]> git.xonotic.org Git - xonotic/gmqcc.git/blobdiff - ir.c
actually no :)
[xonotic/gmqcc.git] / ir.c
diff --git a/ir.c b/ir.c
index 99fa8056edf5616a7f8446be7939254c58184635..5e885872876327ea17a9325b79a4a527800d9d67 100644 (file)
--- a/ir.c
+++ b/ir.c
@@ -1,6 +1,7 @@
 /*
- * Copyright (C) 2012
+ * Copyright (C) 2012, 2013
  *     Wolfgang Bumiller
+ *     Dale Weiler
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
  * this software and associated documentation files (the "Software"), to deal in
@@ -22,6 +23,7 @@
  */
 #include <stdlib.h>
 #include <string.h>
+
 #include "gmqcc.h"
 #include "ir.h"
 
@@ -42,10 +44,13 @@ const char *type_name[TYPE_COUNT] = {
     "variant",
     "struct",
     "union",
-    "array"
+    "array",
+
+    "nil",
+    "<no-expression>"
 };
 
-size_t type_sizeof_[TYPE_COUNT] = {
+static size_t type_sizeof_[TYPE_COUNT] = {
     1, /* TYPE_VOID     */
     1, /* TYPE_STRING   */
     1, /* TYPE_FLOAT    */
@@ -59,9 +64,11 @@ size_t type_sizeof_[TYPE_COUNT] = {
     0, /* TYPE_STRUCT   */
     0, /* TYPE_UNION    */
     0, /* TYPE_ARRAY    */
+    0, /* TYPE_NIL      */
+    0, /* TYPE_NOESPR   */
 };
 
-uint16_t type_store_instr[TYPE_COUNT] = {
+const uint16_t type_store_instr[TYPE_COUNT] = {
     INSTR_STORE_F, /* should use I when having integer support */
     INSTR_STORE_S,
     INSTR_STORE_F,
@@ -78,12 +85,14 @@ uint16_t type_store_instr[TYPE_COUNT] = {
 
     INSTR_STORE_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
-uint16_t field_store_instr[TYPE_COUNT] = {
+const uint16_t field_store_instr[TYPE_COUNT] = {
     INSTR_STORE_FLD,
     INSTR_STORE_FLD,
     INSTR_STORE_FLD,
@@ -100,12 +109,14 @@ uint16_t field_store_instr[TYPE_COUNT] = {
 
     INSTR_STORE_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
-uint16_t type_storep_instr[TYPE_COUNT] = {
+const uint16_t type_storep_instr[TYPE_COUNT] = {
     INSTR_STOREP_F, /* should use I when having integer support */
     INSTR_STOREP_S,
     INSTR_STOREP_F,
@@ -122,12 +133,14 @@ uint16_t type_storep_instr[TYPE_COUNT] = {
 
     INSTR_STOREP_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
-uint16_t type_eq_instr[TYPE_COUNT] = {
+const uint16_t type_eq_instr[TYPE_COUNT] = {
     INSTR_EQ_F, /* should use I when having integer support */
     INSTR_EQ_S,
     INSTR_EQ_F,
@@ -144,12 +157,14 @@ uint16_t type_eq_instr[TYPE_COUNT] = {
 
     INSTR_EQ_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
-uint16_t type_ne_instr[TYPE_COUNT] = {
+const uint16_t type_ne_instr[TYPE_COUNT] = {
     INSTR_NE_F, /* should use I when having integer support */
     INSTR_NE_S,
     INSTR_NE_F,
@@ -166,14 +181,16 @@ uint16_t type_ne_instr[TYPE_COUNT] = {
 
     INSTR_NE_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
-uint16_t type_not_instr[TYPE_COUNT] = {
+const uint16_t type_not_instr[TYPE_COUNT] = {
     INSTR_NOT_F, /* should use I when having integer support */
-    INSTR_NOT_S,
+    VINSTR_END,  /* not to be used, depends on string related -f flags */
     INSTR_NOT_F,
     INSTR_NOT_V,
     INSTR_NOT_ENT,
@@ -188,14 +205,39 @@ uint16_t type_not_instr[TYPE_COUNT] = {
 
     INSTR_NOT_V, /* variant, should never be accessed */
 
-    AINSTR_END, /* struct */
-    AINSTR_END, /* union  */
-    AINSTR_END, /* array  */
+    VINSTR_END, /* struct */
+    VINSTR_END, /* union  */
+    VINSTR_END, /* array  */
+    VINSTR_END, /* nil    */
+    VINSTR_END, /* noexpr */
 };
 
 /* protos */
-static void ir_gen_extparam(ir_builder *ir);
-
+static ir_value*       ir_value_var(const char *name, int st, int vtype);
+static bool            ir_value_set_name(ir_value*, const char *name);
+static void            ir_value_dump(ir_value*, int (*oprintf)(const char*,...));
+
+static ir_value*       ir_gen_extparam_proto(ir_builder *ir);
+static void            ir_gen_extparam      (ir_builder *ir);
+
+static bool            ir_builder_set_name(ir_builder *self, const char *name);
+
+static ir_function*    ir_function_new(struct ir_builder_s *owner, int returntype);
+static bool            ir_function_set_name(ir_function*, const char *name);
+static void            ir_function_delete(ir_function*);
+static void            ir_function_dump(ir_function*, char *ind, int (*oprintf)(const char*,...));
+
+static ir_value*       ir_block_create_general_instr(ir_block *self, lex_ctx, const char *label,
+                                        int op, ir_value *a, ir_value *b, int outype);
+static void            ir_block_delete(ir_block*);
+static ir_block*       ir_block_new(struct ir_function_s *owner, const char *label);
+static bool GMQCC_WARN ir_block_create_store(ir_block*, lex_ctx, ir_value *target, ir_value *what);
+static bool            ir_block_set_label(ir_block*, const char *label);
+static void            ir_block_dump(ir_block*, char *ind, int (*oprintf)(const char*,...));
+
+static bool            ir_instr_op(ir_instr*, int op, ir_value *value, bool writing);
+static void            ir_instr_delete(ir_instr*);
+static void            ir_instr_dump(ir_instr* in, char *ind, int (*oprintf)(const char*,...));
 /* error functions */
 
 static void irerror(lex_ctx ctx, const char *msg, ...)
@@ -220,7 +262,7 @@ static bool irwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
  * Vector utility functions
  */
 
-bool GMQCC_WARN vec_ir_value_find(ir_value **vec, ir_value *what, size_t *idx)
+static bool GMQCC_WARN vec_ir_value_find(ir_value **vec, const ir_value *what, size_t *idx)
 {
     size_t i;
     size_t len = vec_size(vec);
@@ -233,7 +275,7 @@ bool GMQCC_WARN vec_ir_value_find(ir_value **vec, ir_value *what, size_t *idx)
     return false;
 }
 
-bool GMQCC_WARN vec_ir_block_find(ir_block **vec, ir_block *what, size_t *idx)
+static bool GMQCC_WARN vec_ir_block_find(ir_block **vec, ir_block *what, size_t *idx)
 {
     size_t i;
     size_t len = vec_size(vec);
@@ -246,7 +288,7 @@ bool GMQCC_WARN vec_ir_block_find(ir_block **vec, ir_block *what, size_t *idx)
     return false;
 }
 
-bool GMQCC_WARN vec_ir_instr_find(ir_instr **vec, ir_instr *what, size_t *idx)
+static bool GMQCC_WARN vec_ir_instr_find(ir_instr **vec, ir_instr *what, size_t *idx)
 {
     size_t i;
     size_t len = vec_size(vec);
@@ -278,14 +320,19 @@ ir_builder* ir_builder_new(const char *modulename)
     self->functions   = NULL;
     self->globals     = NULL;
     self->fields      = NULL;
-    self->extparams   = NULL;
     self->filenames   = NULL;
     self->filestrings = NULL;
     self->htglobals   = util_htnew(IR_HT_SIZE);
     self->htfields    = util_htnew(IR_HT_SIZE);
     self->htfunctions = util_htnew(IR_HT_SIZE);
 
-    self->max_locals  = 0;
+    self->extparams       = NULL;
+    self->extparam_protos = NULL;
+
+    self->first_common_globaltemp = 0;
+    self->max_globaltemps         = 0;
+    self->first_common_local      = 0;
+    self->max_locals              = 0;
 
     self->str_immediate = 0;
     self->name = NULL;
@@ -294,6 +341,12 @@ ir_builder* ir_builder_new(const char *modulename)
         return NULL;
     }
 
+    self->nil = ir_value_var("nil", store_value, TYPE_NIL);
+    self->nil->cvq = CV_CONST;
+
+    self->reserved_va_count = NULL;
+    self->code              = code_init();
+
     return self;
 }
 
@@ -312,6 +365,7 @@ void ir_builder_delete(ir_builder* self)
         ir_value_delete(self->extparams[i]);
     }
     vec_free(self->extparams);
+    vec_free(self->extparam_protos);
     for (i = 0; i != vec_size(self->globals); ++i) {
         ir_value_delete(self->globals[i]);
     }
@@ -319,9 +373,12 @@ void ir_builder_delete(ir_builder* self)
     for (i = 0; i != vec_size(self->fields); ++i) {
         ir_value_delete(self->fields[i]);
     }
+    ir_value_delete(self->nil);
     vec_free(self->fields);
     vec_free(self->filenames);
     vec_free(self->filestrings);
+
+    code_cleanup(self->code);
     mem_d(self);
 }
 
@@ -333,7 +390,7 @@ bool ir_builder_set_name(ir_builder *self, const char *name)
     return !!self->name;
 }
 
-ir_function* ir_builder_get_function(ir_builder *self, const char *name)
+static ir_function* ir_builder_get_function(ir_builder *self, const char *name)
 {
     return (ir_function*)util_htget(self->htfunctions, name);
 }
@@ -368,7 +425,7 @@ ir_function* ir_builder_create_function(ir_builder *self, const char *name, int
     return fn;
 }
 
-ir_value* ir_builder_get_global(ir_builder *self, const char *name)
+static ir_value* ir_builder_get_global(ir_builder *self, const char *name)
 {
     return (ir_value*)util_htget(self->htglobals, name);
 }
@@ -391,7 +448,14 @@ ir_value* ir_builder_create_global(ir_builder *self, const char *name, int vtype
     return ve;
 }
 
-ir_value* ir_builder_get_field(ir_builder *self, const char *name)
+ir_value* ir_builder_get_va_count(ir_builder *self)
+{
+    if (self->reserved_va_count)
+        return self->reserved_va_count;
+    return (self->reserved_va_count = ir_builder_create_global(self, "reserved:va_count", TYPE_FLOAT));
+}
+
+static ir_value* ir_builder_get_field(ir_builder *self, const char *name)
 {
     return (ir_value*)util_htget(self->htfields, name);
 }
@@ -415,10 +479,10 @@ ir_value* ir_builder_create_field(ir_builder *self, const char *name, int vtype)
  *IR Function
  */
 
-bool ir_function_naive_phi(ir_function*);
-void ir_function_enumerate(ir_function*);
-bool ir_function_calculate_liferanges(ir_function*);
-bool ir_function_allocate_locals(ir_function*);
+static bool ir_function_naive_phi(ir_function*);
+static void ir_function_enumerate(ir_function*);
+static bool ir_function_calculate_liferanges(ir_function*);
+static bool ir_function_allocate_locals(ir_function*);
 
 ir_function* ir_function_new(ir_builder* owner, int outtype)
 {
@@ -449,8 +513,11 @@ ir_function* ir_function_new(ir_builder* owner, int outtype)
     self->values = NULL;
     self->locals = NULL;
 
+    self->max_varargs = 0;
+
     self->code_function_def = -1;
     self->allocated_locals = 0;
+    self->globaltemps      = 0;
 
     self->run_id = 0;
     return self;
@@ -512,7 +579,7 @@ void ir_function_delete(ir_function *self)
     mem_d(self);
 }
 
-void ir_function_collect_value(ir_function *self, ir_value *v)
+static void ir_function_collect_value(ir_function *self, ir_value *v)
 {
     vec_push(self->values, v);
 }
@@ -535,7 +602,7 @@ static bool instr_is_operation(uint16_t op)
              (op >= INSTR_CALL0  && op <= INSTR_CALL8) );
 }
 
