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Promote unchecked_add/sub/mul/shl/shr to mir::BinOp

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This commit is contained in:
Scott McMurray 2023-06-03 00:41:50 -07:00
parent 8d1fa473dd
commit 39788e07ba
36 changed files with 504 additions and 215 deletions
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13
compiler/rustc_middle/src/mir/syntax.rs
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@ -1267,10 +1267,16 @@ pub enum UnOp {
pub enum BinOp {
/// The `+` operator (addition)
Add,
/// Like `Add`, but with UB on overflow. (Integers only.)
AddUnchecked,
/// The `-` operator (subtraction)
Sub,
/// Like `Sub`, but with UB on overflow. (Integers only.)
SubUnchecked,
/// The `*` operator (multiplication)
Mul,
/// Like `Mul`, but with UB on overflow. (Integers only.)
MulUnchecked,
/// The `/` operator (division)
///
/// For integer types, division by zero is UB, as is `MIN / -1` for signed.
@ -1296,10 +1302,17 @@ pub enum BinOp {
///
/// The offset is truncated to the size of the first operand before shifting.
Shl,
/// Like `Shl`, but is UB if the RHS >= LHS::BITS
ShlUnchecked,
/// The `>>` operator (shift right)
///
/// The offset is truncated to the size of the first operand before shifting.
///
/// This is an arithmetic shift if the LHS is signed
/// and a logical shift if the LHS is unsigned.
Shr,
/// Like `Shl`, but is UB if the RHS >= LHS::BITS
ShrUnchecked,
/// The `==` operator (equality)
Eq,
/// The `<` operator (less than)