#include "type_t.h"
#include "ast_t.h"
#include "parser.h"
+#include "diagnostic.h"
#include "lang_features.h"
#include "driver/firm_opt.h"
#include "driver/firm_cmdline.h"
static struct obstack asm_obst;
-typedef enum declaration_type_t {
- DECLARATION_TYPE_UNKNOWN,
- DECLARATION_TYPE_FUNCTION,
- DECLARATION_TYPE_GLOBAL_VARIABLE,
- DECLARATION_TYPE_LOCAL_VARIABLE,
- DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
- DECLARATION_TYPE_COMPOUND_MEMBER,
- DECLARATION_TYPE_LABEL_BLOCK,
- DECLARATION_TYPE_ENUM_ENTRY
-} declaration_type_t;
+typedef enum declaration_kind_t {
+ DECLARATION_KIND_UNKNOWN,
+ DECLARATION_KIND_FUNCTION,
+ DECLARATION_KIND_GLOBAL_VARIABLE,
+ DECLARATION_KIND_LOCAL_VARIABLE,
+ DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
+ DECLARATION_KIND_COMPOUND_MEMBER,
+ DECLARATION_KIND_LABEL_BLOCK,
+ DECLARATION_KIND_ENUM_ENTRY
+} declaration_kind_t;
static ir_type *get_ir_type(type_t *type);
static int count_decls_in_stmts(const statement_t *stmt);
ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
{
- (void) pos;
-#if 0
- const declaration_t *declaration = & value_numbers[pos]->declaration;
+ const declaration_t *declaration = get_irg_loc_description(irg, pos);
- print_warning_prefix(declaration->source_position);
- fprintf(stderr, "variable '%s' might be used uninitialized\n",
- declaration->symbol->string);
-#endif
- fprintf(stderr, "Some variable might be used uninitialized\n");
+ warningf(declaration->source_position, "variable '%#T' might be used uninitialized",
+ declaration->type, declaration->symbol);
return new_r_Unknown(irg, mode);
}
static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
{
ir_mode *res = NULL;
- if ((unsigned)atomic_type->atype < (unsigned)ATOMIC_TYPE_LAST)
- res = _atomic_modes[(unsigned)atomic_type->atype];
+ if ((unsigned)atomic_type->akind < (unsigned)ATOMIC_TYPE_LAST)
+ res = _atomic_modes[(unsigned)atomic_type->akind];
if (res == NULL)
panic("Encountered unknown atomic type");
return res;
static unsigned get_atomic_type_size(const atomic_type_t *type)
{
- switch(type->atype) {
+ switch(type->akind) {
case ATOMIC_TYPE_CHAR:
case ATOMIC_TYPE_SCHAR:
case ATOMIC_TYPE_UCHAR:
type = skip_typeref(type);
switch(type->kind) {
+ case TYPE_ERROR:
+ panic("error type occured");
case TYPE_ATOMIC:
return get_atomic_type_size(&type->atomic);
case TYPE_ENUM:
return get_array_type_size(&type->array);
case TYPE_BUILTIN:
return get_type_size(type->builtin.real_type);
+ case TYPE_BITFIELD:
+ panic("type size of bitfield request");
case TYPE_TYPEDEF:
case TYPE_TYPEOF:
case TYPE_INVALID:
ident *id = get_mode_ident(mode);
ir_type *irtype = new_type_primitive(id, mode);
- if(type->atype == ATOMIC_TYPE_LONG_DOUBLE) {
+ if(type->akind == ATOMIC_TYPE_LONG_DOUBLE
+ || type->akind == ATOMIC_TYPE_DOUBLE) {
set_type_alignment_bytes(irtype, 4);
}
return ir_type;
}
+/**
+ * Return the signed integer type of size bits.
+ *
+ * @param size the size
+ */
+static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
+ unsigned size)
+{
+ static ir_mode *s_modes[64 + 1] = {NULL, };
+ ir_type *res;
+ ir_mode *mode;
+
+ if (size <= 0 || size > 64)
+ return NULL;
+
+ mode = s_modes[size];
+ if (mode == NULL) {
+ char name[32];
+
+ snprintf(name, sizeof(name), "bf_I%u", size);
+ mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
+ size <= 32 ? 32 : size );
+ s_modes[size] = mode;
+ }
+
+ char name[32];
+ snprintf(name, sizeof(name), "I%u", size);
+ ident *id = new_id_from_str(name);
+ res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
+ set_primitive_base_type(res, base_tp);
+
+ return res;
+}
+
+/**
+ * Return the unsigned integer type of size bits.