-bool ir_function_pass_peephole(ir_function *self)
+static bool ir_function_pass_peephole(ir_function *self)
 {
     size_t b;
 
@@ -561,6 +628,13 @@ bool ir_function_pass_peephole(ir_function *self)
                 if (!instr_is_operation(oper->opcode))
                     continue;
 
+                if (OPTS_FLAG(LEGACY_VECTOR_MATHS)) {
+                    if (oper->opcode == INSTR_MUL_VF && oper->_ops[2]->memberof == oper->_ops[1])
+                        continue;
+                    if (oper->opcode == INSTR_MUL_FV && oper->_ops[1]->memberof == oper->_ops[2])
+                        continue;
+                }
+
                 value = oper->_ops[0];
 
                 /* only do it for SSA values */
@@ -644,7 +718,7 @@ bool ir_function_pass_peephole(ir_function *self)
     return true;
 }
 
-bool ir_function_pass_tailrecursion(ir_function *self)
+static bool ir_function_pass_tailrecursion(ir_function *self)
 {
     size_t b, p;
 
@@ -733,6 +807,8 @@ bool ir_function_pass_tailrecursion(ir_function *self)
 
 bool ir_function_finalize(ir_function *self)
 {
+    size_t i;
+
     if (self->builtin)
         return true;
 
@@ -750,8 +826,31 @@ bool ir_function_finalize(ir_function *self)
         }
     }
 
-    if (!ir_function_naive_phi(self))
+    if (!ir_function_naive_phi(self)) {
+        irerror(self->context, "internal error: ir_function_naive_phi failed");
         return false;
+    }
+
+    for (i = 0; i < vec_size(self->locals); ++i) {
+        ir_value *v = self->locals[i];
+        if (v->vtype == TYPE_VECTOR ||
+            (v->vtype == TYPE_FIELD && v->outtype == TYPE_VECTOR))
+        {
+            ir_value_vector_member(v, 0);
+            ir_value_vector_member(v, 1);
+            ir_value_vector_member(v, 2);
+        }
+    }
+    for (i = 0; i < vec_size(self->values); ++i) {
+        ir_value *v = self->values[i];
+        if (v->vtype == TYPE_VECTOR ||
+            (v->vtype == TYPE_FIELD && v->outtype == TYPE_VECTOR))
+        {
+            ir_value_vector_member(v, 0);
+            ir_value_vector_member(v, 1);
+            ir_value_vector_member(v, 2);
+        }
+    }
 
     ir_function_enumerate(self);
 
@@ -774,6 +873,8 @@ ir_value* ir_function_create_local(ir_function *self, const char *name, int vtyp
     }
 
     ve = ir_value_var(name, (param ? store_param : store_local), vtype);
+    if (param)
+        ve->locked = true;
     vec_push(self->locals, ve);
     return ve;
 }
@@ -807,7 +908,6 @@ ir_block* ir_block_new(ir_function* owner, const char *name)
 
     self->eid = 0;
     self->is_return = false;
-    self->run_id = 0;
 
     self->living = NULL;
 
@@ -854,7 +954,7 @@ bool ir_block_set_label(ir_block *self, const char *name)
  *IR Instructions
  */
 
-ir_instr* ir_instr_new(lex_ctx ctx, ir_block* owner, int op)
+static ir_instr* ir_instr_new(lex_ctx ctx, ir_block* owner, int op)
 {
     ir_instr *self;
     self = (ir_instr*)mem_a(sizeof(*self));
@@ -886,7 +986,7 @@ static void ir_instr_delete_quick(ir_instr *self)
     mem_d(self);
 }
 
-void ir_instr_delete(ir_instr *self)
+static void ir_instr_delete(ir_instr *self)
 {
     size_t i;
     /* The following calls can only delete from
@@ -917,7 +1017,7 @@ void ir_instr_delete(ir_instr *self)
     mem_d(self);
 }
 
-bool ir_instr_op(ir_instr *self, int op, ir_value *v, bool writing)
+static bool ir_instr_op(ir_instr *self, int op, ir_value *v, bool writing)
 {
     if (self->_ops[op]) {
         size_t idx;
@@ -940,7 +1040,7 @@ bool ir_instr_op(ir_instr *self, int op, ir_value *v, bool writing)
  *IR Value
  */
 
-void ir_value_code_setaddr(ir_value *self, int32_t gaddr)
+static void ir_value_code_setaddr(ir_value *self, int32_t gaddr)
 {
     self->code.globaladdr = gaddr;
     if (self->members[0]) self->members[0]->code.globaladdr = gaddr;
@@ -948,7 +1048,7 @@ void ir_value_code_setaddr(ir_value *self, int32_t gaddr)
     if (self->members[2]) self->members[2]->code.globaladdr = gaddr;
 }
 
-int32_t ir_value_code_addr(const ir_value *self)
+static int32_t ir_value_code_addr(const ir_value *self)
 {
     if (self->store == store_return)
         return OFS_RETURN + self->code.addroffset;
@@ -963,6 +1063,7 @@ ir_value* ir_value_var(const char *name, int storetype, int vtype)
     self->fieldtype = TYPE_VOID;
     self->outtype = TYPE_VOID;
     self->store = storetype;
+    self->flags = 0;
 
     self->reads  = NULL;
     self->writes = NULL;
@@ -987,6 +1088,8 @@ ir_value* ir_value_var(const char *name, int storetype, int vtype)
     self->memberof = NULL;
 
     self->unique_life = false;
+    self->locked      = false;
+    self->callparam   = false;
 
     self->life = NULL;
     return self;
@@ -1058,7 +1161,7 @@ static GMQCC_INLINE size_t ir_value_sizeof(const ir_value *self)
     return type_sizeof_[self->vtype];
 }
 
-ir_value* ir_value_out(ir_function *owner, const char *name, int storetype, int vtype)
+static ir_value* ir_value_out(ir_function *owner, const char *name, int storetype, int vtype)
 {
     ir_value *v = ir_value_var(name, storetype, vtype);
     if (!v)
@@ -1131,22 +1234,11 @@ bool ir_value_set_field(ir_value *self, ir_value *fld)
     return true;
 }
 
-static char *ir_strdup(const char *str)
-{
-    if (str && !*str) {
-        /* actually dup empty strings */
-        char *out = (char*)mem_a(1);
-        *out = 0;
-        return out;
-    }
-    return util_strdup(str);
-}
-
 bool ir_value_set_string(ir_value *self, const char *str)
 {
     if (self->vtype != TYPE_STRING)
         return false;
-    self->constval.vstring = ir_strdup(str);
+    self->constval.vstring = util_strdupe(str);
     self->hasvalue = true;
     return true;
 }
@@ -1176,7 +1268,7 @@ bool ir_value_lives(ir_value *self, size_t at)
     return false;
 }
 
-bool ir_value_life_insert(ir_value *self, size_t idx, ir_life_entry_t e)
+static bool ir_value_life_insert(ir_value *self, size_t idx, ir_life_entry_t e)
 {
     size_t k;
     vec_push(self->life, e);
@@ -1186,15 +1278,16 @@ bool ir_value_life_insert(ir_value *self, size_t idx, ir_life_entry_t e)
     return true;
 }
 
-bool ir_value_life_merge(ir_value *self, size_t s)
+static bool ir_value_life_merge(ir_value *self, size_t s)
 {
     size_t i;
+    const size_t vs = vec_size(self->life);
     ir_life_entry_t *life = NULL;
     ir_life_entry_t *before = NULL;
     ir_life_entry_t new_entry;
 
     /* Find the first range >= s */
-    for (i = 0; i < vec_size(self->life); ++i)
+    for (i = 0; i < vs; ++i)
     {
         before = life;
         life = &self->life[i];
@@ -1202,7 +1295,7 @@ bool ir_value_life_merge(ir_value *self, size_t s)
             break;
     }
     /* nothing found? append */
-    if (i == vec_size(self->life)) {
+    if (i == vs) {
         ir_life_entry_t e;
         if (life && life->end+1 == s)
         {
@@ -1248,7 +1341,7 @@ bool ir_value_life_merge(ir_value *self, size_t s)
     return ir_value_life_insert(self, i, new_entry);
 }
 
-bool ir_value_life_merge_into(ir_value *self, const ir_value *other)
+static bool ir_value_life_merge_into(ir_value *self, const ir_value *other)
 {
     size_t i, myi;
 
@@ -1322,7 +1415,7 @@ bool ir_value_life_merge_into(ir_value *self, const ir_value *other)
     return true;
 }
 
-bool ir_values_overlap(const ir_value *a, const ir_value *b)
+static bool ir_values_overlap(const ir_value *a, const ir_value *b)
 {
     /* For any life entry in A see if it overlaps with
      * any life entry in B.
@@ -1418,7 +1511,7 @@ bool ir_block_create_store_op(ir_block *self, lex_ctx ctx, int op, ir_value *tar
     return true;
 }
 
-bool ir_block_create_store(ir_block *self, lex_ctx ctx, ir_value *target, ir_value *what)
+static bool ir_block_create_store(ir_block *self, lex_ctx ctx, ir_value *target, ir_value *what)
 {
     int op = 0;
     int vtype;
@@ -1575,7 +1668,7 @@ void ir_phi_add(ir_instr* self, ir_block *b, ir_value *v)
          * is doing something wrong.
          */
         irerror(self->context, "Invalid entry block for PHI");
-        abort();
+        exit(EXIT_FAILURE);
     }
 
     pe.value = v;
@@ -1707,14 +1800,33 @@ ir_value* ir_block_create_binop(ir_block *self, lex_ctx ctx,
             ot = TYPE_POINTER;
             break;
 #endif
+    /*
+     * after the following default case, the value of opcode can never
+     * be 1, 2, 3, 4, 5, 6, 7, 8, 9, 62, 63, 64, 65
+     */
         default:
             /* ranges: */
             /* boolean operations result in floats */
+            
+            /*
+             * opcode >= 10 takes true branch opcode is at least 10
+             * opcode <= 23 takes false branch opcode is at least 24
+             */
             if (opcode >= INSTR_EQ_F && opcode <= INSTR_GT)
                 ot = TYPE_FLOAT;
+                
+            /* 
+             * At condition "opcode <= 23", the value of "opcode" must be 
+             * at least 24.
+             * At condition "opcode <= 23", the value of "opcode" cannot be
+             * equal to any of {1, 2, 3, 4, 5, 6, 7, 8, 9, 62, 63, 64, 65}.
+             * The condition "opcode <= 23" cannot be true.
+             * 
+             * Thus ot=2 (TYPE_FLOAT) can never be true
+             */
+#if 0
             else if (opcode >= INSTR_LE && opcode <= INSTR_GT)
                 ot = TYPE_FLOAT;
-#if 0
             else if (opcode >= INSTR_LE_I && opcode <= INSTR_EQ_FI)
                 ot = TYPE_FLOAT;
 #endif
@@ -1761,7 +1873,7 @@ ir_value* ir_block_create_unary(ir_block *self, lex_ctx ctx,
     return ir_block_create_general_instr(self, ctx, label, opcode, operand, NULL, ot);
 }
 
-ir_value* ir_block_create_general_instr(ir_block *self, lex_ctx ctx, const char *label,
+static ir_value* ir_block_create_general_instr(ir_block *self, lex_ctx ctx, const char *label,
                                         int op, ir_value *a, ir_value *b, int outype)
 {
     ir_instr *instr;
@@ -1856,26 +1968,6 @@ bool ir_function_naive_phi(ir_function *self)
     return true;
 }
 
