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Change memory layout of map to be 3 words smaller

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This commit is contained in:
gingerBill
2018-08-30 19:14:10 +01:00
parent e0240c186f
commit aa542980ce
12 changed files with 114 additions and 44 deletions
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src/ir.cpp
+15 -19
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@@ -2768,6 +2768,7 @@ irValue *ir_emit_array_epi(irProcedure *proc, irValue *s, i32 index) {
irValue *ir_emit_struct_ep(irProcedure *proc, irValue *s, i32 index) {
gbAllocator a = ir_allocator();
GB_ASSERT(is_type_pointer(ir_type(s)));
Type *t = base_type(type_deref(ir_type(s)));
Type *result_type = nullptr;
@@ -2808,18 +2809,18 @@ irValue *ir_emit_struct_ep(irProcedure *proc, irValue *s, i32 index) {
case 2: result_type = t_int_ptr; break;
case 3: result_type = t_allocator_ptr; break;
}
} /* else if (is_type_map(t)) {
} else if (is_type_map(t)) {
init_map_internal_types(t);
Type *itp = alloc_type_pointer(t->Map.internal_type);
s = ir_emit_load(proc, ir_emit_transmute(proc, s, itp));
s = ir_emit_transmute(proc, s, itp);
Type *gst = t->Map.generated_struct_type;
Type *gst = t->Map.internal_type;
GB_ASSERT(gst->kind == Type_Struct);
switch (index) {
case 0: result_type = alloc_type_pointer(gst->Struct.fields[0]->type); break;
case 1: result_type = alloc_type_pointer(gst->Struct.fields[1]->type); break;
}
} */else {
} else {
GB_PANIC("TODO(bill): struct_gep type: %s, %d", type_to_string(ir_type(s)), index);
}
@@ -2887,15 +2888,15 @@ irValue *ir_emit_struct_ev(irProcedure *proc, irValue *s, i32 index) {
}
break;
// case Type_Map: {
// init_map_internal_types(t);
// Type *gst = t->Map.generated_struct_type;
// switch (index) {
// case 0: result_type = gst->Struct.fields[0]->type; break;
// case 1: result_type = gst->Struct.fields[1]->type; break;
// }
// break;
// }
case Type_Map: {
init_map_internal_types(t);
Type *gst = t->Map.generated_struct_type;
switch (index) {
case 0: result_type = gst->Struct.fields[0]->type; break;
case 1: result_type = gst->Struct.fields[1]->type; break;
}
break;
}
default:
GB_PANIC("TODO(bill): struct_ev type: %s, %d", type_to_string(ir_type(s)), index);
@@ -2962,12 +2963,7 @@ irValue *ir_emit_deep_field_gep(irProcedure *proc, irValue *e, Selection sel) {
} else if (type->kind == Type_Array) {
e = ir_emit_array_epi(proc, e, index);
} else if (type->kind == Type_Map) {
e = ir_emit_struct_ep(proc, e, 1);
switch (index) {
case 0: e = ir_emit_struct_ep(proc, e, 1); break; // count
case 1: e = ir_emit_struct_ep(proc, e, 2); break; // capacity
case 2: e = ir_emit_struct_ep(proc, e, 3); break; // allocator
}
e = ir_emit_struct_ep(proc, e, index);
} else {
GB_PANIC("un-gep-able type %s", type_to_string(type));
}