Minor refactoring of lb_build_addr

This commit is contained in:
gingerBill
2022-08-11 16:12:07 +01:00
parent d2a362fd52
commit a19494d3a7

View File

@@ -3616,6 +3616,421 @@ void lb_build_addr_compound_lit_assign_array(lbProcedure *p, Array<lbCompoundLit
}
}
lbAddr lb_build_addr_index_expr(lbProcedure *p, Ast *expr) {
ast_node(ie, IndexExpr, expr);
Type *t = base_type(type_of_expr(ie->expr));
bool deref = is_type_pointer(t);
t = base_type(type_deref(t));
if (is_type_soa_struct(t)) {
// SOA STRUCTURES!!!!
lbValue val = lb_build_addr_ptr(p, ie->expr);
if (deref) {
val = lb_emit_load(p, val);
}
lbValue index = lb_build_expr(p, ie->index);
return lb_addr_soa_variable(val, index, ie->index);
}
if (ie->expr->tav.mode == Addressing_SoaVariable) {
// SOA Structures for slices/dynamic arrays
GB_ASSERT(is_type_pointer(type_of_expr(ie->expr)));
lbValue field = lb_build_expr(p, ie->expr);
lbValue index = lb_build_expr(p, ie->index);
if (!build_context.no_bounds_check) {
// TODO HACK(bill): Clean up this hack to get the length for bounds checking
// GB_ASSERT(LLVMIsALoadInst(field.value));
// lbValue a = {};
// a.value = LLVMGetOperand(field.value, 0);
// a.type = alloc_type_pointer(field.type);
// irInstr *b = &a->Instr;
// GB_ASSERT(b->kind == irInstr_StructElementPtr);
// lbValue base_struct = b->StructElementPtr.address;
// GB_ASSERT(is_type_soa_struct(type_deref(ir_type(base_struct))));
// lbValue len = ir_soa_struct_len(p, base_struct);
// lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
lbValue val = lb_emit_ptr_offset(p, field, index);
return lb_addr(val);
}
GB_ASSERT_MSG(is_type_indexable(t), "%s %s", type_to_string(t), expr_to_string(expr));
if (is_type_map(t)) {
lbAddr map_addr = lb_build_addr(p, ie->expr);
lbValue map_val = lb_addr_load(p, map_addr);
if (deref) {
map_val = lb_emit_load(p, map_val);
}
lbValue key = lb_build_expr(p, ie->index);
key = lb_emit_conv(p, key, t->Map.key);
Type *result_type = type_of_expr(expr);
lbValue map_ptr = lb_address_from_load_or_generate_local(p, map_val);
return lb_addr_map(map_ptr, key, t, result_type);
}
switch (t->kind) {
case Type_Array: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
if (deref) {
array = lb_emit_load(p, array);
}
lbValue index = lb_build_expr(p, ie->index);
index = lb_emit_conv(p, index, t_int);
lbValue elem = lb_emit_array_ep(p, array, index);
auto index_tv = type_and_value_of_expr(ie->index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->Array.count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_EnumeratedArray: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
if (deref) {
array = lb_emit_load(p, array);
}
Type *index_type = t->EnumeratedArray.index;
auto index_tv = type_and_value_of_expr(ie->index);
lbValue index = {};
if (compare_exact_values(Token_NotEq, *t->EnumeratedArray.min_value, exact_value_i64(0))) {
if (index_tv.mode == Addressing_Constant) {
ExactValue idx = exact_value_sub(index_tv.value, *t->EnumeratedArray.min_value);
index = lb_const_value(p->module, index_type, idx);
} else {
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
index = lb_emit_arith(p, Token_Sub, index, lb_const_value(p->module, index_type, *t->EnumeratedArray.min_value), index_type);
}
} else {
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
}
lbValue elem = lb_emit_array_ep(p, array, index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->EnumeratedArray.count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_Slice: {
lbValue slice = {};
slice = lb_build_expr(p, ie->expr);
if (deref) {
slice = lb_emit_load(p, slice);
}
lbValue elem = lb_slice_elem(p, slice);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lbValue len = lb_slice_len(p, slice);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_MultiPointer: {
lbValue multi_ptr = {};
multi_ptr = lb_build_expr(p, ie->expr);
if (deref) {
multi_ptr = lb_emit_load(p, multi_ptr);
}
lbValue index = lb_build_expr(p, ie->index);
lbValue v = {};
LLVMValueRef indices[1] = {index.value};
v.value = LLVMBuildGEP2(p->builder, lb_type(p->module, t->MultiPointer.elem), multi_ptr.value, indices, 1, "foo");