-#if 0
-static bool ir_naive_phi_emit_store(ir_block *block, size_t iid, ir_value *old, ir_value *what)
-{
-    ir_instr *instr;
-    size_t i;
-
-    /* create a store */
-    if (!ir_block_create_store(block, old, what))
-        return false;
-
-    /* we now move it up */
-    instr = vec_last(block->instr);
-    for (i = vec_size(block->instr)-1; i > iid; --i)
-        block->instr[i] = block->instr[i-1];
-    block->instr[i] = instr;
-
-    return true;
-}
-#endif
-
 static bool ir_block_naive_phi(ir_block *self)
 {
     size_t i, p; /*, w;*/
@@ -1918,58 +2010,6 @@ static bool ir_block_naive_phi(ir_block *self)
                 vec_push(b->instr, prevjump);
                 b->final = true;
             }
-
-#if 0
-            ir_value *v = instr->phi[p].value;
-            for (w = 0; w < vec_size(v->writes); ++w) {
-                ir_value *old;
-
-                if (!v->writes[w]->_ops[0])
-                    continue;
-
-                /* When the write was to a global, we have to emit a mov */
-                old = v->writes[w]->_ops[0];
-
-                /* The original instruction now writes to the PHI target local */
-                if (v->writes[w]->_ops[0] == v)
-                    v->writes[w]->_ops[0] = instr->_ops[0];
-
-                if (old->store != store_value && old->store != store_local && old->store != store_param)
-                {
-                    /* If it originally wrote to a global we need to store the value
-                     * there as welli
-                     */
-                    if (!ir_naive_phi_emit_store(self, i+1, old, v))
-                        return false;
-                    if (i+1 < vec_size(self->instr))
-                        instr = self->instr[i+1];
-                    else
-                        instr = NULL;
-                    /* In case I forget and access instr later, it'll be NULL
-                     * when it's a problem, to make sure we crash, rather than accessing
-                     * invalid data.
-                     */
-                }
-                else
-                {
-                    /* If it didn't, we can replace all reads by the phi target now. */
-                    size_t r;
-                    for (r = 0; r < vec_size(old->reads); ++r)
-                    {
-                        size_t op;
-                        ir_instr *ri = old->reads[r];
-                        for (op = 0; op < vec_size(ri->phi); ++op) {
-                            if (ri->phi[op].value == old)
-                                ri->phi[op].value = v;
-                        }
-                        for (op = 0; op < 3; ++op) {
-                            if (ri->_ops[op] == old)
-                                ri->_ops[op] = v;
-                        }
-                    }
-                }
-            }
-#endif
         }
         ir_instr_delete(instr);
     }
@@ -2006,71 +2046,20 @@ static void ir_block_enumerate(ir_block *self, size_t *_eid)
 void ir_function_enumerate(ir_function *self)
 {
     size_t i;
-    size_t instruction_id = 1;
+    size_t instruction_id = 0;
     for (i = 0; i < vec_size(self->blocks); ++i)
     {
+        /* each block now gets an additional "entry" instruction id
+         * we can use to avoid point-life issues
+         */
+        self->blocks[i]->entry_id = instruction_id;
+        ++instruction_id;
+
         self->blocks[i]->eid = i;
-        self->blocks[i]->run_id = 0;
         ir_block_enumerate(self->blocks[i], &instruction_id);
     }
 }
 
-static bool ir_block_life_propagate(ir_block *b, ir_block *prev, bool *changed);
-bool ir_function_calculate_liferanges(ir_function *self)
-{
-    size_t i;
-    bool changed;
-
-    /* parameters live at 0 */
-    for (i = 0; i < vec_size(self->params); ++i)
-        ir_value_life_merge(self->locals[i], 0);
-
-    do {
-        self->run_id++;
-        changed = false;
-        for (i = 0; i != vec_size(self->blocks); ++i)
-        {
-            if (self->blocks[i]->is_return)
-            {
-                vec_free(self->blocks[i]->living);
-                if (!ir_block_life_propagate(self->blocks[i], NULL, &changed))
-                    return false;
-            }
-        }
-    } while (changed);
-    if (vec_size(self->blocks)) {
-        ir_block *block = self->blocks[0];
-        for (i = 0; i < vec_size(block->living); ++i) {
-            ir_value *v = block->living[i];
-            if (v->store != store_local)
-                continue;
-            if ((v->members[0] && v->members[1] && v->members[2])) {
-                /* all vector members have been accessed - only treat this as uninitialized
-                 * if any of them is also uninitialized.
-                 */
-                if (!vec_ir_value_find(block->living, v->members[0], NULL) &&
-                    !vec_ir_value_find(block->living, v->members[1], NULL) &&
-                    !vec_ir_value_find(block->living, v->members[2], NULL))
-                {
-                    continue;
-                }
-            }
-            if (v->memberof) {
-                /* A member is only uninitialized if the whole vector is also uninitialized */
-                if (!vec_ir_value_find(block->living, v->memberof, NULL))
-                    continue;
-            }
-            self->flags |= IR_FLAG_HAS_UNINITIALIZED;
-            if (irwarning(v->context, WARN_USED_UNINITIALIZED,
-                          "variable `%s` may be used uninitialized in this function", v->name))
-            {
-                return false;
-            }
-        }
-    }
-    return true;
-}
-
 /* Local-value allocator
  * After finishing creating the liferange of all values used in a function
  * we can allocate their global-positions.
@@ -2083,11 +2072,13 @@ typedef struct {
     bool      *unique;
 } function_allocator;
 
-static bool function_allocator_alloc(function_allocator *alloc, const ir_value *var)
+static bool function_allocator_alloc(function_allocator *alloc, ir_value *var)
 {
     ir_value *slot;
     size_t vsize = ir_value_sizeof(var);
 
+    var->code.local = vec_size(alloc->locals);
+
     slot = ir_value_var("reg", store_global, var->vtype);
     if (!slot)
         return false;
@@ -2106,30 +2097,94 @@ localerror:
     return false;
 }
 
+static bool ir_function_allocator_assign(ir_function *self, function_allocator *alloc, ir_value *v)
+{
+    size_t a;
+    ir_value *slot;
+
+    if (v->unique_life)
+        return function_allocator_alloc(alloc, v);
+
+    for (a = 0; a < vec_size(alloc->locals); ++a)
+    {
+        /* if it's reserved for a unique liferange: skip */
+        if (alloc->unique[a])
+            continue;
+
+        slot = alloc->locals[a];
+
+        /* never resize parameters
+         * will be required later when overlapping temps + locals
+         */
+        if (a < vec_size(self->params) &&
+            alloc->sizes[a] < ir_value_sizeof(v))
+        {
+            continue;
+        }
+
+        if (ir_values_overlap(v, slot))
+            continue;
+
+        if (!ir_value_life_merge_into(slot, v))
+            return false;
+
+        /* adjust size for this slot */
+        if (alloc->sizes[a] < ir_value_sizeof(v))
+            alloc->sizes[a] = ir_value_sizeof(v);
+
+        v->code.local = a;
+        return true;
+    }
+    if (a >= vec_size(alloc->locals)) {
+        if (!function_allocator_alloc(alloc, v))
+            return false;
+    }
+    return true;
+}
+
 bool ir_function_allocate_locals(ir_function *self)
 {
-    size_t i, a;
+    size_t i;
     bool   retval = true;
     size_t pos;
+    bool   opt_gt = OPTS_OPTIMIZATION(OPTIM_GLOBAL_TEMPS);
 
-    ir_value *slot;
-    const ir_value *v;
+    ir_value *v;
 
-    function_allocator alloc;
+    function_allocator lockalloc, globalloc;
 
     if (!vec_size(self->locals) && !vec_size(self->values))
         return true;
 
-    alloc.locals    = NULL;
-    alloc.sizes     = NULL;
-    alloc.positions = NULL;
-    alloc.unique    = NULL;
+    globalloc.locals    = NULL;
+    globalloc.sizes     = NULL;
+    globalloc.positions = NULL;
+    globalloc.unique    = NULL;
+    lockalloc.locals    = NULL;
+    lockalloc.sizes     = NULL;
+    lockalloc.positions = NULL;
+    lockalloc.unique    = NULL;
 
     for (i = 0; i < vec_size(self->locals); ++i)
     {
-        if (!OPTS_OPTIMIZATION(OPTIM_LOCALTEMPS))
-            self->locals[i]->unique_life = true;
-        if (!function_allocator_alloc(&alloc, self->locals[i]))
+        v = self->locals[i];
+        if ((self->flags & IR_FLAG_MASK_NO_LOCAL_TEMPS) || !OPTS_OPTIMIZATION(OPTIM_LOCAL_TEMPS)) {
+            v->locked      = true;
+            v->unique_life = true;
+        }
+        else if (i >= vec_size(self->params))
+            break;
+        else
+            v->locked = true; /* lock parameters locals */
+        if (!function_allocator_alloc((v->locked || !opt_gt ? &lockalloc : &globalloc), v))
+            goto error;
+    }
+    for (; i < vec_size(self->locals); ++i)
+    {
+        v = self->locals[i];
+        if (!vec_size(v->life))
+            continue;
+        if (!ir_function_allocator_assign(self, (v->locked || !opt_gt ? &lockalloc : &globalloc), v))
             goto error;
     }
 
@@ -2141,69 +2196,100 @@ bool ir_function_allocate_locals(ir_function *self)
         if (!vec_size(v->life))
             continue;
 
-        for (a = 0; a < vec_size(alloc.locals); ++a)
-        {
-            /* if it's reserved for a unique liferange: skip */
-            if (alloc.unique[a])
-                continue;
-
-            slot = alloc.locals[a];
-
-            /* never resize parameters
-             * will be required later when overlapping temps + locals
-             */
-            if (a < vec_size(self->params) &&
-                alloc.sizes[a] < ir_value_sizeof(v))
+        /* CALL optimization:
+         * If the value is a parameter-temp: 1 write, 1 read from a CALL
+         * and it's not "locked", write it to the OFS_PARM directly.
+         */
+        if (OPTS_OPTIMIZATION(OPTIM_CALL_STORES) && !v->locked && !v->unique_life) {
+            if (vec_size(v->reads) == 1 && vec_size(v->writes) == 1 &&
+                (v->reads[0]->opcode == VINSTR_NRCALL ||
+                 (v->reads[0]->opcode >= INSTR_CALL0 && v->reads[0]->opcode <= INSTR_CALL8)
+                )
+               )
             {
+                size_t    param;
+                ir_instr *call = v->reads[0];
+                if (!vec_ir_value_find(call->params, v, &param)) {
+                    irerror(call->context, "internal error: unlocked parameter %s not found", v->name);
+                    goto error;
+                }
+                ++opts_optimizationcount[OPTIM_CALL_STORES];
+                v->callparam = true;
+                if (param < 8)
+                    ir_value_code_setaddr(v, OFS_PARM0 + 3*param);
+                else {
+                    size_t nprotos = vec_size(self->owner->extparam_protos);
+                    ir_value *ep;
+                    param -= 8;
+                    if (nprotos > param)
+                        ep = self->owner->extparam_protos[param];
+                    else
+                    {
+                        ep = ir_gen_extparam_proto(self->owner);
+                        while (++nprotos <= param)
+                            ep = ir_gen_extparam_proto(self->owner);
+                    }
+                    ir_instr_op(v->writes[0], 0, ep, true);
+                    call->params[param+8] = ep;
+                }
                 continue;
             }
-
-            if (ir_values_overlap(v, slot))
+            if (vec_size(v->writes) == 1 && v->writes[0]->opcode == INSTR_CALL0)
+            {
+                v->store = store_return;
+                if (v->members[0]) v->members[0]->store = store_return;
+                if (v->members[1]) v->members[1]->store = store_return;
+                if (v->members[2]) v->members[2]->store = store_return;
+                ++opts_optimizationcount[OPTIM_CALL_STORES];
                 continue;
-
-            if (!ir_value_life_merge_into(slot, v))
-                goto error;
-
-            /* adjust size for this slot */
-            if (alloc.sizes[a] < ir_value_sizeof(v))
-                alloc.sizes[a] = ir_value_sizeof(v);
-
-            self->values[i]->code.local = a;
-            break;
-        }
-        if (a >= vec_size(alloc.locals)) {
-            self->values[i]->code.local = vec_size(alloc.locals);
-            if (!function_allocator_alloc(&alloc, v))
-                goto error;
+            }
         }
+
+        if (!ir_function_allocator_assign(self, (v->locked || !opt_gt ? &lockalloc : &globalloc), v))
+            goto error;
     }
 