+ *
+ * @param size the size
+ */
+static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
+ unsigned size)
+{
+ static ir_mode *u_modes[64 + 1] = {NULL, };
+ ir_type *res;
+ ir_mode *mode;
+
+ if (size <= 0 || size > 64)
+ return NULL;
+
+ mode = u_modes[size];
+ if (mode == NULL) {
+ char name[32];
+
+ snprintf(name, sizeof(name), "bf_U%u", size);
+ mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
+ size <= 32 ? 32 : size );
+ u_modes[size] = mode;
+ }
+
+ char name[32];
+
+ snprintf(name, sizeof(name), "U%u", size);
+ ident *id = new_id_from_str(name);
+ res = new_type_primitive(mangle_u(get_type_ident(base_tp), id), mode);
+ set_primitive_base_type(res, base_tp);
+
+ return res;
+}
+
+static ir_type *create_bitfield_type(bitfield_type_t *const type)
+{
+ type_t *base = skip_typeref(type->base);
+ assert(base->kind == TYPE_ATOMIC);
+ ir_type *irbase = get_ir_type(base);
+
+ unsigned size = fold_constant(type->size);
+
+ assert(!is_type_floating(base));
+ if(is_type_signed(base)) {
+ return get_signed_int_type_for_bit_size(irbase, size);
+ } else {
+ return get_unsigned_int_type_for_bit_size(irbase, size);
+ }
+}
+
#define INVALID_TYPE ((ir_type_ptr)-1)
static ir_type *create_struct_type(compound_type_t *type)
} else {
id = unique_ident("__anonymous_struct");
}
- ir_type *ir_type = new_type_struct(id);
+ ir_type *irtype = new_type_struct(id);
- type->type.firm_type = ir_type;
+ type->type.firm_type = irtype;
- int align_all = 1;
- int offset = 0;
- declaration_t *entry = type->declaration->context.declarations;
+ size_t align_all = 1;
+ size_t offset = 0;
+ size_t bit_offset = 0;
+ declaration_t *entry = type->declaration->scope.declarations;
for( ; entry != NULL; entry = entry->next) {
if(entry->namespc != NAMESPACE_NORMAL)
continue;
- ident *ident = new_id_from_str(entry->symbol->string);
- ir_type_ptr entry_ir_type = get_ir_type(entry->type);
+ type_t *entry_type = skip_typeref(entry->type);
+ ir_type *base_irtype;
+ if(entry_type->kind == TYPE_BITFIELD) {
+ base_irtype = get_ir_type(entry_type->bitfield.base);
+ } else {
+ base_irtype = get_ir_type(entry_type);
+ }
+
+ size_t entry_alignment = get_type_alignment_bytes(base_irtype);
+ size_t misalign = offset % entry_alignment;
- int entry_size = get_type_size_bytes(entry_ir_type);
- int entry_alignment = get_type_alignment_bytes(entry_ir_type);
- int misalign = offset % entry_alignment;
- if (misalign != 0)
- offset += entry_alignment - misalign;
+ dbg_info *dbgi = get_dbg_info(&entry->source_position);
+ ir_entity *entity = NULL;
+ if(entry->symbol != NULL) {
+ ident *ident = new_id_from_str(entry->symbol->string);
+ ir_type *entry_irtype = get_ir_type(entry_type);
+ entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
+ } else {
+ /* only bitfields are allowed to be anonymous */
+ assert(entry_type->kind == TYPE_BITFIELD);
+ }
- dbg_info *const dbgi = get_dbg_info(&entry->source_position);
- ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
- set_entity_offset(entity, offset);
- add_struct_member(ir_type, entity);
- entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
- entry->v.entity = entity;
+ size_t base;
+ size_t bits_remainder;
+ if(entry_type->kind == TYPE_BITFIELD) {
+ size_t size_bits = fold_constant(entry_type->bitfield.size);
+ size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
+
+ if(size_bits > rest_size_bits) {
+ /* start a new bucket */
+ offset += entry_alignment - misalign;
+ bit_offset = 0;
+
+ base = offset;
+ bits_remainder = 0;
+ } else {
+ /* put into current bucket */
+ base = offset - misalign;
+ bits_remainder = misalign * 8 + bit_offset;
+ }
+
+ offset += size_bits / 8;
+ bit_offset = bit_offset + (size_bits % 8);
+ } else {
+ size_t entry_size = get_type_size_bytes(base_irtype);
+ if(misalign > 0 || bit_offset > 0)
+ offset += entry_alignment - misalign;
+
+ base = offset;
+ bits_remainder = 0;
+ offset += entry_size;
+ bit_offset = 0;
+ }
- offset += entry_size;
if(entry_alignment > align_all) {
if(entry_alignment % align_all != 0) {
- panic("Uneven alignments not supported yet");
+ panic("uneven alignments not supported yet");
}
align_all = entry_alignment;
}
+
+ if(entity != NULL) {
+ set_entity_offset(entity, base);
+ set_entity_offset_bits_remainder(entity,
+ (unsigned char) bits_remainder);
+ add_struct_member(irtype, entity);
+ entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
+ entry->v.entity = entity;
+ }
}
- int misalign = offset % align_all;
- offset += misalign;
- set_type_alignment_bytes(ir_type, align_all);
- set_type_size_bytes(ir_type, offset);
- set_type_state(ir_type, layout_fixed);
+ size_t misalign = offset % align_all;
+ if(misalign > 0 || bit_offset > 0) {
+ offset += align_all - misalign;
+ }
+ set_type_alignment_bytes(irtype, align_all);
+ set_type_size_bytes(irtype, offset);
+ set_type_state(irtype, layout_fixed);
- return ir_type;
+ return irtype;
}
