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document BinOp behavior quirks in the corresponding enum

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Ralf Jung 2021-11-23 20:30:26 -05:00
parent 94c9c22b39
commit 5f6ccf6121
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8
compiler/rustc_middle/src/mir/mod.rs
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@ -2246,8 +2246,12 @@ pub enum BinOp {
/// The `*` operator (multiplication)
Mul,
/// The `/` operator (division)
///
/// Division by zero is UB.
Div,
/// The `%` operator (modulus)
///
/// Using zero as the modulus (second operand) is UB.
Rem,
/// The `^` operator (bitwise xor)
BitXor,
@ -2256,8 +2260,12 @@ pub enum BinOp {
/// The `|` operator (bitwise or)
BitOr,
/// The `<<` operator (shift left)
///
/// The offset is truncated to the size of the first operand before shifting.
Shl,
/// The `>>` operator (shift right)
///
/// The offset is truncated to the size of the first operand before shifting.
Shr,
/// The `==` operator (equality)
Eq,