-    if (!alloc.sizes) {
+    if (!lockalloc.sizes && !globalloc.sizes) {
         goto cleanup;
     }
+    vec_push(lockalloc.positions, 0);
+    vec_push(globalloc.positions, 0);
 
     /* Adjust slot positions based on sizes */
-    vec_push(alloc.positions, 0);
-
-    if (vec_size(alloc.sizes))
-        pos = alloc.positions[0] + alloc.sizes[0];
-    else
-        pos = 0;
-    for (i = 1; i < vec_size(alloc.sizes); ++i)
-    {
-        pos = alloc.positions[i-1] + alloc.sizes[i-1];
-        vec_push(alloc.positions, pos);
+    if (lockalloc.sizes) {
+        pos = (vec_size(lockalloc.sizes) ? lockalloc.positions[0] : 0);
+        for (i = 1; i < vec_size(lockalloc.sizes); ++i)
+        {
+            pos = lockalloc.positions[i-1] + lockalloc.sizes[i-1];
+            vec_push(lockalloc.positions, pos);
+        }
+        self->allocated_locals = pos + vec_last(lockalloc.sizes);
+    }
+    if (globalloc.sizes) {
+        pos = (vec_size(globalloc.sizes) ? globalloc.positions[0] : 0);
+        for (i = 1; i < vec_size(globalloc.sizes); ++i)
+        {
+            pos = globalloc.positions[i-1] + globalloc.sizes[i-1];
+            vec_push(globalloc.positions, pos);
+        }
+        self->globaltemps = pos + vec_last(globalloc.sizes);
     }
-
-    self->allocated_locals = pos + vec_last(alloc.sizes);
 
     /* Locals need to know their new position */
     for (i = 0; i < vec_size(self->locals); ++i) {
-        self->locals[i]->code.local = alloc.positions[i];
+        v = self->locals[i];
+        if (v->locked || !opt_gt)
+            v->code.local = lockalloc.positions[v->code.local];
+        else
+            v->code.local = globalloc.positions[v->code.local];
     }
     /* Take over the actual slot positions on values */
     for (i = 0; i < vec_size(self->values); ++i) {
-        self->values[i]->code.local = alloc.positions[self->values[i]->code.local];
+        v = self->values[i];
+        if (v->locked || !opt_gt)
+            v->code.local = lockalloc.positions[v->code.local];
+        else
+            v->code.local = globalloc.positions[v->code.local];
     }
 
     goto cleanup;
@@ -2211,12 +2297,18 @@ bool ir_function_allocate_locals(ir_function *self)
 error:
     retval = false;
 cleanup:
-    for (i = 0; i < vec_size(alloc.locals); ++i)
-        ir_value_delete(alloc.locals[i]);
-    vec_free(alloc.unique);
-    vec_free(alloc.locals);
-    vec_free(alloc.sizes);
-    vec_free(alloc.positions);
+    for (i = 0; i < vec_size(lockalloc.locals); ++i)
+        ir_value_delete(lockalloc.locals[i]);
+    for (i = 0; i < vec_size(globalloc.locals); ++i)
+        ir_value_delete(globalloc.locals[i]);
+    vec_free(globalloc.unique);
+    vec_free(globalloc.locals);
+    vec_free(globalloc.sizes);
+    vec_free(globalloc.positions);
+    vec_free(lockalloc.unique);
+    vec_free(lockalloc.locals);
+    vec_free(lockalloc.sizes);
+    vec_free(lockalloc.positions);
     return retval;
 }
 
@@ -2261,71 +2353,53 @@ static void ir_op_read_write(int op, size_t *read, size_t *write)
 
 static bool ir_block_living_add_instr(ir_block *self, size_t eid)
 {
-    size_t i;
-    bool changed = false;
-    bool tempbool;
-    for (i = 0; i != vec_size(self->living); ++i)
+    size_t       i;
+    const size_t vs = vec_size(self->living);
+    bool         changed = false;
+    for (i = 0; i != vs; ++i)
     {
-        tempbool = ir_value_life_merge(self->living[i], eid);
-        /* debug
-        if (tempbool)
-            irerror(self->context, "block_living_add_instr() value instruction added %s: %i", self->living[i]->_name, (int)eid);
-        */
-        changed = changed || tempbool;
+        if (ir_value_life_merge(self->living[i], eid))
+            changed = true;
     }
     return changed;
 }
 
-static bool ir_block_life_prop_previous(ir_block* self, ir_block *prev, bool *changed)
+static bool ir_block_living_lock(ir_block *self)
 {
     size_t i;
-
-    (void)changed;
-
-    /* values which have been read in a previous iteration are now
-     * in the "living" array even if the previous block doesn't use them.
-     * So we have to remove whatever does not exist in the previous block.
-     * They will be re-added on-read, but the liferange merge won't cause
-     * a change.
-    for (i = 0; i < vec_size(self->living); ++i)
+    bool changed = false;
+    for (i = 0; i != vec_size(self->living); ++i)
     {
-        if (!vec_ir_value_find(prev->living, self->living[i], NULL)) {
-            vec_remove(self->living, i, 1);
-            --i;
+        if (!self->living[i]->locked) {
+            self->living[i]->locked = true;
+            changed = true;
         }
     }
-     */
-
-    /* Whatever the previous block still has in its living set
-     * must now be added to ours as well.
-     */
-    for (i = 0; i < vec_size(prev->living); ++i)
-    {
-        if (vec_ir_value_find(self->living, prev->living[i], NULL))
-            continue;
-        vec_push(self->living, prev->living[i]);
-        /*
-        irerror(self->contextt from prev: %s", self->label, prev->living[i]->_name);
-        */
-    }
-    return true;
+    return changed;
 }
 
-static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *changed)
+static bool ir_block_life_propagate(ir_block *self, bool *changed)
 {
     ir_instr *instr;
     ir_value *value;
-    bool  tempbool;
-    size_t i, o, p;
+    size_t i, o, p, mem, cnt;
     /* bitmasks which operands are read from or written to */
     size_t read, write;
-    char dbg_ind[16] = { '#', '0' };
+    char dbg_ind[16];
+    dbg_ind[0] = '#';
+    dbg_ind[1] = '0';
     (void)dbg_ind;
 
-    if (prev)
-    {
-        if (!ir_block_life_prop_previous(self, prev, changed))
-            return false;
+    vec_free(self->living);
+
+    p = vec_size(self->exits);
+    for (i = 0; i < p; ++i) {
+        ir_block *prev = self->exits[i];
+        cnt = vec_size(prev->living);
+        for (o = 0; o < cnt; ++o) {
+            if (!vec_ir_value_find(self->living, prev->living[o], NULL))
+                vec_push(self->living, prev->living[o]);
+        }
     }
 
     i = vec_size(self->instr);
@@ -2336,19 +2410,6 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change
         /* See which operands are read and write operands */
         ir_op_read_write(instr->opcode, &read, &write);
 
-        if (instr->opcode == INSTR_MUL_VF)
-        {
-            /* the float source will get an additional lifetime */
-            tempbool = ir_value_life_merge(instr->_ops[2], instr->eid+1);
-            *changed = *changed || tempbool;
-        }
-        else if (instr->opcode == INSTR_MUL_FV)
-        {
-            /* the float source will get an additional lifetime */
-            tempbool = ir_value_life_merge(instr->_ops[1], instr->eid+1);
-            *changed = *changed || tempbool;
-        }
-
         /* Go through the 3 main operands
          * writes first, then reads
          */
@@ -2385,27 +2446,62 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change
                      * and make sure it's only printed once
                      * since this function is run multiple times.
                      */
-                    /* For now: debug info: */
                     /* con_err( "Value only written %s\n", value->name); */
-                    tempbool = ir_value_life_merge(value, instr->eid);
-                    *changed = *changed || tempbool;
-                    /*
-                    ir_instr_dump(instr, dbg_ind, printf);
-                    abort();
-                    */
+                    if (ir_value_life_merge(value, instr->eid))
+                        *changed = true;
                 } else {
                     /* since 'living' won't contain it
                      * anymore, merge the value, since
                      * (A) doesn't.
                      */
-                    tempbool = ir_value_life_merge(value, instr->eid);
-                    *changed = *changed || tempbool;
+                    if (ir_value_life_merge(value, instr->eid))
+                        *changed = true;
                     /* Then remove */
                     vec_remove(self->living, idx, 1);
                 }
+                /* Removing a vector removes all members */
+                for (mem = 0; mem < 3; ++mem) {
+                    if (value->members[mem] && vec_ir_value_find(self->living, value->members[mem], &idx)) {
+                        if (ir_value_life_merge(value->members[mem], instr->eid))
+                            *changed = true;
+                        vec_remove(self->living, idx, 1);
+                    }
+                }
+                /* Removing the last member removes the vector */
+                if (value->memberof) {
+                    value = value->memberof;
+                    for (mem = 0; mem < 3; ++mem) {
+                        if (value->members[mem] && vec_ir_value_find(self->living, value->members[mem], NULL))
+                            break;
+                    }
+                    if (mem == 3 && vec_ir_value_find(self->living, value, &idx)) {
+                        if (ir_value_life_merge(value, instr->eid))
+                            *changed = true;
+                        vec_remove(self->living, idx, 1);
+                    }
+                }
             }
         }
 
+        if (instr->opcode == INSTR_MUL_VF)
+        {
+            value = instr->_ops[2];
+            /* the float source will get an additional lifetime */
+            if (ir_value_life_merge(value, instr->eid+1))
+                *changed = true;
+            if (value->memberof && ir_value_life_merge(value->memberof, instr->eid+1))
+                *changed = true;
+        }
+        else if (instr->opcode == INSTR_MUL_FV || instr->opcode == INSTR_LOAD_V)
+        {
+            value = instr->_ops[1];
+            /* the float source will get an additional lifetime */
+            if (ir_value_life_merge(value, instr->eid+1))
+                *changed = true;
+            if (value->memberof && ir_value_life_merge(value->memberof, instr->eid+1))
+                *changed = true;
+        }
+
         for (o = 0; o < 3; ++o)
         {
             if (!instr->_ops[o]) /* no such operand */
@@ -2426,6 +2522,13 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change
             {
                 if (!vec_ir_value_find(self->living, value, NULL))
                     vec_push(self->living, value);
+                /* reading adds the full vector */
+                if (value->memberof && !vec_ir_value_find(self->living, value->memberof, NULL))
+                    vec_push(self->living, value->memberof);
+                for (mem = 0; mem < 3; ++mem) {
+                    if (value->members[mem] && !vec_ir_value_find(self->living, value->members[mem], NULL))
+                        vec_push(self->living, value->members[mem]);
+                }
             }
         }
         /* PHI operands are always read operands */
@@ -2434,34 +2537,117 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change
             value = instr->phi[p].value;
             if (!vec_ir_value_find(self->living, value, NULL))
                 vec_push(self->living, value);
+            /* reading adds the full vector */
+            if (value->memberof && !vec_ir_value_find(self->living, value->memberof, NULL))
+                vec_push(self->living, value->memberof);
+            for (mem = 0; mem < 3; ++mem) {
+                if (value->members[mem] && !vec_ir_value_find(self->living, value->members[mem], NULL))
+                    vec_push(self->living, value->members[mem]);
+            }
         }
 
+        /* on a call, all these values must be "locked" */
+        if (instr->opcode >= INSTR_CALL0 && instr->opcode <= INSTR_CALL8) {
+            if (ir_block_living_lock(self))
+                *changed = true;
+        }
         /* call params are read operands too */
         for (p = 0; p < vec_size(instr->params); ++p)
         {
             value = instr->params[p];
             if (!vec_ir_value_find(self->living, value, NULL))
                 vec_push(self->living, value);
+            /* reading adds the full vector */
+            if (value->memberof && !vec_ir_value_find(self->living, value->memberof, NULL))
+                vec_push(self->living, value->memberof);
+            for (mem = 0; mem < 3; ++mem) {
+                if (value->members[mem] && !vec_ir_value_find(self->living, value->members[mem], NULL))
+                    vec_push(self->living, value->members[mem]);
+            }
         }
 