static ir_type *create_union_type(compound_type_t *type)
} else {
id = unique_ident("__anonymous_union");
}
- ir_type *ir_type = new_type_union(id);
+ ir_type *irtype = new_type_union(id);
- type->type.firm_type = ir_type;
+ type->type.firm_type = irtype;
int align_all = 1;
int size = 0;
- declaration_t *entry = declaration->context.declarations;
+ declaration_t *entry = declaration->scope.declarations;
for( ; entry != NULL; entry = entry->next) {
if(entry->namespc != NAMESPACE_NORMAL)
continue;
- ident *ident = new_id_from_str(entry->symbol->string);
- ir_type_ptr entry_ir_type = get_ir_type(entry->type);
+ ident *ident = new_id_from_str(entry->symbol->string);
+ ir_type *entry_ir_type = get_ir_type(entry->type);
int entry_size = get_type_size_bytes(entry_ir_type);
int entry_alignment = get_type_alignment_bytes(entry_ir_type);
dbg_info *const dbgi = get_dbg_info(&entry->source_position);
- ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
- add_union_member(ir_type, entity);
+ ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
+ dbgi);
+ add_union_member(irtype, entity);
set_entity_offset(entity, 0);
- entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
+ entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
entry->v.entity = entity;
if(entry_size > size) {
}
}
- set_type_alignment_bytes(ir_type, align_all);
- set_type_size_bytes(ir_type, size);
- set_type_state(ir_type, layout_fixed);
+ set_type_alignment_bytes(irtype, align_all);
+ set_type_size_bytes(irtype, size);
+ set_type_state(irtype, layout_fixed);
- return ir_type;
+ return irtype;
}
static ir_node *expression_to_firm(const expression_t *expression);
if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
break;
- declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY;
+ declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
expression_t *const init = declaration->init.enum_value;
if (init != NULL) {
ir_type *firm_type = NULL;
switch(type->kind) {
+ case TYPE_ERROR:
+ panic("error type occured");
case TYPE_ATOMIC:
firm_type = create_atomic_type(&type->atomic);
break;
case TYPE_BUILTIN:
firm_type = get_ir_type(type->builtin.real_type);
break;
+ case TYPE_BITFIELD:
+ firm_type = create_bitfield_type(&type->bitfield);
+ break;
+
case TYPE_TYPEOF:
case TYPE_TYPEDEF:
case TYPE_INVALID:
static ir_entity* get_function_entity(declaration_t *declaration)
{
- if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
+ if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
return declaration->v.entity;
- assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+ assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
symbol_t *symbol = declaration->symbol;
ident *id = new_id_from_str(symbol->string);
/* We should check for file scope here, but as long as we compile C only
this is not needed. */
- int n_params = get_method_n_params(ir_type_method);
- int n_res = get_method_n_ress(ir_type_method);
- ir_ident_ptr id = get_entity_ident(entity);
- int i;
+ int n_params = get_method_n_params(ir_type_method);
+ int n_res = get_method_n_ress(ir_type_method);
+ int i;
if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
/* found abort(), store for later */
}
set_entity_allocation(entity, allocation_static);
- declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
+ declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
declaration->v.entity = entity;
return entity;
return new_d_Const(dbgi, mode, tv);
}
-static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
+static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
+ ir_entity *entity)
{
assert(entity != NULL);
union symconst_symbol sym;
sym.entity_p = entity;
- return new_d_SymConst(dbgi, sym, symconst_addr_ent);
+ return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
}
static ir_node *string_to_firm(const source_position_t *const src_pos,
const char *const id_prefix,
- const char *const string)
+ const string_t *const value)
{
ir_type *const global_type = get_glob_type();
ir_type *const type = new_type_array(unique_ident("strtype"), 1,
ir_type *const elem_type = ir_type_const_char;
ir_mode *const mode = get_type_mode(elem_type);
- const size_t slen = strlen(string) + 1;
+ const char* const string = value->begin;
+ const size_t slen = value->size;
set_array_lower_bound_int(type, 0, 0);
set_array_upper_bound_int(type, 0, slen);
set_array_entity_values(entity, tvs, slen);
free(tvs);
- return create_symconst(dbgi, entity);
+ return create_symconst(dbgi, mode_P_data, entity);
}
static ir_node *string_literal_to_firm(
const string_literal_expression_t* literal)
{
return string_to_firm(&literal->expression.source_position, "Lstr",
- literal->value);
+ &literal->value);
}
static ir_node *wide_string_literal_to_firm(
set_array_entity_values(entity, tvs, slen);
free(tvs);
- return create_symconst(dbgi, entity);
+ return create_symconst(dbgi, mode_P_data, entity);
}
