bjoernager/rust
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Replace Body::basic_blocks() with field access

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This commit is contained in:
Tomasz Miąsko 2022-07-05 00:00:00 +00:00
parent 983f4daddf
commit b48870b451
65 changed files with 131 additions and 140 deletions
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4
compiler/rustc_mir_transform/src/const_goto.rs
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@ -61,14 +61,14 @@ impl<'tcx> Visitor<'tcx> for ConstGotoOptimizationFinder<'_, 'tcx> {
let _: Option<_> = try {
let target = terminator.kind.as_goto()?;
// We only apply this optimization if the last statement is a const assignment
let last_statement = self.body.basic_blocks()[location.block].statements.last()?;
let last_statement = self.body.basic_blocks[location.block].statements.last()?;
if let (place, Rvalue::Use(Operand::Constant(_const))) =
last_statement.kind.as_assign()?
{
// We found a constant being assigned to `place`.
// Now check that the target of this Goto switches on this place.
let target_bb = &self.body.basic_blocks()[target];
let target_bb = &self.body.basic_blocks[target];
// The `StorageDead(..)` statement does not affect the functionality of mir.
// We can move this part of the statement up to the predecessor.