         /* (A) */
-        tempbool = ir_block_living_add_instr(self, instr->eid);
-        /*con_err( "living added values\n");*/
-        *changed = *changed || tempbool;
-
+        if (ir_block_living_add_instr(self, instr->eid))
+            *changed = true;
     }
+    /* the "entry" instruction ID */
+    if (ir_block_living_add_instr(self, self->entry_id))
+        *changed = true;
 
-    if (self->run_id == self->owner->run_id)
-        return true;
+    return true;
+}
 
-    self->run_id = self->owner->run_id;
+bool ir_function_calculate_liferanges(ir_function *self)
+{
+    size_t i, s;
+    bool changed;
 
-    for (i = 0; i < vec_size(self->entries); ++i)
-    {
-        ir_block *entry = self->entries[i];
-        ir_block_life_propagate(entry, self, changed);
-    }
+    /* parameters live at 0 */
+    for (i = 0; i < vec_size(self->params); ++i)
+        if (!ir_value_life_merge(self->locals[i], 0))
+            compile_error(self->context, "internal error: failed value-life merging");
 
+    do {
+        self->run_id++;
+        changed = false;
+        i = vec_size(self->blocks);
+        while (i--) {
+            ir_block_life_propagate(self->blocks[i], &changed);
+        }
+    } while (changed);
+
+    if (vec_size(self->blocks)) {
+        ir_block *block = self->blocks[0];
+        for (i = 0; i < vec_size(block->living); ++i) {
+            ir_value *v = block->living[i];
+            if (v->store != store_local)
+                continue;
+            if (v->vtype == TYPE_VECTOR)
+                continue;
+            self->flags |= IR_FLAG_HAS_UNINITIALIZED;
+            /* find the instruction reading from it */
+            for (s = 0; s < vec_size(v->reads); ++s) {
+                if (v->reads[s]->eid == v->life[0].end)
+                    break;
+            }
+            if (s < vec_size(v->reads)) {
+                if (irwarning(v->context, WARN_USED_UNINITIALIZED,
+                              "variable `%s` may be used uninitialized in this function\n"
+                              " -> %s:%i",
+                              v->name,
+                              v->reads[s]->context.file, v->reads[s]->context.line)
+                   )
+                {
+                    return false;
+                }
+                continue;
+            }
+            if (v->memberof) {
+                ir_value *vec = v->memberof;
+                for (s = 0; s < vec_size(vec->reads); ++s) {
+                    if (vec->reads[s]->eid == v->life[0].end)
+                        break;
+                }
+                if (s < vec_size(vec->reads)) {
+                    if (irwarning(v->context, WARN_USED_UNINITIALIZED,
+                                  "variable `%s` may be used uninitialized in this function\n"
+                                  " -> %s:%i",
+                                  v->name,
+                                  vec->reads[s]->context.file, vec->reads[s]->context.line)
+                       )
+                    {
+                        return false;
+                    }
+                    continue;
+                }
+            }
+            if (irwarning(v->context, WARN_USED_UNINITIALIZED,
+                          "variable `%s` may be used uninitialized in this function", v->name))
+            {
+                return false;
+            }
+        }
+    }
     return true;
 }
 
@@ -2480,9 +2666,9 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change
  *
  * Breaking conventions is annoying...
  */
-static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool islocal, bool defs_only);
+static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool islocal);
 
-static bool gen_global_field(ir_value *global)
+static bool gen_global_field(code_t *code, ir_value *global)
 {
     if (global->hasvalue)
     {
@@ -2493,20 +2679,20 @@ static bool gen_global_field(ir_value *global)
         }
 
         /* copy the field's value */
-        ir_value_code_setaddr(global, vec_size(code_globals));
-        vec_push(code_globals, fld->code.fieldaddr);
+        ir_value_code_setaddr(global, vec_size(code->globals));
+        vec_push(code->globals, fld->code.fieldaddr);
         if (global->fieldtype == TYPE_VECTOR) {
-            vec_push(code_globals, fld->code.fieldaddr+1);
-            vec_push(code_globals, fld->code.fieldaddr+2);
+            vec_push(code->globals, fld->code.fieldaddr+1);
+            vec_push(code->globals, fld->code.fieldaddr+2);
         }
     }
     else
     {
-        ir_value_code_setaddr(global, vec_size(code_globals));
-        vec_push(code_globals, 0);
+        ir_value_code_setaddr(global, vec_size(code->globals));
+        vec_push(code->globals, 0);
         if (global->fieldtype == TYPE_VECTOR) {
-            vec_push(code_globals, 0);
-            vec_push(code_globals, 0);
+            vec_push(code->globals, 0);
+            vec_push(code->globals, 0);
         }
     }
     if (global->code.globaladdr < 0)
@@ -2514,7 +2700,7 @@ static bool gen_global_field(ir_value *global)
     return true;
 }
 
-static bool gen_global_pointer(ir_value *global)
+static bool gen_global_pointer(code_t *code, ir_value *global)
 {
     if (global->hasvalue)
     {
@@ -2540,20 +2726,20 @@ static bool gen_global_pointer(ir_value *global)
             return false;
         }
 
-        ir_value_code_setaddr(global, vec_size(code_globals));
-        vec_push(code_globals, target->code.globaladdr);
+        ir_value_code_setaddr(global, vec_size(code->globals));
+        vec_push(code->globals, target->code.globaladdr);
     }
     else
     {
-        ir_value_code_setaddr(global, vec_size(code_globals));
-        vec_push(code_globals, 0);
+        ir_value_code_setaddr(global, vec_size(code->globals));
+        vec_push(code->globals, 0);
     }
     if (global->code.globaladdr < 0)
         return false;
     return true;
 }
 
-static bool gen_blocks_recursive(ir_function *func, ir_block *block)
+static bool gen_blocks_recursive(code_t *code, ir_function *func, ir_block *block)
 {
     prog_section_statement stmt;
     ir_instr *instr;
@@ -2563,9 +2749,8 @@ static bool gen_blocks_recursive(ir_function *func, ir_block *block)
     size_t    stidx;
     size_t    i;
 
-tailcall:
     block->generated = true;
-    block->code_start = vec_size(code_statements);
+    block->code_start = vec_size(code->statements);
     for (i = 0; i < vec_size(block->instr); ++i)
     {
         instr = block->instr[i];
@@ -2580,18 +2765,16 @@ tailcall:
             /* for uncoditional jumps, if the target hasn't been generated
              * yet, we generate them right here.
              */
-            if (!target->generated) {
-                block = target;
-                goto tailcall;
-            }
+            if (!target->generated)
+                return gen_blocks_recursive(code, func, target);
 
             /* otherwise we generate a jump instruction */
             stmt.opcode = INSTR_GOTO;
-            stmt.o1.s1 = (target->code_start) - vec_size(code_statements);
+            stmt.o1.s1 = (target->code_start) - vec_size(code->statements);
             stmt.o2.s1 = 0;
             stmt.o3.s1 = 0;
             if (stmt.o1.s1 != 1)
-                code_push_statement(&stmt, instr->context.line);
+                code_push_statement(code, &stmt, instr->context.line);
 
             /* no further instructions can be in this block */
             return true;
@@ -2610,27 +2793,23 @@ tailcall:
 
             if (ontrue->generated) {
                 stmt.opcode = INSTR_IF;
-                stmt.o2.s1 = (ontrue->code_start) - vec_size(code_statements);
+                stmt.o2.s1 = (ontrue->code_start) - vec_size(code->statements);
                 if (stmt.o2.s1 != 1)
-                    code_push_statement(&stmt, instr->context.line);
+                    code_push_statement(code, &stmt, instr->context.line);
             }
             if (onfalse->generated) {
                 stmt.opcode = INSTR_IFNOT;
-                stmt.o2.s1 = (onfalse->code_start) - vec_size(code_statements);
+                stmt.o2.s1 = (onfalse->code_start) - vec_size(code->statements);
                 if (stmt.o2.s1 != 1)
-                    code_push_statement(&stmt, instr->context.line);
+                    code_push_statement(code, &stmt, instr->context.line);
             }
             if (!ontrue->generated) {
-                if (onfalse->generated) {
-                    block = ontrue;
-                    goto tailcall;
-                }
+                if (onfalse->generated)
+                    return gen_blocks_recursive(code, func, ontrue);
             }
             if (!onfalse->generated) {
-                if (ontrue->generated) {
-                    block = onfalse;
-                    goto tailcall;
-                }
+                if (ontrue->generated)
+                    return gen_blocks_recursive(code, func, onfalse);
             }
             /* neither ontrue nor onfalse exist */
             stmt.opcode = INSTR_IFNOT;
@@ -2641,24 +2820,24 @@ tailcall:
                 onfalse = ontrue;
                 ontrue = tmp;
             }
-            stidx = vec_size(code_statements);
-            code_push_statement(&stmt, instr->context.line);
+            stidx = vec_size(code->statements);
+            code_push_statement(code, &stmt, instr->context.line);
             /* on false we jump, so add ontrue-path */
-            if (!gen_blocks_recursive(func, ontrue))
+            if (!gen_blocks_recursive(code, func, ontrue))
                 return false;
             /* fixup the jump address */
-            code_statements[stidx].o2.s1 = vec_size(code_statements) - stidx;
+            code->statements[stidx].o2.s1 = vec_size(code->statements) - stidx;
             /* generate onfalse path */
             if (onfalse->generated) {
                 /* fixup the jump address */
-                code_statements[stidx].o2.s1 = (onfalse->code_start) - (stidx);
-                if (code_statements[stidx].o2.s1 == 1) {
-                    code_statements[stidx] = code_statements[stidx+1];
-                    if (code_statements[stidx].o1.s1 < 0)
-                        code_statements[stidx].o1.s1++;
-                    code_pop_statement();
+                code->statements[stidx].o2.s1 = (onfalse->code_start) - (stidx);
+                if (stidx+2 == vec_size(code->statements) && code->statements[stidx].o2.s1 == 1) {
+                    code->statements[stidx] = code->statements[stidx+1];
+                    if (code->statements[stidx].o1.s1 < 0)
+                        code->statements[stidx].o1.s1++;
+                    code_pop_statement(code);
                 }
-                stmt.opcode = vec_last(code_statements).opcode;
+                stmt.opcode = vec_last(code->statements).opcode;
                 if (stmt.opcode == INSTR_GOTO ||
                     stmt.opcode == INSTR_IF ||
                     stmt.opcode == INSTR_IFNOT ||
@@ -2670,40 +2849,26 @@ tailcall:
                 }
                 /* may have been generated in the previous recursive call */
                 stmt.opcode = INSTR_GOTO;
-                stmt.o1.s1 = (onfalse->code_start) - vec_size(code_statements);
+                stmt.o1.s1 = (onfalse->code_start) - vec_size(code->statements);
                 stmt.o2.s1 = 0;
                 stmt.o3.s1 = 0;
                 if (stmt.o1.s1 != 1)
-                    code_push_statement(&stmt, instr->context.line);
+                    code_push_statement(code, &stmt, instr->context.line);
                 return true;
             }
-            else if (code_statements[stidx].o2.s1 == 1) {
-                code_statements[stidx] = code_statements[stidx+1];
-                if (code_statements[stidx].o1.s1 < 0)
-                    code_statements[stidx].o1.s1++;
-                code_pop_statement();
+            else if (stidx+2 == vec_size(code->statements) && code->statements[stidx].o2.s1 == 1) {
+                code->statements[stidx] = code->statements[stidx+1];
+                if (code->statements[stidx].o1.s1 < 0)
+                    code->statements[stidx].o1.s1++;
+                code_pop_statement(code);
             }
             /* if not, generate now */
-            block = onfalse;
-            goto tailcall;
+            return gen_blocks_recursive(code, func, onfalse);
         }
 
         if ( (instr->opcode >= INSTR_CALL0 && instr->opcode <= INSTR_CALL8)
            || instr->opcode == VINSTR_NRCALL)
         {
-            /* Trivial call translation:
-             * copy all params to OFS_PARM*
-             * if the output's storetype is not store_return,
-             * add append a STORE instruction!
-             *
-             * NOTES on how to do it better without much trouble:
-             * -) The liferanges!
-             *      Simply check the liferange of all parameters for
-             *      other CALLs. For each param with no CALL in its
-             *      liferange, we can store it in an OFS_PARM at
-             *      generation already. This would even include later
-             *      reuse.... probably... :)
-             */
             size_t p, first;
             ir_value *retvalue;
 