static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
static ir_node *get_global_var_address(dbg_info *const dbgi,
const declaration_t *const decl)
{
- assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
+ assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
ir_entity *const entity = decl->v.entity;
switch ((storage_class_tag_t)decl->storage_class) {
}
default:
- return create_symconst(dbgi, entity);
+ return create_symconst(dbgi, mode_P_data, entity);
+ }
+}
+
+/* Returns the correct base address depending on whether it is a parameter or a
+ * normal local variable */
+static ir_node *get_local_frame(ir_entity *const ent)
+{
+ ir_graph *const irg = current_ir_graph;
+ const ir_type *const owner = get_entity_owner(ent);
+ if (owner == get_irg_frame_type(irg)) {
+ return get_irg_frame(irg);
+ } else {
+ assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
+ return get_irg_value_param_base(irg);
}
}
declaration_t *declaration = ref->declaration;
type_t *type = skip_typeref(declaration->type);
- switch((declaration_type_t) declaration->declaration_type) {
- case DECLARATION_TYPE_UNKNOWN:
+ switch((declaration_kind_t) declaration->declaration_kind) {
+ case DECLARATION_KIND_UNKNOWN:
if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
break;
}
get_ir_type(type);
/* FALLTHROUGH */
- case DECLARATION_TYPE_ENUM_ENTRY: {
+ case DECLARATION_KIND_ENUM_ENTRY: {
ir_mode *const mode = get_ir_mode(type);
return new_Const(mode, declaration->v.enum_val);
}
- case DECLARATION_TYPE_LOCAL_VARIABLE: {
- ir_mode *mode = get_ir_mode(type);
+ case DECLARATION_KIND_LOCAL_VARIABLE: {
+ ir_mode *const mode = get_ir_mode(type);
return get_value(declaration->v.value_number, mode);
}
- case DECLARATION_TYPE_FUNCTION: {
- return create_symconst(dbgi, declaration->v.entity);
+ case DECLARATION_KIND_FUNCTION: {
+ ir_mode *const mode = get_ir_mode(type);
+ return create_symconst(dbgi, mode, declaration->v.entity);
}
- case DECLARATION_TYPE_GLOBAL_VARIABLE: {
+ case DECLARATION_KIND_GLOBAL_VARIABLE: {
ir_node *const addr = get_global_var_address(dbgi, declaration);
ir_type *const irtype = get_entity_type(declaration->v.entity);
return deref_address(irtype, addr, dbgi);
}
- case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
+ case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
ir_entity *entity = declaration->v.entity;
- ir_node *frame = get_irg_frame(current_ir_graph);
+ ir_node *frame = get_local_frame(entity);
ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
ir_type *irtype = get_entity_type(entity);
return deref_address(irtype, sel, dbgi);
}
- case DECLARATION_TYPE_COMPOUND_MEMBER:
- case DECLARATION_TYPE_LABEL_BLOCK:
+ case DECLARATION_KIND_COMPOUND_MEMBER:
+ case DECLARATION_KIND_LABEL_BLOCK:
panic("not implemented reference type");
}
dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
declaration_t *declaration = ref->declaration;
- switch((declaration_type_t) declaration->declaration_type) {
- case DECLARATION_TYPE_UNKNOWN:
+ switch((declaration_kind_t) declaration->declaration_kind) {
+ case DECLARATION_KIND_UNKNOWN:
break;
- case DECLARATION_TYPE_LOCAL_VARIABLE:
+ case DECLARATION_KIND_LOCAL_VARIABLE:
panic("local variable without entity has no address");
- case DECLARATION_TYPE_FUNCTION: {
- return create_symconst(dbgi, declaration->v.entity);
+ case DECLARATION_KIND_FUNCTION: {
+ type_t *const type = skip_typeref(ref->expression.datatype);
+ ir_mode *const mode = get_ir_mode(type);
+ return create_symconst(dbgi, mode, declaration->v.entity);
}
- case DECLARATION_TYPE_GLOBAL_VARIABLE: {
+ case DECLARATION_KIND_GLOBAL_VARIABLE: {
ir_node *const addr = get_global_var_address(dbgi, declaration);
return addr;
}
- case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
+ case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
ir_entity *entity = declaration->v.entity;
- ir_node *frame = get_irg_frame(current_ir_graph);
+ ir_node *frame = get_local_frame(entity);
ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
return sel;
}
- case DECLARATION_TYPE_ENUM_ENTRY:
+ case DECLARATION_KIND_ENUM_ENTRY:
panic("trying to reference enum entry");
- case DECLARATION_TYPE_COMPOUND_MEMBER:
- case DECLARATION_TYPE_LABEL_BLOCK:
+ case DECLARATION_KIND_COMPOUND_MEMBER:
+ case DECLARATION_KIND_LABEL_BLOCK:
panic("not implemented reference type");
}
{
value = do_strict_conv(dbgi, value);
- ir_node *memory = get_store();
+ ir_node *memory = get_store();
if(is_type_scalar(type)) {
ir_node *store = new_d_Store(dbgi, memory, addr, value);
}
}
+static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
+{
+ tarval *all_one = get_mode_all_one(mode);
+ int mode_size = get_mode_size_bits(mode);
+
+ assert(offset >= 0 && size >= 0);
+ assert(offset + size <= mode_size);
+ if(size == mode_size) {
+ return all_one;
+ }
+
+ long shiftr = get_mode_size_bits(mode) - size;
+ long shiftl = offset;
+ tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
+ tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
+ tarval *mask0 = tarval_shr(all_one, tv_shiftr);
+ tarval *mask1 = tarval_shl(mask0, tv_shiftl);
+
+ return mask1;
+}
+
+static void bitfield_store_to_firm(const unary_expression_t *expression,
+ ir_node *value)
+{
+ expression_t *select = expression->value;
+ assert(select->kind == EXPR_SELECT);
+ type_t *type = select->base.datatype;
+ assert(type->kind == TYPE_BITFIELD);
+ ir_mode *mode = get_ir_mode(type->bitfield.base);
+ ir_node *addr = expression_to_addr(select);
+
+ assert(get_irn_mode(value) == mode);
+
+ dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
+
+ /* kill upper bits of value and shift to right position */
+ ir_entity *entity = select->select.compound_entry->v.entity;
+ int bitoffset = get_entity_offset_bits_remainder(entity);
+ ir_type *entity_type = get_entity_type(entity);
+ int bitsize = get_mode_size_bits(get_type_mode(entity_type));
+
+ tarval *mask = create_bitfield_mask(mode, 0, bitsize);
+ ir_node *mask_node = new_d_Const(dbgi, mode, mask);
+ ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
+ tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
+ ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
+ ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
+
+ /* load current value */
+ ir_node *mem = get_store();
+ ir_node *load = new_d_Load(dbgi, mem, addr, mode);
+ ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
+ ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+ tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
+ tarval *inv_mask = tarval_not(shift_mask);
+ ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
+ ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
+
+ /* construct new value and store */
+ ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
+ ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
+ ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
+ set_store(store_mem);
+}
+
static void set_value_for_expression(const expression_t *expression,
ir_node *value)
{
const reference_expression_t *ref = &expression->reference;
declaration_t *declaration = ref->declaration;
- assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
- if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
+ assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
+ if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
set_value(declaration->v.value_number, value);
return;
}
}
+ if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
+ bitfield_store_to_firm(&expression->unary, value);
+ return;
+ }
+
ir_node *addr = expression_to_addr(expression);
type_t *type = skip_typeref(expression->base.datatype);
assign_value(dbgi, addr, type, value);
return false;
reference_expression_t *ref_expr = &expression->reference;
declaration_t *declaration = ref_expr->declaration;
- return declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE;
+ return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
}
static pn_Cmp get_pnc(const expression_kind_t kind)
* - const rel val
* - var rel var
*/
-static ir_node *handle_assume_compare(dbg_info *dbi, const binary_expression_t *expression)
+static ir_node *handle_assume_compare(dbg_info *dbi,
+ const binary_expression_t *expression)
{
expression_t *op1 = expression->left;
expression_t *op2 = expression->right;
- expression_t *con;
declaration_t *var2, *var = NULL;
ir_node *res = NULL;
pn_Cmp cmp_val;
var = op1->reference.declaration;
var2 = op2->reference.declaration;
- type_t *type = skip_typeref(var->type);
+ type_t *const type = skip_typeref(var->type);
ir_mode *const mode = get_ir_mode(type);
- ir_node *irn1 = get_value(var->v.value_number, mode);
- ir_node *irn2 = get_value(var2->v.value_number, mode);
+ ir_node *const irn1 = get_value(var->v.value_number, mode);
+ ir_node *const irn2 = get_value(var2->v.value_number, mode);
res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
set_value(var2->v.value_number, res);
return res;
}
+ expression_t *con;
if (is_local_variable(op1) && is_constant_expression(op2)) {
var = op1->reference.declaration;
con = op2;
}
if (var != NULL) {
- type_t *type = skip_typeref(var->type);
+ type_t *const type = skip_typeref(var->type);
ir_mode *const mode = get_ir_mode(type);
res = get_value(var->v.value_number, mode);
}
}
+static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
+{
+ expression_t *select = expression->value;
+ assert(select->kind == EXPR_SELECT);
+
+ type_t *type = select->base.datatype;
+ assert(type->kind == TYPE_BITFIELD);
+ ir_mode *mode = get_ir_mode(type->bitfield.base);
+ dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
+ ir_node *addr = expression_to_addr(select);
+ ir_node *mem = get_store();
+ ir_node *load = new_d_Load(dbgi, mem, addr, mode);
+ ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
+ ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+