v.type = alloc_type_pointer(t->MultiPointer.elem);
return lb_addr(v);
}
case Type_RelativeSlice: {
lbAddr slice_addr = {};
if (deref) {
slice_addr = lb_addr(lb_build_expr(p, ie->expr));
} else {
slice_addr = lb_build_addr(p, ie->expr);
}
lbValue slice = lb_addr_load(p, slice_addr);
lbValue elem = lb_slice_elem(p, slice);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lbValue len = lb_slice_len(p, slice);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_DynamicArray: {
lbValue dynamic_array = {};
dynamic_array = lb_build_expr(p, ie->expr);
if (deref) {
dynamic_array = lb_emit_load(p, dynamic_array);
}
lbValue elem = lb_dynamic_array_elem(p, dynamic_array);
lbValue len = lb_dynamic_array_len(p, dynamic_array);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_Matrix: {
lbValue matrix = {};
matrix = lb_build_addr_ptr(p, ie->expr);
if (deref) {
matrix = lb_emit_load(p, matrix);
}
lbValue index = lb_build_expr(p, ie->index);
index = lb_emit_conv(p, index, t_int);
lbValue elem = lb_emit_matrix_ep(p, matrix, lb_const_int(p->module, t_int, 0), index);
elem = lb_emit_conv(p, elem, alloc_type_pointer(type_of_expr(expr)));
auto index_tv = type_and_value_of_expr(ie->index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->Matrix.column_count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_Basic: { // Basic_string
lbValue str;
lbValue elem;
lbValue len;
lbValue index;
str = lb_build_expr(p, ie->expr);
if (deref) {
str = lb_emit_load(p, str);
}
elem = lb_string_elem(p, str);
len = lb_string_len(p, str);
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
return lb_addr(lb_emit_ptr_offset(p, elem, index));
}
}
return {};
}
lbAddr lb_build_addr_slice_expr(lbProcedure *p, Ast *expr) {
ast_node(se, SliceExpr, expr);
lbValue low = lb_const_int(p->module, t_int, 0);
lbValue high = {};
if (se->low != nullptr) {
low = lb_correct_endianness(p, lb_build_expr(p, se->low));
}
if (se->high != nullptr) {
high = lb_correct_endianness(p, lb_build_expr(p, se->high));
}
bool no_indices = se->low == nullptr && se->high == nullptr;
lbAddr addr = lb_build_addr(p, se->expr);
lbValue base = lb_addr_load(p, addr);
Type *type = base_type(base.type);
if (is_type_pointer(type)) {
type = base_type(type_deref(type));
addr = lb_addr(base);
base = lb_addr_load(p, addr);
}
switch (type->kind) {
case Type_Slice: {
Type *slice_type = type;
lbValue len = lb_slice_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_slice_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_RelativeSlice:
GB_PANIC("TODO(bill): Type_RelativeSlice should be handled above already on the lb_addr_load");
break;
case Type_DynamicArray: {
Type *elem_type = type->DynamicArray.elem;
Type *slice_type = alloc_type_slice(elem_type);
lbValue len = lb_dynamic_array_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_dynamic_array_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_MultiPointer: {
lbAddr res = lb_add_local_generated(p, type_of_expr(expr), false);
if (se->high == nullptr) {
lbValue offset = base;
LLVMValueRef indices[1] = {low.value};
offset.value = LLVMBuildGEP2(p->builder, lb_type(p->module, offset.type->MultiPointer.elem), offset.value, indices, 1, "");
lb_addr_store(p, res, offset);
} else {
low = lb_emit_conv(p, low, t_int);
high = lb_emit_conv(p, high, t_int);
lb_emit_multi_pointer_slice_bounds_check(p, se->open, low, high);
LLVMValueRef indices[1] = {low.value};
LLVMValueRef ptr = LLVMBuildGEP2(p->builder, lb_type(p->module, base.type->MultiPointer.elem), base.value, indices, 1, "");
LLVMValueRef len = LLVMBuildSub(p->builder, high.value, low.value, "");
LLVMValueRef gep0 = lb_emit_struct_ep(p, res.addr, 0).value;
LLVMValueRef gep1 = lb_emit_struct_ep(p, res.addr, 1).value;
LLVMBuildStore(p->builder, ptr, gep0);
LLVMBuildStore(p->builder, len, gep1);
}
return res;
}
case Type_Array: {
Type *slice_type = alloc_type_slice(type->Array.elem);
lbValue len = lb_const_int(p->module, t_int, type->Array.count);
if (high.value == nullptr) high = len;
bool low_const = type_and_value_of_expr(se->low).mode == Addressing_Constant;
