mirrors/Odin
1
0
Fork 0
mirror of https://github.com/odin-lang/Odin.git synced 2026-06-06 18:54:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

Simplify hashing approach map

Browse Source
This commit is contained in:
gingerBill
2020-11-29 15:50:29 +00:00
parent 97c66c9c73
commit 1dfe0cdd1d
6 changed files with 51 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
src/llvm_backend.cpp
View File

@@ -9286,6 +9286,12 @@ lbValue lb_get_hasher_proc_for_type(lbModule *m, Type *type) {
type_set_offsets(type);
GB_PANIC("Type_Struct");
} else if (is_type_cstring(type)) {
auto args = array_make<lbValue>(permanent_allocator(), 2);
args[0] = data;
args[1] = seed;
lbValue res = lb_emit_runtime_call(p, "default_hasher_cstring", args);
LLVMBuildRet(p->builder, res.value);
} else if (is_type_string(type)) {
auto args = array_make<lbValue>(permanent_allocator(), 2);
args[0] = data;
@@ -10375,37 +10381,17 @@ lbValue lb_gen_map_key(lbProcedure *p, lbValue key, Type *key_type) {
Type *t = base_type(key.type);
key = lb_emit_conv(p, key, key_type);
if (is_type_string(t)) {
lbValue str = lb_emit_conv(p, key, t_string);
lbValue hashed_str = {};
if (lb_is_const(str)) {
String v = lb_get_const_string(p->module, str);
u64 hs = fnv64a(v.text, v.len);
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;
hashed_str = lb_emit_runtime_call(p, "default_hash_string", args);
}
lb_emit_store(p, lb_emit_struct_ep(p, vp, 0), hashed_str);
} else {
i64 sz = type_size_of(t);
GB_ASSERT(sz <= 8);
if (sz != 0) {
auto args = array_make<lbValue>(permanent_allocator(), 2);
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);
}
}
lbValue key_ptr = lb_address_from_load_or_generate_local(p, key);
key_ptr = lb_emit_conv(p, key_ptr, t_rawptr);
lbValue hasher = lb_get_hasher_proc_for_type(p->module, key_type);
auto args = array_make<lbValue>(permanent_allocator(), 2);
args[0] = key_ptr;
args[1] = lb_const_int(p->module, t_uintptr, 0);
lbValue hashed_key = lb_emit_call(p, hasher, args);
lb_emit_store(p, lb_emit_struct_ep(p, vp, 0), hashed_key);
lb_emit_store(p, lb_emit_struct_ep(p, vp, 1), key_ptr);
return lb_addr_load(p, v);