T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

peepmatic: Save RHS actions as a boxed slice, not vec

Browse Source 
A boxed slice is only two words, while a vec is three words. This should cut
down on the memory size of our automata and improve cache usage.
This commit is contained in:
Nick Fitzgerald
2020-05-07 14:14:21 -07:00
parent 210b036320
commit eb2dab0aa4
4 changed files with 44 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
cranelift/peepmatic/src/automatize.rs
View File

@@ -6,10 +6,10 @@ use peepmatic_runtime::linear;
/// Construct an automaton from a set of linear optimizations.
pub fn automatize(
opts: &linear::Optimizations,
) -> Automaton<linear::MatchResult, linear::MatchOp, Vec<linear::Action>> {
) -> Automaton<linear::MatchResult, linear::MatchOp, Box<[linear::Action]>> {
debug_assert!(crate::linear_passes::is_sorted_lexicographically(opts));
let mut builder = Builder::<linear::MatchResult, linear::MatchOp, Vec<linear::Action>>::new();
let mut builder = Builder::<linear::MatchResult, linear::MatchOp, Box<[linear::Action]>>::new();
for opt in &opts.optimizations {
let mut insertion = builder.insert();
@@ -22,7 +22,7 @@ pub fn automatize(
insertion.set_state_data(inc.operation);
}
insertion.next(inc.expected, inc.actions.clone());
insertion.next(inc.expected, inc.actions.clone().into_boxed_slice());
}
insertion.finish();
}