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Make 16 simple hasher cases for small types

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This commit is contained in:
gingerBill
2020-11-29 18:17:21 +00:00
parent 9e13416312
commit f06f33872c
4 changed files with 55 additions and 59 deletions
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core/runtime/dynamic_map_internal.odin
+15 -1
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@@ -77,7 +77,7 @@ default_hash_ptr :: inline proc "contextless" (data: rawptr, size: int) -> uintp
}
@(private)
_default_hasher_const :: inline proc "contextless" (data: rawptr, seed: uintptr, $N: uint) -> uintptr {
_default_hasher_const :: inline proc "contextless" (data: rawptr, seed: uintptr, $N: uint) -> uintptr where N <= 16 {
h := u64(seed) + 0xcbf29ce484222325;
p := uintptr(data);
inline for _ in 0..<N {
@@ -99,11 +99,25 @@ default_hasher_n :: inline proc "contextless" (data: rawptr, seed: uintptr, N: i
return uintptr(h);
}
// NOTE(bill): There are loads of predefined ones to improve optimizations for small types
default_hasher1 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 1); }
default_hasher2 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 2); }
default_hasher3 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 3); }
default_hasher4 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 4); }
default_hasher5 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 5); }
default_hasher6 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 6); }
default_hasher7 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 7); }
default_hasher8 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 8); }
default_hasher9 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 9); }
default_hasher10 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 10); }
default_hasher11 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 11); }
default_hasher12 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 12); }
default_hasher13 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 13); }
default_hasher14 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 14); }
default_hasher15 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 15); }
default_hasher16 :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr { return inline _default_hasher_const(data, seed, 16); }
default_hasher_string :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr {
h := u64(seed) + 0xcbf29ce484222325;
str := (^[]byte)(data)^;