bool high_const = type_and_value_of_expr(se->high).mode == Addressing_Constant;
if (!low_const || !high_const) {
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
}
lbValue elem = lb_emit_ptr_offset(p, lb_array_elem(p, lb_addr_get_ptr(p, addr)), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_Basic: {
GB_ASSERT(type == t_string);
lbValue len = lb_string_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_string_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr str = lb_add_local_generated(p, t_string, false);
lb_fill_string(p, str, elem, new_len);
return str;
}
case Type_Struct:
if (is_type_soa_struct(type)) {
lbValue len = lb_soa_struct_len(p, lb_addr_get_ptr(p, addr));
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
#if 1
lbAddr dst = lb_add_local_generated(p, type_of_expr(expr), true);
if (type->Struct.soa_kind == StructSoa_Fixed) {
i32 field_count = cast(i32)type->Struct.fields.count;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ep(p, lb_addr_get_ptr(p, addr), i);
field_src = lb_emit_array_ep(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
} else if (type->Struct.soa_kind == StructSoa_Slice) {
if (no_indices) {
lb_addr_store(p, dst, base);
} else {
i32 field_count = cast(i32)type->Struct.fields.count - 1;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ev(p, base, i);
field_src = lb_emit_ptr_offset(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
}
} else if (type->Struct.soa_kind == StructSoa_Dynamic) {
i32 field_count = cast(i32)type->Struct.fields.count - 3;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ev(p, base, i);
field_src = lb_emit_ptr_offset(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
}
return dst;
#endif
}
break;
}
GB_PANIC("Unknown slicable type");
return {};
}
lbAddr lb_build_addr_compound_lit(lbProcedure *p, Ast *expr) {
ast_node(cl, CompoundLit, expr);
@@ -4156,217 +4571,7 @@ lbAddr lb_build_addr_internal(lbProcedure *p, Ast *expr) {
case_end;
case_ast_node(ie, IndexExpr, expr);
Type *t = base_type(type_of_expr(ie->expr));
bool deref = is_type_pointer(t);
t = base_type(type_deref(t));
if (is_type_soa_struct(t)) {
// SOA STRUCTURES!!!!
lbValue val = lb_build_addr_ptr(p, ie->expr);
if (deref) {
val = lb_emit_load(p, val);
}
lbValue index = lb_build_expr(p, ie->index);
return lb_addr_soa_variable(val, index, ie->index);
}
if (ie->expr->tav.mode == Addressing_SoaVariable) {
// SOA Structures for slices/dynamic arrays
GB_ASSERT(is_type_pointer(type_of_expr(ie->expr)));
lbValue field = lb_build_expr(p, ie->expr);
lbValue index = lb_build_expr(p, ie->index);
if (!build_context.no_bounds_check) {
// TODO HACK(bill): Clean up this hack to get the length for bounds checking
// GB_ASSERT(LLVMIsALoadInst(field.value));
// lbValue a = {};
// a.value = LLVMGetOperand(field.value, 0);
// a.type = alloc_type_pointer(field.type);
// irInstr *b = &a->Instr;
// GB_ASSERT(b->kind == irInstr_StructElementPtr);
// lbValue base_struct = b->StructElementPtr.address;
// GB_ASSERT(is_type_soa_struct(type_deref(ir_type(base_struct))));
// lbValue len = ir_soa_struct_len(p, base_struct);
// lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
lbValue val = lb_emit_ptr_offset(p, field, index);
return lb_addr(val);
}
GB_ASSERT_MSG(is_type_indexable(t), "%s %s", type_to_string(t), expr_to_string(expr));
if (is_type_map(t)) {
lbAddr map_addr = lb_build_addr(p, ie->expr);
lbValue map_val = lb_addr_load(p, map_addr);
if (deref) {
map_val = lb_emit_load(p, map_val);
}
lbValue key = lb_build_expr(p, ie->index);
key = lb_emit_conv(p, key, t->Map.key);
Type *result_type = type_of_expr(expr);
lbValue map_ptr = lb_address_from_load_or_generate_local(p, map_val);
return lb_addr_map(map_ptr, key, t, result_type);
}
switch (t->kind) {
case Type_Array: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
if (deref) {
array = lb_emit_load(p, array);
}
lbValue index = lb_build_expr(p, ie->index);
index = lb_emit_conv(p, index, t_int);
lbValue elem = lb_emit_array_ep(p, array, index);
auto index_tv = type_and_value_of_expr(ie->index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->Array.count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_EnumeratedArray: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
