement (void)
 	def_t			*e;
 	dstatement_t	*patch1, *patch2;
 
+	PR_FreeTempDefs ();
 	do {
 		if (PR_Check (tt_punct, "{")) {
 			do {
@@ -364,6 +365,7 @@ PR_ParseStatement (void)
 			PR_Expect (tt_punct, ")");
 			patch1 = &statements[numstatements];
 			PR_Statement (op_ifnot, e, 0);
+			PR_FreeTempDefs ();
 			PR_ParseStatement ();
 			junkdef.ofs = patch2 - &statements[numstatements];
 			PR_Statement (op_goto, &junkdef, 0);
@@ -394,6 +396,7 @@ PR_ParseStatement (void)
 			PR_Expect (tt_punct, "(");
 			e = PR_Expression (TOP_PRIORITY);
 			PR_Expect (tt_punct, ")");
+			PR_FreeTempDefs ();
 
 			patch1 = &statements[numstatements];
 			PR_Statement (op_ifnot, e, 0);
@@ -560,6 +563,13 @@ PR_ParseDefs (void)
 
 //				if (pr_dumpasm)
 //					PR_PrintFunction (def);
+				//{
+				//	def_t *d;
+				//	printf ("%s\n", def->name);
+				//	for (d = def->scope_next; d; d = d->scope_next) {
+				//		printf ("%s: %d %d %d\n", d->name, d->ofs, d->type->type, type_size[d->type->type]);
+				//	}
+				//}
 
 				// fill in the dfunction
 				df = &functions[numfunctions];

tools/qfcc/source/pr_def.c

@@ -27,7 +27,7 @@
 
 def_t		*pr_global_defs[MAX_REGS];	// to find def for a global variable
 int 		pr_edict_size;
-static def_t *free_temps[ev_type_count];
+static def_t *free_temps[4];	// indexted by type size
 static def_t temp_scope;
 
 static hashtab_t  *defs_by_name;
@@ -146,49 +146,49 @@ PR_NewDef (type_t *type, const char *name, def_t *scope)
 }
 
 def_t *
-PR_GetTempDef (type_t *type)
+PR_GetTempDef (type_t *type, def_t *scope)
 {
-	int t = type->type;
+	int size = type_size[type->type];
-	def_t *d;
+	def_t *def;
-	if (free_temps[t]) {
+	if (free_temps[size]) {
-		d = free_temps[t];
+		def = free_temps[size];
-		free_temps[t] = d->next;
+		free_temps[size] = def->next;
+		def->type = type;
 	} else {
-		d = PR_NewDef (type, 0, 0);
+		def = PR_NewDef (type, 0, scope);
 	}
-	if (!d->ofs) {
+	if (!def->ofs) {
-		d->ofs = numpr_globals;
+		def->ofs = numpr_globals;
-		numpr_globals += type_size[t];
+		numpr_globals += type_size[size];
 	}
-	d->scope_next = temp_scope.scope_next;
+	def->next = temp_scope.next;
-	temp_scope.scope_next = d;
+	temp_scope.next = def;
-	return d;
+	return def;
 }
 
 void
 PR_FreeTempDefs (void)
 {
-	def_t *def;
+	def_t *def, *d;
-	etype_t type;
+	int size;
 
-	for (def = temp_scope.scope_next; def; def = def->scope_next) {
+	for (def = temp_scope.next; def; def = d) {
-		type = def->type->type;
+		size = type_size[def->type->type];
-		def->next = free_temps[type];
+		d = def->next;
-		free_temps[type] = def;
+		def->next = free_temps[size];
+		free_temps[size] = def;
 	}
-	temp_scope.scope_next = 0;
+	temp_scope.next = 0;
 }
 
 void
 PR_ResetTempDefs (void)
 {
 	int i;
-	def_t *d;
+	//def_t *d;
 
 	for (i = 0; i < ev_type_count; i++) {
-		for (d = free_temps[i]; d && d->ofs; d = d->next) {
+		free_temps[i] = 0;
-			d->ofs = 0;
-		}
 	}
 }
 
@@ -198,6 +198,7 @@ PR_FlushScope (def_t *scope)
 	def_t *def;
 
 	for (def = scope->scope_next; def; def = def->scope_next) {
-		Hash_Del (defs_by_name, def->name);
+		if (def->name)
+			Hash_Del (defs_by_name, def->name);
 	}
 }

tools/qfcc/source/pr_opcode.c

@@ -154,7 +154,7 @@ PR_Statement (opcode_t * op, def_t * var_a, def_t * var_b)
 		var_c = NULL;
 		statement->c = 0;
 	} else {	// allocate result space
-		var_c = PR_GetTempDef (op->type_c->type);
+		var_c = PR_GetTempDef (op->type_c->type, pr_scope);
 		statement->c = var_c->ofs;
 	}