@@ -2713,17 +2878,21 @@ tailcall:
             for (p = 0; p < first; ++p)
             {
                 ir_value *param = instr->params[p];
+                if (param->callparam)
+                    continue;
 
                 stmt.opcode = INSTR_STORE_F;
                 stmt.o3.u1 = 0;
 
                 if (param->vtype == TYPE_FIELD)
                     stmt.opcode = field_store_instr[param->fieldtype];
+                else if (param->vtype == TYPE_NIL)
+                    stmt.opcode = INSTR_STORE_V;
                 else
                     stmt.opcode = type_store_instr[param->vtype];
                 stmt.o1.u1 = ir_value_code_addr(param);
                 stmt.o2.u1 = OFS_PARM0 + 3 * p;
-                code_push_statement(&stmt, instr->context.line);
+                code_push_statement(code, &stmt, instr->context.line);
             }
             /* Now handle extparams */
             first = vec_size(instr->params);
@@ -2733,6 +2902,9 @@ tailcall:
                 ir_value *param = instr->params[p];
                 ir_value *targetparam;
 
+                if (param->callparam)
+                    continue;
+
                 if (p-8 >= vec_size(ir->extparams))
                     ir_gen_extparam(ir);
 
@@ -2743,11 +2915,13 @@ tailcall:
 
                 if (param->vtype == TYPE_FIELD)
                     stmt.opcode = field_store_instr[param->fieldtype];
+                else if (param->vtype == TYPE_NIL)
+                    stmt.opcode = INSTR_STORE_V;
                 else
                     stmt.opcode = type_store_instr[param->vtype];
                 stmt.o1.u1 = ir_value_code_addr(param);
                 stmt.o2.u1 = ir_value_code_addr(targetparam);
-                code_push_statement(&stmt, instr->context.line);
+                code_push_statement(code, &stmt, instr->context.line);
             }
 
             stmt.opcode = INSTR_CALL0 + vec_size(instr->params);
@@ -2756,12 +2930,11 @@ tailcall:
             stmt.o1.u1 = ir_value_code_addr(instr->_ops[1]);
             stmt.o2.u1 = 0;
             stmt.o3.u1 = 0;
-            code_push_statement(&stmt, instr->context.line);
+            code_push_statement(code, &stmt, instr->context.line);
 
             retvalue = instr->_ops[0];
             if (retvalue && retvalue->store != store_return &&
-                (retvalue->store == store_global || (vec_size(retvalue->life) && vec_size(retvalue->reads)))
-               )
+                (retvalue->store == store_global || vec_size(retvalue->life)))
             {
                 /* not to be kept in OFS_RETURN */
                 if (retvalue->vtype == TYPE_FIELD && OPTS_FLAG(ADJUST_VECTOR_FIELDS))
@@ -2771,7 +2944,7 @@ tailcall:
                 stmt.o1.u1 = OFS_RETURN;
                 stmt.o2.u1 = ir_value_code_addr(retvalue);
                 stmt.o3.u1 = 0;
-                code_push_statement(&stmt, instr->context.line);
+                code_push_statement(code, &stmt, instr->context.line);
             }
             continue;
         }
@@ -2821,15 +2994,15 @@ tailcall:
             }
         }
 
-        code_push_statement(&stmt, instr->context.line);
+        code_push_statement(code, &stmt, instr->context.line);
     }
     return true;
 }
 
-static bool gen_function_code(ir_function *self)
+static bool gen_function_code(code_t *code, ir_function *self)
 {
     ir_block *block;
-    prog_section_statement stmt;
+    prog_section_statement stmt, *retst;
 
     /* Starting from entry point, we generate blocks "as they come"
      * for now. Dead blocks will not be translated obviously.
@@ -2843,17 +3016,27 @@ static bool gen_function_code(ir_function *self)
     if (block->generated)
         return true;
 
-    if (!gen_blocks_recursive(self, block)) {
+    if (!gen_blocks_recursive(code, self, block)) {
         irerror(self->context, "failed to generate blocks for '%s'", self->name);
         return false;
     }
 
     /* code_write and qcvm -disasm need to know that the function ends here */
-    stmt.opcode = INSTR_DONE;
-    stmt.o1.u1 = 0;
-    stmt.o2.u1 = 0;
-    stmt.o3.u1 = 0;
-    code_push_statement(&stmt, vec_last(code_linenums));
+    retst = &vec_last(code->statements);
+    if (OPTS_OPTIMIZATION(OPTIM_VOID_RETURN) &&
+        self->outtype == TYPE_VOID &&
+        retst->opcode == INSTR_RETURN &&
+        !retst->o1.u1 && !retst->o2.u1 && !retst->o3.u1)
+    {
+        retst->opcode = INSTR_DONE;
+        ++opts_optimizationcount[OPTIM_VOID_RETURN];
+    } else {
+        stmt.opcode = INSTR_DONE;
+        stmt.o1.u1 = 0;
+        stmt.o2.u1 = 0;
+        stmt.o3.u1 = 0;
+        code_push_statement(code, &stmt, vec_last(code->linenums));
+    }
     return true;
 }
 
@@ -2870,7 +3053,7 @@ static qcint ir_builder_filestring(ir_builder *ir, const char *filename)
             return ir->filestrings[i];
     }
 
-    str = code_genstring(filename);
+    str = code_genstring(ir->code, filename);
     vec_push(ir->filenames, filename);
     vec_push(ir->filestrings, str);
     return str;
@@ -2911,37 +3094,52 @@ static bool gen_global_function(ir_builder *ir, ir_value *global)
     if (irfun->builtin)
         fun.entry = irfun->builtin+1;
     else {
-        irfun->code_function_def = vec_size(code_functions);
-        fun.entry = vec_size(code_statements);
+        irfun->code_function_def = vec_size(ir->code->functions);
+        fun.entry                = vec_size(ir->code->statements);
     }
 
-    vec_push(code_functions, fun);
+    vec_push(ir->code->functions, fun);
     return true;
 }
 
+static ir_value* ir_gen_extparam_proto(ir_builder *ir)
+{
+    ir_value *global;
+    char      name[128];
+
+    util_snprintf(name, sizeof(name), "EXTPARM#%i", (int)(vec_size(ir->extparam_protos)));
+    global = ir_value_var(name, store_global, TYPE_VECTOR);
+
+    vec_push(ir->extparam_protos, global);
+    return global;
+}
+
 static void ir_gen_extparam(ir_builder *ir)
 {
     prog_section_def def;
     ir_value        *global;
-    char             name[128];
 
-    snprintf(name, sizeof(name), "EXTPARM#%i", (int)(vec_size(ir->extparams)+8));
-    global = ir_value_var(name, store_global, TYPE_VECTOR);
+    if (vec_size(ir->extparam_protos) < vec_size(ir->extparams)+1)
+        global = ir_gen_extparam_proto(ir);
+    else
+        global = ir->extparam_protos[vec_size(ir->extparams)];
+
+    def.name   = code_genstring(ir->code, global->name);
+    def.type   = TYPE_VECTOR;
+    def.offset = vec_size(ir->code->globals);
 
-    def.name = code_genstring(name);
-    def.type = TYPE_VECTOR;
-    def.offset = vec_size(code_globals);
+    vec_push(ir->code->defs, def);
 
-    vec_push(code_defs, def);
     ir_value_code_setaddr(global, def.offset);
-    vec_push(code_globals, 0);
-    vec_push(code_globals, 0);
-    vec_push(code_globals, 0);
+
+    vec_push(ir->code->globals, 0);
+    vec_push(ir->code->globals, 0);
+    vec_push(ir->code->globals, 0);
 
     vec_push(ir->extparams, global);
 }
 
-static bool gen_function_extparam_copy(ir_function *self)
+static bool gen_function_extparam_copy(code_t *code, ir_function *self)
 {
     size_t i, ext, numparams;
 
@@ -2970,7 +3168,43 @@ static bool gen_function_extparam_copy(ir_function *self)
         }
         stmt.o1.u1 = ir_value_code_addr(ep);
         stmt.o2.u1 = ir_value_code_addr(self->locals[i]);
-        code_push_statement(&stmt, self->context.line);
+        code_push_statement(code, &stmt, self->context.line);
+    }
+
+    return true;
+}
+
+static bool gen_function_varargs_copy(code_t *code, ir_function *self)
+{
+    size_t i, ext, numparams, maxparams;
+
+    ir_builder *ir = self->owner;
+    ir_value   *ep;
+    prog_section_statement stmt;
+
+    numparams = vec_size(self->params);
+    if (!numparams)
+        return true;
+
+    stmt.opcode = INSTR_STORE_V;
+    stmt.o3.s1 = 0;
+    maxparams = numparams + self->max_varargs;
+    for (i = numparams; i < maxparams; ++i) {
+        if (i < 8) {
+            stmt.o1.u1 = OFS_PARM0 + 3*i;
+            stmt.o2.u1 = ir_value_code_addr(self->locals[i]);
+            code_push_statement(code, &stmt, self->context.line);
+            continue;
+        }
+        ext = i - 8;
+        while (ext >= vec_size(ir->extparams))
+            ir_gen_extparam(ir);
+
+        ep = ir->extparams[ext];
+
+        stmt.o1.u1 = ir_value_code_addr(ep);
+        stmt.o2.u1 = ir_value_code_addr(self->locals[i]);
+        code_push_statement(code, &stmt, self->context.line);
     }
 
     return true;
@@ -2981,31 +3215,46 @@ static bool gen_function_locals(ir_builder *ir, ir_value *global)
     prog_section_function *def;
     ir_function           *irfun;
     size_t                 i;
-    uint32_t               firstlocal;
+    uint32_t               firstlocal, firstglobal;
 
     irfun = global->constval.vfunc;
-    def   = code_functions + irfun->code_function_def;
+    def   = ir->code->functions + irfun->code_function_def;
 
-    if (opts.g || !OPTS_OPTIMIZATION(OPTIM_OVERLAP_LOCALS) || (irfun->flags & IR_FLAG_MASK_NO_OVERLAP))
-        firstlocal = def->firstlocal = vec_size(code_globals);
-    else {
+    if (OPTS_OPTION_BOOL(OPTION_G) ||
+        !OPTS_OPTIMIZATION(OPTIM_OVERLAP_LOCALS)        ||
+        (irfun->flags & IR_FLAG_MASK_NO_OVERLAP))
+    {
+        firstlocal = def->firstlocal = vec_size(ir->code->globals);
+    } else {
         firstlocal = def->firstlocal = ir->first_common_local;
         ++opts_optimizationcount[OPTIM_OVERLAP_LOCALS];
     }
 
-    for (i = vec_size(code_globals); i < firstlocal + irfun->allocated_locals; ++i)
-        vec_push(code_globals, 0);
+    firstglobal = (OPTS_OPTIMIZATION(OPTIM_GLOBAL_TEMPS) ? ir->first_common_globaltemp : firstlocal);
+
+    for (i = vec_size(ir->code->globals); i < firstlocal + irfun->allocated_locals; ++i)
+        vec_push(ir->code->globals, 0);
     for (i = 0; i < vec_size(irfun->locals); ++i) {
-        ir_value_code_setaddr(irfun->locals[i], firstlocal + irfun->locals[i]->code.local);
-        if (!ir_builder_gen_global(ir, irfun->locals[i], true, true)) {
-            irerror(irfun->locals[i]->context, "failed to generate local %s", irfun->locals[i]->name);
-            return false;
+        ir_value *v = irfun->locals[i];
+        if (v->locked || !OPTS_OPTIMIZATION(OPTIM_GLOBAL_TEMPS)) {
+            ir_value_code_setaddr(v, firstlocal + v->code.local);
+            if (!ir_builder_gen_global(ir, irfun->locals[i], true)) {
+                irerror(irfun->locals[i]->context, "failed to generate local %s", irfun->locals[i]->name);
+                return false;
+            }
         }
+        else
+            ir_value_code_setaddr(v, firstglobal + v->code.local);
     }
     for (i = 0; i < vec_size(irfun->values); ++i)
     {
         ir_value *v = irfun->values[i];
-        ir_value_code_setaddr(v, firstlocal + v->code.local);
+        if (v->callparam)
+            continue;
+        if (v->locked)
+            ir_value_code_setaddr(v, firstlocal + v->code.local);
+        else
+            ir_value_code_setaddr(v, firstglobal + v->code.local);
     }
     return true;
 }
@@ -3034,25 +3283,29 @@ static bool gen_global_function_code(ir_builder *ir, ir_value *global)
         irerror(irfun->context, "`%s`: IR global wasn't generated, failed to access function-def", irfun->name);
         return false;
     }
-    fundef = &code_functions[irfun->code_function_def];
+    fundef = &ir->code->functions[irfun->code_function_def];
 