if (deref) {
array = lb_emit_load(p, array);
}
Type *index_type = t->EnumeratedArray.index;
auto index_tv = type_and_value_of_expr(ie->index);
lbValue index = {};
if (compare_exact_values(Token_NotEq, *t->EnumeratedArray.min_value, exact_value_i64(0))) {
if (index_tv.mode == Addressing_Constant) {
ExactValue idx = exact_value_sub(index_tv.value, *t->EnumeratedArray.min_value);
index = lb_const_value(p->module, index_type, idx);
} else {
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
index = lb_emit_arith(p, Token_Sub, index, lb_const_value(p->module, index_type, *t->EnumeratedArray.min_value), index_type);
}
} else {
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
}
lbValue elem = lb_emit_array_ep(p, array, index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->EnumeratedArray.count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_Slice: {
lbValue slice = {};
slice = lb_build_expr(p, ie->expr);
if (deref) {
slice = lb_emit_load(p, slice);
}
lbValue elem = lb_slice_elem(p, slice);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lbValue len = lb_slice_len(p, slice);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_MultiPointer: {
lbValue multi_ptr = {};
multi_ptr = lb_build_expr(p, ie->expr);
if (deref) {
multi_ptr = lb_emit_load(p, multi_ptr);
}
lbValue index = lb_build_expr(p, ie->index);
lbValue v = {};
LLVMValueRef indices[1] = {index.value};
v.value = LLVMBuildGEP2(p->builder, lb_type(p->module, t->MultiPointer.elem), multi_ptr.value, indices, 1, "foo");
v.type = alloc_type_pointer(t->MultiPointer.elem);
return lb_addr(v);
}
case Type_RelativeSlice: {
lbAddr slice_addr = {};
if (deref) {
slice_addr = lb_addr(lb_build_expr(p, ie->expr));
} else {
slice_addr = lb_build_addr(p, ie->expr);
}
lbValue slice = lb_addr_load(p, slice_addr);
lbValue elem = lb_slice_elem(p, slice);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lbValue len = lb_slice_len(p, slice);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_DynamicArray: {
lbValue dynamic_array = {};
dynamic_array = lb_build_expr(p, ie->expr);
if (deref) {
dynamic_array = lb_emit_load(p, dynamic_array);
}
lbValue elem = lb_dynamic_array_elem(p, dynamic_array);
lbValue len = lb_dynamic_array_len(p, dynamic_array);
lbValue index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
lbValue v = lb_emit_ptr_offset(p, elem, index);
return lb_addr(v);
}
case Type_Matrix: {
lbValue matrix = {};
matrix = lb_build_addr_ptr(p, ie->expr);
if (deref) {
matrix = lb_emit_load(p, matrix);
}
lbValue index = lb_build_expr(p, ie->index);
index = lb_emit_conv(p, index, t_int);
lbValue elem = lb_emit_matrix_ep(p, matrix, lb_const_int(p->module, t_int, 0), index);
elem = lb_emit_conv(p, elem, alloc_type_pointer(type_of_expr(expr)));
auto index_tv = type_and_value_of_expr(ie->index);
if (index_tv.mode != Addressing_Constant) {
lbValue len = lb_const_int(p->module, t_int, t->Matrix.column_count);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
}
return lb_addr(elem);
}
case Type_Basic: { // Basic_string
lbValue str;
lbValue elem;
lbValue len;
lbValue index;
str = lb_build_expr(p, ie->expr);
if (deref) {
str = lb_emit_load(p, str);
}
elem = lb_string_elem(p, str);
len = lb_string_len(p, str);
index = lb_emit_conv(p, lb_build_expr(p, ie->index), t_int);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
return lb_addr(lb_emit_ptr_offset(p, elem, index));
}
}
return lb_build_addr_index_expr(p, expr);
case_end;
case_ast_node(ie, MatrixIndexExpr, expr);
@@ -4399,198 +4604,7 @@ lbAddr lb_build_addr_internal(lbProcedure *p, Ast *expr) {
case_end;
case_ast_node(se, SliceExpr, expr);
lbValue low = lb_const_int(p->module, t_int, 0);
lbValue high = {};
if (se->low != nullptr) {
low = lb_correct_endianness(p, lb_build_expr(p, se->low));
}
if (se->high != nullptr) {
high = lb_correct_endianness(p, lb_build_expr(p, se->high));
}
bool no_indices = se->low == nullptr && se->high == nullptr;
lbAddr addr = lb_build_addr(p, se->expr);
lbValue base = lb_addr_load(p, addr);
