bjoernager/rust
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Remove Rvalue::CheckedBinaryOp

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This commit is contained in:
Scott McMurray 2024-05-16 02:07:31 -07:00
parent 8e78d16804
commit 95c0e5c6a8
59 changed files with 209 additions and 212 deletions
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19
compiler/rustc_middle/src/mir/syntax.rs
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@ -1295,18 +1295,12 @@ pub enum Rvalue<'tcx> {
/// truncated as needed.
/// * The `Bit*` operations accept signed integers, unsigned integers, or bools with matching
/// types and return a value of that type.
/// * The `FooWithOverflow` are like the `Foo`, but returning `(T, bool)` instead of just `T`,
/// where the `bool` is true if the result is not equal to the infinite-precision result.
/// * The remaining operations accept signed integers, unsigned integers, or floats with
/// matching types and return a value of that type.
BinaryOp(BinOp, Box<(Operand<'tcx>, Operand<'tcx>)>),
/// Same as `BinaryOp`, but yields `(T, bool)` with a `bool` indicating an error condition.
///
/// For addition, subtraction, and multiplication on integers the error condition is set when
/// the infinite precision result would not be equal to the actual result.
///
/// Other combinations of types and operators are unsupported.
CheckedBinaryOp(BinOp, Box<(Operand<'tcx>, Operand<'tcx>)>),
/// Computes a value as described by the operation.
NullaryOp(NullOp<'tcx>, Ty<'tcx>),
@ -1449,14 +1443,23 @@ pub enum BinOp {
Add,
/// Like `Add`, but with UB on overflow. (Integers only.)
AddUnchecked,
/// Like `Add`, but returns `(T, bool)` of both the wrapped result
/// and a bool indicating whether it overflowed.
AddWithOverflow,
/// The `-` operator (subtraction)
Sub,
/// Like `Sub`, but with UB on overflow. (Integers only.)
SubUnchecked,
/// Like `Sub`, but returns `(T, bool)` of both the wrapped result
/// and a bool indicating whether it overflowed.
SubWithOverflow,
/// The `*` operator (multiplication)
Mul,
/// Like `Mul`, but with UB on overflow. (Integers only.)
MulUnchecked,
/// Like `Mul`, but returns `(T, bool)` of both the wrapped result
/// and a bool indicating whether it overflowed.
MulWithOverflow,
/// The `/` operator (division)
///
/// For integer types, division by zero is UB, as is `MIN / -1` for signed.