+ load_res = create_conv(dbgi, load_res, mode_int);
+
+ set_store(load_mem);
+
+ /* kill upper bits */
+ ir_entity *entity = select->select.compound_entry->v.entity;
+ int bitoffset = get_entity_offset_bits_remainder(entity);
+ ir_type *entity_type = get_entity_type(entity);
+ int bitsize = get_mode_size_bits(get_type_mode(entity_type));
+ long shift_bitsl = machine_size - bitoffset - bitsize;
+ assert(shift_bitsl >= 0);
+ tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
+ ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
+ ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
+
+ long shift_bitsr = bitoffset + shift_bitsl;
+ assert(shift_bitsr <= (long) machine_size);
+ tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
+ ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
+ ir_node *shiftr;
+ if(mode_is_signed(mode)) {
+ shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
+ } else {
+ shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
+ }
+
+ return create_conv(dbgi, shiftr, mode);
+}
+
static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
{
dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
return handle_assume(dbgi, value);
else
return NULL;
+ case EXPR_UNARY_BITFIELD_EXTRACT:
+ return bitfield_extract_to_firm(expression);
default:
break;
ir_node *value;
if (is_type_pointer(type)) {
- ir_node *const pointer = expression_to_firm(expression->left);
- ir_node * integer = expression_to_firm(expression->right);
+ ir_node *const pointer = expression_to_firm(expression->left);
+ ir_node * integer = expression_to_firm(expression->right);
value = pointer_arithmetic(pointer, integer, type, dbgi, func);
} else {
value = create_arithmetic_binop(expression, func);
}
- ir_mode *const mode = get_ir_mode(type);
+ ir_mode *const mode = get_ir_mode(type);
value = create_conv(dbgi, value, mode);
set_value_for_expression(expression->left, value);
assert(type != NULL);
}
- ir_mode *mode = get_ir_mode(expression->expression.datatype);
- unsigned size = get_type_size(type);
- ir_node *size_node = new_Const_long(mode, size);
+ ir_mode *const mode = get_ir_mode(expression->expression.datatype);
+ symconst_symbol sym;
+ sym.type_p = get_ir_type(type);
+ return new_SymConst(mode, sym, symconst_type_size);
+}
- return size_node;
+static ir_node *alignof_to_firm(const alignof_expression_t *expression)
+{
+ type_t *const type = expression->type;
+ ir_mode *const mode = get_ir_mode(expression->expression.datatype);
+ symconst_symbol sym;
+ sym.type_p = get_ir_type(type);
+ return new_SymConst(mode, sym, symconst_type_align);
}
static long fold_constant(const expression_t *expression)
static ir_node *conditional_to_firm(const conditional_expression_t *expression)
{
- dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
+ dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
/* first try to fold a constant condition */
if(is_constant_expression(expression->condition)) {
ir_node *compound_addr = expression_to_firm(expression->compound);
declaration_t *entry = expression->compound_entry;
- assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
+ assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
ir_entity *entity = entry->v.entity;
assert(entity != NULL);
{
case TYPE_ATOMIC: {
const atomic_type_t *const atomic_type = &type->atomic;
- switch (atomic_type->atype) {
+ switch (atomic_type->akind) {
/* should not be reached */
case ATOMIC_TYPE_INVALID:
tc = no_type_class;
const source_position_t *const src_pos =
&expr->expression.source_position;
const char *const name = current_function_decl->symbol->string;
- current_function_name = string_to_firm(src_pos, "__func__", name);
+ const string_t string = { name, strlen(name) + 1 };
+ current_function_name = string_to_firm(src_pos, "__func__", &string);
}
return current_function_name;
dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
ir_node *const res = deref_address(irtype, ap, dbgi);
- size_t const parm_size = get_type_size(expr->expression.datatype);
- ir_node *const cnst = new_Const_long(mode_uint, parm_size);
- ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
+ size_t const parm_size = get_type_size(expr->expression.datatype);
+ ir_node *const cnst = new_Const_long(mode_uint, parm_size);
+ ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
set_value_for_expression(expr->ap, add);
return res;
panic("trying to get address of non-lvalue");
}
+static ir_node *builtin_constant_to_firm(
+ const builtin_constant_expression_t *expression)
+{
+ ir_mode *mode = get_ir_mode(expression->expression.datatype);
+ long v;
+
+ if (is_constant_expression(expression->value)) {
+ v = 1;
+ } else {
+ v = 0;
+ }
+ return new_Const_long(mode, v);
+}
+
+static ir_node *builtin_prefetch_to_firm(
+ const builtin_prefetch_expression_t *expression)
+{
+ ir_node *adr = expression_to_firm(expression->adr);
+ /* no Firm support for prefetch yet */
+ (void) adr;
+ return NULL;
