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Make hash internal key be uintptr rather than u64 to reduce entry size

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This commit is contained in:
gingerBill
2020-11-23 19:14:36 +00:00
parent b08ec005b2
commit a55568b0c4
4 changed files with 44 additions and 37 deletions
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5
src/ir.cpp
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@@ -3624,7 +3624,10 @@ irValue *ir_gen_map_hash(irProcedure *proc, irValue *key, Type *key_type) {
ExactValue ev = str->Constant.value;
GB_ASSERT(ev.kind == ExactValue_String);
u64 hs = fnv64a(ev.value_string.text, ev.value_string.len);
hashed_str = ir_value_constant(t_u64, exact_value_u64(hs));
if (build_context.word_size == 4) {
hs &= 0xffffffff;
}
hashed_str = ir_value_constant(t_uintptr, exact_value_u64(hs));
} else {
auto args = array_make<irValue *>(ir_allocator(), 1);
args[0] = str;

6
src/llvm_backend.cpp
View File

@@ -10272,7 +10272,10 @@ lbValue lb_gen_map_key(lbProcedure *p, lbValue key, Type *key_type) {
if (lb_is_const(str)) {
String v = lb_get_const_string(p->module, str);
u64 hs = fnv64a(v.text, v.len);
hashed_str = lb_const_int(p->module, t_u64, hs);
if (build_context.word_size == 4) {
hs &= 0xffffffff;
}
hashed_str = lb_const_int(p->module, t_uintptr, hs);
} else {
auto args = array_make<lbValue>(permanent_allocator(), 1);
args[0] = str;
@@ -10287,7 +10290,6 @@ lbValue lb_gen_map_key(lbProcedure *p, lbValue key, Type *key_type) {
args[0] = lb_address_from_load_or_generate_local(p, key);
args[1] = lb_const_int(p->module, t_int, sz);
lbValue hash = lb_emit_runtime_call(p, "default_hash_ptr", args);
lb_emit_store(p, lb_emit_struct_ep(p, vp, 0), hash);
}
}