Struct rustc_mir_transform::simplify::CfgSimplifier
source · pub struct CfgSimplifier<'a, 'tcx> {
basic_blocks: &'a mut IndexVec<BasicBlock, BasicBlockData<'tcx>>,
pred_count: IndexVec<BasicBlock, u32>,
}
Fields
basic_blocks: &'a mut IndexVec<BasicBlock, BasicBlockData<'tcx>>
pred_count: IndexVec<BasicBlock, u32>
Implementations
sourceimpl<'a, 'tcx> CfgSimplifier<'a, 'tcx>
impl<'a, 'tcx> CfgSimplifier<'a, 'tcx>
pub fn new(body: &'a mut Body<'tcx>) -> Self
pub fn simplify(self)
sourcefn take_terminator_if_simple_goto(
&mut self,
bb: BasicBlock
) -> Option<Terminator<'tcx>>
fn take_terminator_if_simple_goto(
&mut self,
bb: BasicBlock
) -> Option<Terminator<'tcx>>
This function will return None
if
- the block has statements
- the block has a terminator other than
goto
- the block has no terminator (meaning some other part of the current optimization stole it)
sourcefn collapse_goto_chain(&mut self, start: &mut BasicBlock, changed: &mut bool)
fn collapse_goto_chain(&mut self, start: &mut BasicBlock, changed: &mut bool)
Collapse a goto chain starting from start
fn merge_successor(
&mut self,
merged_blocks: &mut Vec<BasicBlock>,
terminator: &mut Terminator<'tcx>
) -> bool
fn simplify_branch(&mut self, terminator: &mut Terminator<'tcx>) -> bool
fn strip_nops(&mut self)
Auto Trait Implementations
impl<'a, 'tcx> !RefUnwindSafe for CfgSimplifier<'a, 'tcx>
impl<'a, 'tcx> !Send for CfgSimplifier<'a, 'tcx>
impl<'a, 'tcx> !Sync for CfgSimplifier<'a, 'tcx>
impl<'a, 'tcx> Unpin for CfgSimplifier<'a, 'tcx>where
'tcx: 'a,
impl<'a, 'tcx> !UnwindSafe for CfgSimplifier<'a, 'tcx>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Layout
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.
Size: 32 bytes