+}
+
static ir_node *_expression_to_firm(const expression_t *expression)
{
switch(expression->kind) {
return array_access_to_firm(&expression->array_access);
case EXPR_SIZEOF:
return sizeof_to_firm(&expression->sizeofe);
+ case EXPR_ALIGNOF:
+ return alignof_to_firm(&expression->alignofe);
case EXPR_CONDITIONAL:
return conditional_to_firm(&expression->conditional);
case EXPR_SELECT:
case EXPR_OFFSETOF:
case EXPR_BUILTIN_SYMBOL:
panic("unimplemented expression found");
+ case EXPR_BUILTIN_CONSTANT_P:
+ return builtin_constant_to_firm(&expression->builtin_constant);
+ case EXPR_BUILTIN_PREFETCH:
+ return builtin_prefetch_to_firm(&expression->builtin_prefetch);
case EXPR_UNKNOWN:
case EXPR_INVALID:
ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
+ /* set branch prediction info based on __builtin_expect */
+ if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
+ long cnst = fold_constant(expression->binary.right);
+ cond_jmp_predicate pred;
+
+ if(cnst == 0) {
+ pred = COND_JMP_PRED_FALSE;
+ } else {
+ pred = COND_JMP_PRED_TRUE;
+ }
+ set_Cond_jmp_pred(cond, pred);
+ }
+
add_immBlock_pred(true_block, true_proj);
add_immBlock_pred(false_block, false_proj);
static void create_declaration_entity(declaration_t *declaration,
- declaration_type_t declaration_type,
+ declaration_kind_t declaration_kind,
ir_type *parent_type)
{
ident *const id = new_id_from_str(declaration->symbol->string);
ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
set_entity_ld_ident(entity, id);
- declaration->declaration_type = (unsigned char) declaration_type;
+ declaration->declaration_kind = (unsigned char) declaration_kind;
declaration->v.entity = entity;
set_entity_variability(entity, variability_uninitialized);
if(parent_type == get_tls_type())
set_entity_allocation(entity, allocation_automatic);
- else if(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE)
+ else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
set_entity_allocation(entity, allocation_static);
/* TODO: visibility? */
}
{
declaration_t *compound_declaration = type->declaration;
- declaration_t *compound_entry = compound_declaration->context.declarations;
+ declaration_t *compound_entry = compound_declaration->scope.declarations;
compound_graph_path_entry_t entry;
entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
initializer_t *sub_initializer = initializer->initializers[i];
assert(compound_entry != NULL);
- assert(compound_entry->declaration_type
- == DECLARATION_TYPE_COMPOUND_MEMBER);
+ assert(compound_entry->declaration_kind
+ == DECLARATION_KIND_COMPOUND_MEMBER);
if(sub_initializer->kind == INITIALIZER_VALUE) {
create_initializer_value(&sub_initializer->value,
entry.prev = last_entry;
++len;
- ir_type *irtype = get_entity_type(entity);
- size_t arr_len = get_array_type_size(type);
- const char *p = initializer->string;
- size_t i = 0;
- for(i = 0; i < arr_len; ++i, ++p) {
+ ir_type *const irtype = get_entity_type(entity);
+ size_t arr_len = get_array_type_size(type);
+ const char *const p = initializer->string.begin;
+ if (initializer->string.size < arr_len) {
+ arr_len = initializer->string.size;
+ }
+ for (size_t i = 0; i < arr_len; ++i) {
entry.v.array_index = i;
- ir_node *node = new_Const_long(mode_Bs, *p);
+ ir_node *node = new_Const_long(mode_Bs, p[i]);
compound_graph_path *path = create_compound_path(irtype, &entry, len);
add_compound_ent_value_w_path(entity, node, path);
-
- if(*p == '\0')
- break;
}
}
assert(current_ir_graph == get_const_code_irg());
current_ir_graph = old_current_ir_graph;
- ir_node *const src_addr = create_symconst(dbgi, init_entity);
+ ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
if(initializer == NULL)
return;
- declaration_type_t declaration_type
- = (declaration_type_t) declaration->declaration_type;
- if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
+ declaration_kind_t declaration_kind
+ = (declaration_kind_t) declaration->declaration_kind;
+ if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
create_initializer_local_variable_entity(declaration);
return;
}
ir_node *value = expression_to_firm(initializer_value->value);
- if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
+ if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
set_value(declaration->v.value_number, value);
} else {
- assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
+ assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
ir_entity *entity = declaration->v.entity;
set_atomic_ent_value(entity, value);
}
} else {
- assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
- || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
+ assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
+ || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
ir_entity *entity = declaration->v.entity;
set_entity_variability(entity, variability_initialized);
}
}
+/**
+ * Creates a Firm local variable from a declaration.
