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wasm_interp: use copy_from_slice instead of write_all

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Brian Carroll 2022-11-25 19:41:19 +00:00
parent 54305dd182
commit a593d19b2d
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GPG key ID: 5C7B2EC4101703C0
1 changed files with 19 additions and 22 deletions
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41
crates/wasm_interp/src/execute.rs
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@ -1,6 +1,5 @@
use bumpalo::{collections::Vec, Bump}; use bumpalo::{collections::Vec, Bump};
use std::fmt; use std::fmt::{self, Write};
use std::io::Write;
use std::iter; use std::iter;
use roc_wasm_module::opcodes::OpCode; use roc_wasm_module::opcodes::OpCode;
@ -124,7 +123,6 @@ impl<'a> ExecutionState<'a> {
} }
fn fetch_immediate_u32(&mut self, module: &WasmModule<'a>) -> u32 { fn fetch_immediate_u32(&mut self, module: &WasmModule<'a>) -> u32 {
use std::fmt::Write;
let x = u32::parse((), &module.code.bytes, &mut self.program_counter).unwrap(); let x = u32::parse((), &module.code.bytes, &mut self.program_counter).unwrap();
if let Some(debug_string) = self.debug_string.as_mut() { if let Some(debug_string) = self.debug_string.as_mut() {
write!(debug_string, "{}", x).unwrap(); write!(debug_string, "{}", x).unwrap();
@ -171,7 +169,6 @@ impl<'a> ExecutionState<'a> {
} }
fn write_debug<T: fmt::Debug>(&mut self, value: T) { fn write_debug<T: fmt::Debug>(&mut self, value: T) {
use fmt::Write;
if let Some(debug_string) = self.debug_string.as_mut() { if let Some(debug_string) = self.debug_string.as_mut() {
std::write!(debug_string, "{:?} ", value).unwrap(); std::write!(debug_string, "{:?} ", value).unwrap();
} }
@ -376,56 +373,56 @@ impl<'a> ExecutionState<'a> {
I32STORE => { I32STORE => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i32(); let unwrapped = value.unwrap_i32();
let mut target = &mut self.memory[addr..][..4]; let target = &mut self.memory[addr..][..4];
target.write_all(&unwrapped.to_le_bytes()).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes());
} }
I64STORE => { I64STORE => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i64(); let unwrapped = value.unwrap_i64();
let mut target = &mut self.memory[addr..][..8]; let target = &mut self.memory[addr..][..8];
target.write_all(&unwrapped.to_le_bytes()).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes());
} }
F32STORE => { F32STORE => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_f32(); let unwrapped = value.unwrap_f32();
let mut target = &mut self.memory[addr..][..4]; let target = &mut self.memory[addr..][..4];
target.write_all(&unwrapped.to_le_bytes()).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes());
} }
F64STORE => { F64STORE => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_f64(); let unwrapped = value.unwrap_f64();
let mut target = &mut self.memory[addr..][..8]; let target = &mut self.memory[addr..][..8];
target.write_all(&unwrapped.to_le_bytes()).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes());
} }
I32STORE8 => { I32STORE8 => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i32(); let unwrapped = value.unwrap_i32();
let mut target = &mut self.memory[addr..][..1]; let target = &mut self.memory[addr..][..1];
target.write_all(&unwrapped.to_le_bytes()[..1]).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes()[..1]);
} }
I32STORE16 => { I32STORE16 => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i32(); let unwrapped = value.unwrap_i32();
let mut target = &mut self.memory[addr..][..2]; let target = &mut self.memory[addr..][..2];
target.write_all(&unwrapped.to_le_bytes()[..2]).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes()[..2]);
} }
I64STORE8 => { I64STORE8 => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i64(); let unwrapped = value.unwrap_i64();
let mut target = &mut self.memory[addr..][..1]; let target = &mut self.memory[addr..][..1];
target.write_all(&unwrapped.to_le_bytes()[..1]).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes()[..1]);
} }
I64STORE16 => { I64STORE16 => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i64(); let unwrapped = value.unwrap_i64();
let mut target = &mut self.memory[addr..][..2]; let target = &mut self.memory[addr..][..2];
target.write_all(&unwrapped.to_le_bytes()[..2]).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes()[..2]);
} }
I64STORE32 => { I64STORE32 => {
let (addr, value) = self.get_store_addr_value(module); let (addr, value) = self.get_store_addr_value(module);
let unwrapped = value.unwrap_i64(); let unwrapped = value.unwrap_i64();
let mut target = &mut self.memory[addr..][..4]; let target = &mut self.memory[addr..][..4];
target.write_all(&unwrapped.to_le_bytes()[..4]).unwrap(); target.copy_from_slice(&unwrapped.to_le_bytes()[..4]);
} }
CURRENTMEMORY => { CURRENTMEMORY => {
let size = self.memory.len() as i32 / MemorySection::PAGE_SIZE as i32; let size = self.memory.len() as i32 / MemorySection::PAGE_SIZE as i32;