Type *type = base_type(base.type);
if (is_type_pointer(type)) {
type = base_type(type_deref(type));
addr = lb_addr(base);
base = lb_addr_load(p, addr);
}
switch (type->kind) {
case Type_Slice: {
Type *slice_type = type;
lbValue len = lb_slice_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_slice_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_RelativeSlice:
GB_PANIC("TODO(bill): Type_RelativeSlice should be handled above already on the lb_addr_load");
break;
case Type_DynamicArray: {
Type *elem_type = type->DynamicArray.elem;
Type *slice_type = alloc_type_slice(elem_type);
lbValue len = lb_dynamic_array_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_dynamic_array_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_MultiPointer: {
lbAddr res = lb_add_local_generated(p, type_of_expr(expr), false);
if (se->high == nullptr) {
lbValue offset = base;
LLVMValueRef indices[1] = {low.value};
offset.value = LLVMBuildGEP2(p->builder, lb_type(p->module, offset.type->MultiPointer.elem), offset.value, indices, 1, "");
lb_addr_store(p, res, offset);
} else {
low = lb_emit_conv(p, low, t_int);
high = lb_emit_conv(p, high, t_int);
lb_emit_multi_pointer_slice_bounds_check(p, se->open, low, high);
LLVMValueRef indices[1] = {low.value};
LLVMValueRef ptr = LLVMBuildGEP2(p->builder, lb_type(p->module, base.type->MultiPointer.elem), base.value, indices, 1, "");
LLVMValueRef len = LLVMBuildSub(p->builder, high.value, low.value, "");
LLVMValueRef gep0 = lb_emit_struct_ep(p, res.addr, 0).value;
LLVMValueRef gep1 = lb_emit_struct_ep(p, res.addr, 1).value;
LLVMBuildStore(p->builder, ptr, gep0);
LLVMBuildStore(p->builder, len, gep1);
}
return res;
}
case Type_Array: {
Type *slice_type = alloc_type_slice(type->Array.elem);
lbValue len = lb_const_int(p->module, t_int, type->Array.count);
if (high.value == nullptr) high = len;
bool low_const = type_and_value_of_expr(se->low).mode == Addressing_Constant;
bool high_const = type_and_value_of_expr(se->high).mode == Addressing_Constant;
if (!low_const || !high_const) {
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
}
lbValue elem = lb_emit_ptr_offset(p, lb_array_elem(p, lb_addr_get_ptr(p, addr)), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_Basic: {
GB_ASSERT(type == t_string);
lbValue len = lb_string_len(p, base);
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
lbValue elem = lb_emit_ptr_offset(p, lb_string_elem(p, base), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr str = lb_add_local_generated(p, t_string, false);
lb_fill_string(p, str, elem, new_len);
return str;
}
case Type_Struct:
if (is_type_soa_struct(type)) {
lbValue len = lb_soa_struct_len(p, lb_addr_get_ptr(p, addr));
if (high.value == nullptr) high = len;
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
#if 1
lbAddr dst = lb_add_local_generated(p, type_of_expr(expr), true);
if (type->Struct.soa_kind == StructSoa_Fixed) {
i32 field_count = cast(i32)type->Struct.fields.count;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ep(p, lb_addr_get_ptr(p, addr), i);
field_src = lb_emit_array_ep(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
} else if (type->Struct.soa_kind == StructSoa_Slice) {
if (no_indices) {
lb_addr_store(p, dst, base);
} else {
i32 field_count = cast(i32)type->Struct.fields.count - 1;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ev(p, base, i);
field_src = lb_emit_ptr_offset(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
}
} else if (type->Struct.soa_kind == StructSoa_Dynamic) {
i32 field_count = cast(i32)type->Struct.fields.count - 3;
for (i32 i = 0; i < field_count; i++) {
lbValue field_dst = lb_emit_struct_ep(p, dst.addr, i);
lbValue field_src = lb_emit_struct_ev(p, base, i);
field_src = lb_emit_ptr_offset(p, field_src, low);
lb_emit_store(p, field_dst, field_src);
}
lbValue len_dst = lb_emit_struct_ep(p, dst.addr, field_count);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lb_emit_store(p, len_dst, new_len);
}
return dst;
#endif
}
break;
}
GB_PANIC("Unknown slicable type");
return lb_build_addr_slice_expr(p, expr);
case_end;
case_ast_node(de, DerefExpr, expr);