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add pass_add_sub_offset

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This commit is contained in:
nora 2022-04-16 12:35:26 +02:00
parent 4490d49d35
commit 014770b6fe
4 changed files with 51 additions and 15 deletions
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18
rust2/src/codegen_interpreter.rs
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@ -6,15 +6,17 @@ const MEM_SIZE: usize = 32_000;
type Memory = [Wrapping<u8>; MEM_SIZE];
// TODO maybe repr(C) to prevent field reordering?
// `repr(C)` to make sure rustc never reorders the fields weirdly
// maybe useless, but seems to give tiny wins
#[repr(C)]
struct Interpreter<'c, W, R, P> {
code: &'c Code<'c>,
profile_collector: P,
ip: usize,
ptr: usize,
mem: Memory,
stdout: W,
stdin: R,
mem: Memory,
profile_collector: P,
}
pub fn run<W, R, P>(code: &Code<'_>, stdout: W, stdin: R, profile_collector: P)
@ -60,6 +62,16 @@ where
Stmt::Sub(n) => {
*self.elem_mut() -= n;
}
Stmt::AddOffset(o, n) => unsafe {
*self
.mem
.get_unchecked_mut((self.ptr as isize + (o as isize)) as usize) += n;
},
Stmt::SubOffset(o, n) => unsafe {
*self
.mem
.get_unchecked_mut((self.ptr as isize + (o as isize)) as usize) -= n;
},
Stmt::Right(n) => {
self.ptr += n as usize;
if self.ptr >= MEM_SIZE {