-    fundef->entry = vec_size(code_statements);
+    fundef->entry = vec_size(ir->code->statements);
     if (!gen_function_locals(ir, global)) {
         irerror(irfun->context, "Failed to generate locals for function %s", irfun->name);
         return false;
     }
-    if (!gen_function_extparam_copy(irfun)) {
+    if (!gen_function_extparam_copy(ir->code, irfun)) {
         irerror(irfun->context, "Failed to generate extparam-copy code for function %s", irfun->name);
         return false;
     }
-    if (!gen_function_code(irfun)) {
+    if (irfun->max_varargs && !gen_function_varargs_copy(ir->code, irfun)) {
+        irerror(irfun->context, "Failed to generate vararg-copy code for function %s", irfun->name);
+        return false;
+    }
+    if (!gen_function_code(ir->code, irfun)) {
         irerror(irfun->context, "Failed to generate code for function %s", irfun->name);
         return false;
     }
     return true;
 }
 
-static void gen_vector_defs(prog_section_def def, const char *name)
+static void gen_vector_defs(code_t *code, prog_section_def def, const char *name)
 {
     char  *component;
     size_t len, i;
@@ -3073,14 +3326,16 @@ static void gen_vector_defs(prog_section_def def, const char *name)
     component[len-1] = 'x';
 
     for (i = 0; i < 3; ++i) {
-        def.name = code_genstring(component);
-        vec_push(code_defs, def);
+        def.name = code_genstring(code, component);
+        vec_push(code->defs, def);
         def.offset++;
         component[len-1]++;
     }
+
+    mem_d(component);
 }
 
-static void gen_vector_fields(prog_section_field fld, const char *name)
+static void gen_vector_fields(code_t *code, prog_section_field fld, const char *name)
 {
     char  *component;
     size_t len, i;
@@ -3101,48 +3356,58 @@ static void gen_vector_fields(prog_section_field fld, const char *name)
     component[len-1] = 'x';
 
     for (i = 0; i < 3; ++i) {
-        fld.name = code_genstring(component);
-        vec_push(code_fields, fld);
+        fld.name = code_genstring(code, component);
+        vec_push(code->fields, fld);
         fld.offset++;
         component[len-1]++;
     }
+
+    mem_d(component);
 }
 
-static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool islocal, bool defs_only)
+static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool islocal)
 {
     size_t           i;
     int32_t         *iptr;
     prog_section_def def;
-    bool             pushdef = false;
+    bool             pushdef = opts.optimizeoff;
 
-    if (opts.g || !islocal)
+    def.type   = global->vtype;
+    def.offset = vec_size(self->code->globals);
+    def.name   = 0;
+    if (OPTS_OPTION_BOOL(OPTION_G) || !islocal)
     {
         pushdef = true;
-        def.type   = global->vtype;
-        def.offset = vec_size(code_globals);
 
-        if (global->name) {
+        if (OPTS_OPTIMIZATION(OPTIM_STRIP_CONSTANT_NAMES) &&
+            !(global->flags & IR_FLAG_INCLUDE_DEF) &&
+            (global->name[0] == '#' || global->cvq == CV_CONST))
+        {
+            pushdef = false;
+        }
+
+        if (pushdef && global->name) {
             if (global->name[0] == '#') {
                 if (!self->str_immediate)
-                    self->str_immediate = code_genstring("IMMEDIATE");
+                    self->str_immediate = code_genstring(self->code, "IMMEDIATE");
                 def.name = global->code.name = self->str_immediate;
             }
             else
-                def.name = global->code.name = code_genstring(global->name);
+                def.name = global->code.name = code_genstring(self->code, global->name);
         }
         else
             def.name   = 0;
-        if (defs_only) {
+        if (islocal) {
             def.offset = ir_value_code_addr(global);
-            vec_push(code_defs, def);
+            vec_push(self->code->defs, def);
             if (global->vtype == TYPE_VECTOR)
-                gen_vector_defs(def, global->name);
+                gen_vector_defs(self->code, def, global->name);
             else if (global->vtype == TYPE_FIELD && global->fieldtype == TYPE_VECTOR)
-                gen_vector_defs(def, global->name);
+                gen_vector_defs(self->code, def, global->name);
             return true;
         }
     }
-    if (defs_only)
+    if (islocal)
         return true;
 
     switch (global->vtype)
@@ -3165,102 +3430,103 @@ static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool isloc
          * Maybe this could be an -foption
          * fteqcc creates data for end_sys_* - of size 1, so let's do the same
          */
-        ir_value_code_setaddr(global, vec_size(code_globals));
-        vec_push(code_globals, 0);
+        ir_value_code_setaddr(global, vec_size(self->code->globals));
+        vec_push(self->code->globals, 0);
         /* Add the def */
-        if (pushdef) vec_push(code_defs, def);
+        if (pushdef) vec_push(self->code->defs, def);
         return true;
     case TYPE_POINTER:
-        if (pushdef) vec_push(code_defs, def);
-        return gen_global_pointer(global);
+        if (pushdef) vec_push(self->code->defs, def);
+        return gen_global_pointer(self->code, global);
     case TYPE_FIELD:
         if (pushdef) {
-            vec_push(code_defs, def);
+            vec_push(self->code->defs, def);
             if (global->fieldtype == TYPE_VECTOR)
-                gen_vector_defs(def, global->name);
+                gen_vector_defs(self->code, def, global->name);
         }
-        return gen_global_field(global);
+        return gen_global_field(self->code, global);
     case TYPE_ENTITY:
         /* fall through */
     case TYPE_FLOAT:
     {
-        ir_value_code_setaddr(global, vec_size(code_globals));
+        ir_value_code_setaddr(global, vec_size(self->code->globals));
         if (global->hasvalue) {
             iptr = (int32_t*)&global->constval.ivec[0];
-            vec_push(code_globals, *iptr);
+            vec_push(self->code->globals, *iptr);
         } else {
-            vec_push(code_globals, 0);
+            vec_push(self->code->globals, 0);
         }
         if (!islocal && global->cvq != CV_CONST)
             def.type |= DEF_SAVEGLOBAL;
-        if (pushdef) vec_push(code_defs, def);
+        if (pushdef) vec_push(self->code->defs, def);
 
         return global->code.globaladdr >= 0;
     }
     case TYPE_STRING:
     {
-        ir_value_code_setaddr(global, vec_size(code_globals));
+        ir_value_code_setaddr(global, vec_size(self->code->globals));
         if (global->hasvalue) {
-            vec_push(code_globals, code_genstring(global->constval.vstring));
+            uint32_t load = code_genstring(self->code, global->constval.vstring);
+            vec_push(self->code->globals, load);
         } else {
-            vec_push(code_globals, 0);
+            vec_push(self->code->globals, 0);
         }
         if (!islocal && global->cvq != CV_CONST)
             def.type |= DEF_SAVEGLOBAL;
-        if (pushdef) vec_push(code_defs, def);
+        if (pushdef) vec_push(self->code->defs, def);
         return global->code.globaladdr >= 0;
     }
     case TYPE_VECTOR:
     {
         size_t d;
-        ir_value_code_setaddr(global, vec_size(code_globals));
+        ir_value_code_setaddr(global, vec_size(self->code->globals));
         if (global->hasvalue) {
             iptr = (int32_t*)&global->constval.ivec[0];
-            vec_push(code_globals, iptr[0]);
+            vec_push(self->code->globals, iptr[0]);
             if (global->code.globaladdr < 0)
                 return false;
             for (d = 1; d < type_sizeof_[global->vtype]; ++d) {
-                vec_push(code_globals, iptr[d]);
+                vec_push(self->code->globals, iptr[d]);
             }
         } else {
-            vec_push(code_globals, 0);
+            vec_push(self->code->globals, 0);
             if (global->code.globaladdr < 0)
                 return false;
             for (d = 1; d < type_sizeof_[global->vtype]; ++d) {
-                vec_push(code_globals, 0);
+                vec_push(self->code->globals, 0);
             }
         }
         if (!islocal && global->cvq != CV_CONST)
             def.type |= DEF_SAVEGLOBAL;
 
         if (pushdef) {
-            vec_push(code_defs, def);
+            vec_push(self->code->defs, def);
             def.type &= ~DEF_SAVEGLOBAL;
-            gen_vector_defs(def, global->name);
+            gen_vector_defs(self->code, def, global->name);
         }
         return global->code.globaladdr >= 0;
     }
     case TYPE_FUNCTION:
-        ir_value_code_setaddr(global, vec_size(code_globals));
+        ir_value_code_setaddr(global, vec_size(self->code->globals));
         if (!global->hasvalue) {
-            vec_push(code_globals, 0);
+            vec_push(self->code->globals, 0);
             if (global->code.globaladdr < 0)
                 return false;
         } else {
-            vec_push(code_globals, vec_size(code_functions));
+            vec_push(self->code->globals, vec_size(self->code->functions));
             if (!gen_global_function(self, global))
                 return false;
         }
         if (!islocal && global->cvq != CV_CONST)
             def.type |= DEF_SAVEGLOBAL;
-        if (pushdef) vec_push(code_defs, def);
+        if (pushdef) vec_push(self->code->defs, def);
         return true;
     case TYPE_VARIANT:
         /* assume biggest type */
-            ir_value_code_setaddr(global, vec_size(code_globals));
-            vec_push(code_globals, 0);
+            ir_value_code_setaddr(global, vec_size(self->code->globals));
+            vec_push(self->code->globals, 0);
             for (i = 1; i < type_sizeof_[TYPE_VARIANT]; ++i)
-                vec_push(code_globals, 0);
+                vec_push(self->code->globals, 0);
             return true;
     default:
         /* refuse to create 'void' type or any other fancy business. */
@@ -3270,9 +3536,9 @@ static bool ir_builder_gen_global(ir_builder *self, ir_value *global, bool isloc
     }
 }
 
-static void ir_builder_prepare_field(ir_value *field)
+static GMQCC_INLINE void ir_builder_prepare_field(code_t *code, ir_value *field)
 {
-    field->code.fieldaddr = code_alloc_field(type_sizeof_[field->fieldtype]);
+    field->code.fieldaddr = code_alloc_field(code, type_sizeof_[field->fieldtype]);
 }
 
 static bool ir_builder_gen_field(ir_builder *self, ir_value *field)
@@ -3283,10 +3549,10 @@ static bool ir_builder_gen_field(ir_builder *self, ir_value *field)
     (void)self;
 
     def.type   = (uint16_t)field->vtype;
-    def.offset = (uint16_t)vec_size(code_globals);
+    def.offset = (uint16_t)vec_size(self->code->globals);
 
     /* create a global named the same as the field */
-    if (opts.standard == COMPILER_GMQCC) {
+    if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_GMQCC) {
         /* in our standard, the global gets a dot prefix */
         size_t len = strlen(field->name);
         char name[1024];
@@ -3303,7 +3569,7 @@ static bool ir_builder_gen_field(ir_builder *self, ir_value *field)
         memcpy(name+1, field->name, len); /* no strncpy - we used strlen above */
         name[len+1] = 0;
 