+ */
static void create_local_variable(declaration_t *declaration)
{
- assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+ assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
bool needs_entity = declaration->address_taken;
type_t *type = skip_typeref(declaration->type);
if(needs_entity) {
ir_type *frame_type = get_irg_frame_type(current_ir_graph);
create_declaration_entity(declaration,
- DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
+ DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
frame_type);
} else {
- declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
+ declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
declaration->v.value_number = next_value_number_function;
+ set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
++next_value_number_function;
}
static void create_local_static_variable(declaration_t *declaration)
{
- assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
+ assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
type_t *const type = skip_typeref(declaration->type);
ir_type *const global_type = get_glob_type();
ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
set_entity_ld_ident(entity, id);
- declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
+ declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
declaration->v.entity = entity;
set_entity_variability(entity, variability_uninitialized);
set_entity_visibility(entity, visibility_local);
ir_node *result = NULL;
statement_t *statement = compound->statements;
for( ; statement != NULL; statement = statement->base.next) {
- //context2firm(&statement->context);
+ //context2firm(&statement->scope);
if(statement->base.next == NULL
&& statement->kind == STATEMENT_EXPRESSION) {
declaration_t *declaration = statement->declarations_begin;
declaration_t *end = statement->declarations_end->next;
for( ; declaration != end; declaration = declaration->next) {
+ if(declaration->namespc != NAMESPACE_NORMAL)
+ continue;
create_local_variable(declaration);
}
}
}
/* create declarations */
- declaration_t *declaration = statement->context.declarations;
+ declaration_t *declaration = statement->scope.declarations;
for( ; declaration != NULL; declaration = declaration->next) {
create_local_declaration(declaration);
}
current_switch_cond = cond;
break_label = break_block;
- statement_to_firm(statement->body);
+ if (statement->body != NULL) {
+ statement_to_firm(statement->body);
+ }
if(get_cur_block() != NULL) {
ir_node *jmp = new_Jmp();
{
assert(label->namespc == NAMESPACE_LABEL);
- if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
+ if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
return label->v.block;
}
- assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
+ assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
ir_node *old_cur_block = get_cur_block();
ir_node *block = new_immBlock();
set_cur_block(old_cur_block);
- label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
+ label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
label->v.block = block;
ARR_APP1(ir_node *, imature_blocks, block);
{
int count = 0;
for (; decl != end; decl = decl->next) {
+ if(decl->namespc != NAMESPACE_NORMAL)
+ continue;
const type_t *type = skip_typeref(decl->type);
- switch (type->kind) {
- case TYPE_ATOMIC:
- case TYPE_ENUM:
- case TYPE_POINTER:
- if (!decl->address_taken)
- ++count;
- break;
-
- default: break;
- }
+ if (!decl->address_taken && is_type_scalar(type))
+ ++count;
const initializer_t *initializer = decl->init.initializer;
/* FIXME: should walk initializer hierarchies... */
if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
switch(expression->base.kind) {
case EXPR_STATEMENT:
return count_decls_in_stmts(expression->statement.statement);
- EXPR_BINARY_CASES
- return count_decls_in_expression(expression->binary.left)
- + count_decls_in_expression(expression->binary.right);
+ EXPR_BINARY_CASES {
+ int count_left = count_decls_in_expression(expression->binary.left);
+ int count_right = count_decls_in_expression(expression->binary.right);
+ return count_left + count_right;
+ }
EXPR_UNARY_CASES
return count_decls_in_expression(expression->unary.value);
case STATEMENT_FOR: {
const for_statement_t *const for_stmt = &stmt->fors;
- count += count_local_declarations(for_stmt->context.declarations, NULL);
+ count += count_local_declarations(for_stmt->scope.declarations, NULL);
count += count_decls_in_expression(for_stmt->initialisation);
count += count_decls_in_expression(for_stmt->condition);
count += count_decls_in_expression(for_stmt->step);
int count = 0;
/* count parameters */
- count += count_local_declarations(declaration->context.declarations, NULL);
+ count += count_local_declarations(declaration->scope.declarations, NULL);
/* count local variables declared in body */
count += count_decls_in_stmts(declaration->init.statement);
ir_type *function_irtype = get_ir_type(declaration->type);
int n = 0;
- declaration_t *parameter = declaration->context.declarations;
+ declaration_t *parameter = declaration->scope.declarations;
for( ; parameter != NULL; parameter = parameter->next, ++n) {
- assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
+ assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
type_t *type = skip_typeref(parameter->type);
bool needs_entity = parameter->address_taken;
ident *id = new_id_from_str(parameter->symbol->string);
set_entity_ident(entity, id);
- parameter->declaration_type
- = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
+ parameter->declaration_kind
+ = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
parameter->v.entity = entity;
continue;
}
long pn = n;
ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
- parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
+ parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
parameter->v.value_number = next_value_number_function;
+ set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
++next_value_number_function;
set_value(parameter->v.value_number, proj);
/* set inline flags */
if (declaration->is_inline)
set_irg_inline_property(irg, irg_inline_recomended);
- handle_decl_modifier_irg(irg, declaration->decl_modifiers);
+ handle_decl_modifier_irg(irg, declaration->modifiers);
next_value_number_function = 0;
initialize_function_parameters(declaration);
goto create_var;
create_var:
- create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
+ create_declaration_entity(declaration,
+ DECLARATION_KIND_GLOBAL_VARIABLE,
var_type);
set_entity_visibility(declaration->v.entity, vis);
panic("Invalid storage class for global variable");
}
-static void context_to_firm(context_t *context)
+static void scope_to_firm(scope_t *scope)
{
/* first pass: create declarations */
- declaration_t *declaration = context->declarations;
+ declaration_t *declaration = scope->declarations;
for( ; declaration != NULL; declaration = declaration->next) {
if(declaration->namespc != NAMESPACE_NORMAL)
continue;
}
/* second pass: create code */
- declaration = context->declarations;
+ declaration = scope->declarations;
for( ; declaration != NULL; declaration = declaration->next) {
if(declaration->namespc != NAMESPACE_NORMAL)
continue;
break_label = NULL;
current_switch_cond = NULL;
- context_to_firm(&unit->context);
+ scope_to_firm(&unit->scope);
}
projects / cparser / blobdiff