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Use new cast methods

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This commit is contained in:
Jannis Christopher Köhl 2022-10-26 14:46:27 +02:00
parent 630e17d3e4
commit b478fcf270
1 changed files with 15 additions and 12 deletions
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27
compiler/rustc_mir_transform/src/dataflow_const_prop.rs
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@ -128,23 +128,26 @@ impl<'tcx> ValueAnalysis<'tcx> for ConstAnalysis<'tcx> {
) -> ValueOrPlaceOrRef<Self::Value> {
match rvalue {
Rvalue::Cast(
CastKind::IntToInt
kind @ (CastKind::IntToInt
| CastKind::FloatToInt
| CastKind::FloatToFloat
| CastKind::IntToFloat,
| CastKind::IntToFloat),
operand,
ty,
) => {
let operand = self.eval_operand(operand, state);
match operand {
FlatSet::Elem(operand) => self
.ecx
.misc_cast(&operand, *ty)
.map(|result| ValueOrPlaceOrRef::Value(self.wrap_immediate(result, *ty)))
.unwrap_or(ValueOrPlaceOrRef::top()),
_ => ValueOrPlaceOrRef::top(),
) => match self.eval_operand(operand, state) {
FlatSet::Elem(op) => match kind {
CastKind::IntToInt | CastKind::IntToFloat => {
self.ecx.int_to_int_or_float(&op, *ty)
}
CastKind::FloatToInt | CastKind::FloatToFloat => {
self.ecx.float_to_float_or_int(&op, *ty)
}
_ => unreachable!(),
}
}
.map(|result| ValueOrPlaceOrRef::Value(self.wrap_immediate(result, *ty)))
.unwrap_or(ValueOrPlaceOrRef::top()),
_ => ValueOrPlaceOrRef::top(),
},
Rvalue::BinaryOp(op, box (left, right)) => {
// Overflows must be ignored here.
let (val, _overflow) = self.binary_op(state, *op, left, right);