-        def.name = code_genstring(name);
+        def.name = code_genstring(self->code, name);
         fld.name = def.name + 1; /* we reuse that string table entry */
     } else {
         /* in plain QC, there cannot be a global with the same name,
@@ -3311,13 +3577,13 @@ static bool ir_builder_gen_field(ir_builder *self, ir_value *field)
          * FIXME: fteqcc should create a global as well
          * check if it actually uses the same name. Probably does
          */
-        def.name = code_genstring(field->name);
+        def.name = code_genstring(self->code, field->name);
         fld.name = def.name;
     }
 
     field->code.name = def.name;
 
-    vec_push(code_defs, def);
+    vec_push(self->code->defs, def);
 
     fld.type = field->fieldtype;
 
@@ -3328,18 +3594,18 @@ static bool ir_builder_gen_field(ir_builder *self, ir_value *field)
 
     fld.offset = field->code.fieldaddr;
 
-    vec_push(code_fields, fld);
+    vec_push(self->code->fields, fld);
 
-    ir_value_code_setaddr(field, vec_size(code_globals));
-    vec_push(code_globals, fld.offset);
+    ir_value_code_setaddr(field, vec_size(self->code->globals));
+    vec_push(self->code->globals, fld.offset);
     if (fld.type == TYPE_VECTOR) {
-        vec_push(code_globals, fld.offset+1);
-        vec_push(code_globals, fld.offset+2);
+        vec_push(self->code->globals, fld.offset+1);
+        vec_push(self->code->globals, fld.offset+2);
     }
 
     if (field->fieldtype == TYPE_VECTOR) {
-        gen_vector_defs(def, field->name);
-        gen_vector_fields(fld, field->name);
+        gen_vector_defs  (self->code, def, field->name);
+        gen_vector_fields(self->code, fld, field->name);
     }
 
     return field->code.globaladdr >= 0;
@@ -3351,16 +3617,14 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
     size_t i;
     char  *lnofile = NULL;
 
-    code_init();
-
     for (i = 0; i < vec_size(self->fields); ++i)
     {
-        ir_builder_prepare_field(self->fields[i]);
+        ir_builder_prepare_field(self->code, self->fields[i]);
     }
 
     for (i = 0; i < vec_size(self->globals); ++i)
     {
-        if (!ir_builder_gen_global(self, self->globals[i], false, false)) {
+        if (!ir_builder_gen_global(self, self->globals[i], false)) {
             return false;
         }
         if (self->globals[i]->vtype == TYPE_FUNCTION) {
@@ -3370,6 +3634,8 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
             {
                 self->max_locals = func->allocated_locals;
             }
+            if (func && self->max_globaltemps < func->globaltemps)
+                self->max_globaltemps = func->globaltemps;
         }
     }
 
@@ -3380,10 +3646,21 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
         }
     }
 
+    /* generate nil */
+    ir_value_code_setaddr(self->nil, vec_size(self->code->globals));
+    vec_push(self->code->globals, 0);
+    vec_push(self->code->globals, 0);
+    vec_push(self->code->globals, 0);
+
+    /* generate global temps */
+    self->first_common_globaltemp = vec_size(self->code->globals);
+    for (i = 0; i < self->max_globaltemps; ++i) {
+        vec_push(self->code->globals, 0);
+    }
     /* generate common locals */
-    self->first_common_local = vec_size(code_globals);
+    self->first_common_local = vec_size(self->code->globals);
     for (i = 0; i < self->max_locals; ++i) {
-        vec_push(code_globals, 0);
+        vec_push(self->code->globals, 0);
     }
 
     /* generate function code */
@@ -3396,30 +3673,30 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
         }
     }
 
-    if (vec_size(code_globals) >= 65536) {
+    if (vec_size(self->code->globals) >= 65536) {
         irerror(vec_last(self->globals)->context, "This progs file would require more globals than the metadata can handle. Bailing out.");
         return false;
     }
 
     /* DP errors if the last instruction is not an INSTR_DONE. */
-    if (vec_last(code_statements).opcode != INSTR_DONE)
+    if (vec_last(self->code->statements).opcode != INSTR_DONE)
     {
         stmt.opcode = INSTR_DONE;
         stmt.o1.u1 = 0;
         stmt.o2.u1 = 0;
         stmt.o3.u1 = 0;
-        code_push_statement(&stmt, vec_last(code_linenums));
+        code_push_statement(self->code, &stmt, vec_last(self->code->linenums));
     }
 
-    if (opts.pp_only)
+    if (OPTS_OPTION_BOOL(OPTION_PP_ONLY))
         return true;
 
-    if (vec_size(code_statements) != vec_size(code_linenums)) {
+    if (vec_size(self->code->statements) != vec_size(self->code->linenums)) {
         con_err("Linecounter wrong: %lu != %lu\n",
-                (unsigned long)vec_size(code_statements),
-                (unsigned long)vec_size(code_linenums));
+                (unsigned long)vec_size(self->code->statements),
+                (unsigned long)vec_size(self->code->linenums));
     } else if (OPTS_FLAG(LNO)) {
-        char *dot;
+        char  *dot;
         size_t filelen = strlen(filename);
 
         memcpy(vec_add(lnofile, filelen+1), filename, filelen+1);
@@ -3432,11 +3709,13 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
         memcpy(vec_add(lnofile, 5), ".lno", 5);
     }
 
-    if (lnofile)
-        con_out("writing '%s' and '%s'...\n", filename, lnofile);
-    else
-        con_out("writing '%s'\n", filename);
-    if (!code_write(filename, lnofile)) {
+    if (!OPTS_OPTION_BOOL(OPTION_QUIET)) {
+        if (lnofile)
+            con_out("writing '%s' and '%s'...\n", filename, lnofile);
+        else
+            con_out("writing '%s'\n", filename);
+    }
+    if (!code_write(self->code, filename, lnofile)) {
         vec_free(lnofile);
         return false;
     }
@@ -3454,7 +3733,7 @@ bool ir_builder_generate(ir_builder *self, const char *filename)
 #   define strncat(dst, src, sz) strncat_s(dst, sz, src, _TRUNCATE)
 #endif
 
-const char *qc_opname(int op)
+static const char *qc_opname(int op)
 {
     if (op < 0) return "<INVALID>";
     if (op < (int)( sizeof(asm_instr) / sizeof(asm_instr[0]) ))
@@ -3488,6 +3767,10 @@ void ir_builder_dump(ir_builder *b, int (*oprintf)(const char*, ...))
     oprintf("endmodule %s\n", b->name);
 }
 
+static const char *storenames[] = {
+    "[global]", "[local]", "[param]", "[value]", "[return]"
+};
+
 void ir_function_dump(ir_function *f, char *ind,
                       int (*oprintf)(const char*, ...))
 {
@@ -3497,7 +3780,7 @@ void ir_function_dump(ir_function *f, char *ind,
         return;
     }
     oprintf("%sfunction %s\n", ind, f->name);
-    strncat(ind, "\t", IND_BUFSZ);
+    strncat(ind, "\t", IND_BUFSZ-1);
     if (vec_size(f->locals))
     {
         oprintf("%s%i locals:\n", ind, (int)vec_size(f->locals));
@@ -3509,30 +3792,77 @@ void ir_function_dump(ir_function *f, char *ind,
     }
     oprintf("%sliferanges:\n", ind);
     for (i = 0; i < vec_size(f->locals); ++i) {
-        size_t l;
+        const char *attr = "";
+        size_t l, m;
         ir_value *v = f->locals[i];
-        oprintf("%s\t%s: %s@%i ", ind, v->name, (v->unique_life ? "unique " : ""), (int)v->code.local);
+        if (v->unique_life && v->locked)
+            attr = "unique,locked ";
+        else if (v->unique_life)
+            attr = "unique ";
+        else if (v->locked)
+            attr = "locked ";
+        oprintf("%s\t%s: %s %s %s%s@%i ", ind, v->name, type_name[v->vtype],
+                storenames[v->store],
+                attr, (v->callparam ? "callparam " : ""),
+                (int)v->code.local);
+        if (!v->life)
+            oprintf("[null]");
         for (l = 0; l < vec_size(v->life); ++l) {
             oprintf("[%i,%i] ", v->life[l].start, v->life[l].end);
         }
         oprintf("\n");
+        for (m = 0; m < 3; ++m) {
+            ir_value *vm = v->members[m];
+            if (!vm)
+                continue;
+            oprintf("%s\t%s: @%i ", ind, vm->name, (int)vm->code.local);
+            for (l = 0; l < vec_size(vm->life); ++l) {
+                oprintf("[%i,%i] ", vm->life[l].start, vm->life[l].end);
+            }
+            oprintf("\n");
+        }
     }
     for (i = 0; i < vec_size(f->values); ++i) {
-        size_t l;
+        const char *attr = "";
+        size_t l, m;
         ir_value *v = f->values[i];
-        oprintf("%s\t%s: @%i ", ind, v->name, (int)v->code.local);
+        if (v->unique_life && v->locked)
+            attr = "unique,locked ";
+        else if (v->unique_life)
+            attr = "unique ";
+        else if (v->locked)
+            attr = "locked ";
+        oprintf("%s\t%s: %s %s %s%s@%i ", ind, v->name, type_name[v->vtype],
+                storenames[v->store],
+                attr, (v->callparam ? "callparam " : ""),
+                (int)v->code.local);
+        if (!v->life)
+            oprintf("[null]");
         for (l = 0; l < vec_size(v->life); ++l) {
             oprintf("[%i,%i] ", v->life[l].start, v->life[l].end);
         }
         oprintf("\n");
+        for (m = 0; m < 3; ++m) {
+            ir_value *vm = v->members[m];
+            if (!vm)
+                continue;
+            if (vm->unique_life && vm->locked)
+                attr = "unique,locked ";
+            else if (vm->unique_life)
+                attr = "unique ";
+            else if (vm->locked)
+                attr = "locked ";
+            oprintf("%s\t%s: %s@%i ", ind, vm->name, attr, (int)vm->code.local);
+            for (l = 0; l < vec_size(vm->life); ++l) {
+                oprintf("[%i,%i] ", vm->life[l].start, vm->life[l].end);
+            }
+            oprintf("\n");
+        }
     }
     if (vec_size(f->blocks))
     {
-        oprintf("%slife passes (check): %i\n", ind, (int)f->run_id);
+        oprintf("%slife passes: %i\n", ind, (int)f->run_id);
         for (i = 0; i < vec_size(f->blocks); ++i) {
-            if (f->blocks[i]->run_id != f->run_id) {
-                oprintf("%slife pass check fail! %i != %i\n", ind, (int)f->blocks[i]->run_id, (int)f->run_id);
-            }
             ir_block_dump(f->blocks[i], ind, oprintf);
         }
 
@@ -3546,14 +3876,16 @@ void ir_block_dump(ir_block* b, char *ind,
 {
     size_t i;
     oprintf("%s:%s\n", ind, b->label);
-    strncat(ind, "\t", IND_BUFSZ);
+    strncat(ind, "\t", IND_BUFSZ-1);
 
+    if (b->instr && b->instr[0])
+        oprintf("%s (%i) [entry]\n", ind, (int)(b->instr[0]->eid-1));
     for (i = 0; i < vec_size(b->instr); ++i)
         ir_instr_dump(b->instr[i], ind, oprintf);
     ind[strlen(ind)-1] = 0;
 }
 
-void dump_phi(ir_instr *in, int (*oprintf)(const char*, ...))
+static void dump_phi(ir_instr *in, int (*oprintf)(const char*, ...))
 {
     size_t i;
     oprintf("%s <- phi ", in->_ops[0]->name);
@@ -3578,7 +3910,7 @@ void ir_instr_dump(ir_instr *in, char *ind,
         return;
     }
 
-    strncat(ind, "\t", IND_BUFSZ);
+    strncat(ind, "\t", IND_BUFSZ-1);
 
     if (in->_ops[0] && (in->_ops[1] || in->_ops[2])) {
         ir_value_dump(in->_ops[0], oprintf);
@@ -3623,7 +3955,7 @@ void ir_instr_dump(ir_instr *in, char *ind,
     ind[strlen(ind)-1] = 0;
 }
 
-void ir_value_dump_string(const char *str, int (*oprintf)(const char*, ...))
+static void ir_value_dump_string(const char *str, int (*oprintf)(const char*, ...))
 {
     oprintf("\"");
     for (; *str; ++str) {