nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-26 00:34:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Create bottom on-the-fly instead of cloning it.

Browse Source
This commit is contained in:
Camille GILLOT 2023-05-06 11:08:36 +00:00
parent 9c97abd54c
commit 760881b29d
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
compiler/rustc_mir_dataflow/src/framework/engine.rs
View File

@ -201,11 +201,12 @@ where
analysis: A,
apply_trans_for_block: Option<Box<dyn Fn(BasicBlock, &mut A::Domain)>>,
) -> Self {
let bottom_value = analysis.bottom_value(body);
let mut entry_sets = IndexVec::from_elem(bottom_value.clone(), &body.basic_blocks);
let mut entry_sets =
IndexVec::from_fn_n(|_| analysis.bottom_value(body), body.basic_blocks.len());
analysis.initialize_start_block(body, &mut entry_sets[mir::START_BLOCK]);
if A::Direction::IS_BACKWARD && entry_sets[mir::START_BLOCK] != bottom_value {
if A::Direction::IS_BACKWARD && entry_sets[mir::START_BLOCK] != analysis.bottom_value(body)
{
bug!("`initialize_start_block` is not yet supported for backward dataflow analyses");
}