Remove a couple of unnecessary transmute()
(#8736)
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118588ef6c
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1020560af6
@ -25,9 +25,8 @@ use seed_compute::SeedHashCompute;
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use shared::*;
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use shared::*;
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use std::io;
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use std::io;
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use std::mem;
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use std::{mem, ptr};
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use std::path::Path;
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use std::path::Path;
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use std::ptr;
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const MIX_WORDS: usize = ETHASH_MIX_BYTES / 4;
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const MIX_WORDS: usize = ETHASH_MIX_BYTES / 4;
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const MIX_NODES: usize = MIX_WORDS / NODE_WORDS;
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const MIX_NODES: usize = MIX_WORDS / NODE_WORDS;
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@ -111,7 +110,7 @@ pub fn quick_get_difficulty(header_hash: &H256, nonce: u64, mix_hash: &H256) ->
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let mut buf: [u8; 64 + 32] = mem::uninitialized();
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let mut buf: [u8; 64 + 32] = mem::uninitialized();
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ptr::copy_nonoverlapping(header_hash.as_ptr(), buf.as_mut_ptr(), 32);
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ptr::copy_nonoverlapping(header_hash.as_ptr(), buf.as_mut_ptr(), 32);
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ptr::copy_nonoverlapping(mem::transmute(&nonce), buf[32..].as_mut_ptr(), 8);
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ptr::copy_nonoverlapping(&nonce as *const u64 as *const u8, buf[32..].as_mut_ptr(), 8);
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keccak_512::unchecked(buf.as_mut_ptr(), 64, buf.as_ptr(), 40);
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keccak_512::unchecked(buf.as_mut_ptr(), 64, buf.as_ptr(), 40);
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ptr::copy_nonoverlapping(mix_hash.as_ptr(), buf[64..].as_mut_ptr(), 32);
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ptr::copy_nonoverlapping(mix_hash.as_ptr(), buf[64..].as_mut_ptr(), 32);
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@ -2,9 +2,9 @@
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extern crate crunchy;
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extern crate crunchy;
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extern crate ethereum_types;
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extern crate ethereum_types;
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use std::{hash, mem};
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use std::collections::{HashMap, HashSet};
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use ethereum_types::H256;
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use ethereum_types::H256;
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use std::collections::{HashMap, HashSet};
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use std::hash;
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/// Specialized version of `HashMap` with H256 keys and fast hashing function.
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/// Specialized version of `HashMap` with H256 keys and fast hashing function.
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pub type H256FastMap<T> = HashMap<H256, T, hash::BuildHasherDefault<PlainHasher>>;
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pub type H256FastMap<T> = HashMap<H256, T, hash::BuildHasherDefault<PlainHasher>>;
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@ -28,16 +28,13 @@ impl hash::Hasher for PlainHasher {
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#[allow(unused_assignments)]
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#[allow(unused_assignments)]
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fn write(&mut self, bytes: &[u8]) {
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fn write(&mut self, bytes: &[u8]) {
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debug_assert!(bytes.len() == 32);
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debug_assert!(bytes.len() == 32);
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let mut bytes_ptr = bytes.as_ptr();
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let mut prefix_ptr = &mut self.prefix as *mut u64 as *mut u8;
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unsafe {
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unroll! {
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let mut bytes_ptr = bytes.as_ptr();
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for _i in 0..8 {
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let prefix_u8: &mut [u8; 8] = mem::transmute(&mut self.prefix);
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unsafe {
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let mut prefix_ptr = prefix_u8.as_mut_ptr();
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unroll! {
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for _i in 0..8 {
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*prefix_ptr ^= (*bytes_ptr ^ *bytes_ptr.offset(8)) ^ (*bytes_ptr.offset(16) ^ *bytes_ptr.offset(24));
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*prefix_ptr ^= (*bytes_ptr ^ *bytes_ptr.offset(8)) ^ (*bytes_ptr.offset(16) ^ *bytes_ptr.offset(24));
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bytes_ptr = bytes_ptr.offset(1);
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bytes_ptr = bytes_ptr.offset(1);
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prefix_ptr = prefix_ptr.offset(1);
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prefix_ptr = prefix_ptr.offset(1);
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}
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}
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