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Calculate size and alignment, and reuse memory for all variadic calls within a procedure body

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This commit is contained in:
gingerBill
2024-07-14 13:44:47 +01:00
parent 0a530b5ce8
commit 6959554040
5 changed files with 34 additions and 12 deletions
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src/llvm_backend_proc.cpp
+17 -8
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@@ -3456,39 +3456,48 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
}
isize slice_len = var_args.count;
if (slice_len > 0) {
lbAddr base_array = {};
lbAddr slice = {};
for (auto const &vr : p->variadic_reuses) {
if (are_types_identical(vr.slice_type, slice_type)) {
base_array = vr.base_array;
slice = vr.slice_addr;
break;
}
}
DeclInfo *d = decl_info_of_entity(p->entity);
if (d != nullptr && base_array.addr.value == nullptr) {
if (d != nullptr && slice.addr.value == nullptr) {
for (auto const &vr : d->variadic_reuses) {
if (are_types_identical(vr.slice_type, slice_type)) {
base_array = lb_add_local_generated(p, alloc_type_array(elem_type, vr.max_count), true);
slice = lb_add_local_generated(p, slice_type, true);
array_add(&p->variadic_reuses, lbVariadicReuseData{slice_type, base_array, slice});
array_add(&p->variadic_reuses, lbVariadicReuseSlices{slice_type, slice});
break;
}
}
}
GB_ASSERT(base_array.addr.value != nullptr);
lbValue base_array_ptr = p->variadic_reuse_base_array_ptr.addr;
if (d != nullptr && base_array_ptr.value == nullptr) {
i64 max_bytes = d->variadic_reuse_max_bytes;
i64 max_align = gb_max(d->variadic_reuse_max_align, 16);
p->variadic_reuse_base_array_ptr = lb_add_local_generated(p, alloc_type_array(t_u8, max_bytes), true);
lb_try_update_alignment(p->variadic_reuse_base_array_ptr.addr, cast(unsigned)max_align);
base_array_ptr = p->variadic_reuse_base_array_ptr.addr;
}
GB_ASSERT(base_array_ptr.value != nullptr);
GB_ASSERT(slice.addr.value != nullptr);
base_array_ptr = lb_emit_conv(p, base_array_ptr, alloc_type_pointer(alloc_type_array(elem_type, slice_len)));
for (isize i = 0; i < var_args.count; i++) {
lbValue addr = lb_emit_array_epi(p, base_array.addr, cast(i32)i);
lbValue addr = lb_emit_array_epi(p, base_array_ptr, cast(i32)i);
lbValue var_arg = var_args[i];
var_arg = lb_emit_conv(p, var_arg, elem_type);
lb_emit_store(p, addr, var_arg);
}
lbValue base_elem = lb_emit_array_epi(p, base_array.addr, 0);
lbValue base_elem = lb_emit_array_epi(p, base_array_ptr, 0);
lbValue len = lb_const_int(p->module, t_int, slice_len);
lb_fill_slice(p, slice, base_elem, len);