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Auto merge of #119627 - oli-obk:const_prop_lint_n̵o̵n̵sense, r=cjgillot

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Remove all ConstPropNonsense

We track all locals and projections on them ourselves within the const propagator and only use the InterpCx to actually do some low level operations or read from constants (via `OpTy` we get for said constants).

This helps moving the const prop lint out from the normal pipeline and running it just based on borrowck information. This in turn allows us to make progress on https://github.com/rust-lang/rust/pull/108730#issuecomment-1875557745

there are various follow up cleanups that can be done after this PR (e.g. not matching on Rvalue twice and doing binop checks twice), but lets try landing this one first.

r? `@RalfJung`
This commit is contained in:
bors
2024-01-25 03:16:07 +00:00
parent 7ffc697ce1 1c9e621308
commit 68411c9554
14 changed files with 404 additions and 437 deletions
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4
compiler/rustc_const_eval/src/util/mod.rs
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@@ -14,7 +14,7 @@ pub use self::type_name::type_name;
/// Classify whether an operator is "left-homogeneous", i.e., the LHS has the
/// same type as the result.
#[inline]
pub(crate) fn binop_left_homogeneous(op: mir::BinOp) -> bool {
pub fn binop_left_homogeneous(op: mir::BinOp) -> bool {
use rustc_middle::mir::BinOp::*;
match op {
Add | AddUnchecked | Sub | SubUnchecked | Mul | MulUnchecked | Div | Rem | BitXor
@@ -26,7 +26,7 @@ pub(crate) fn binop_left_homogeneous(op: mir::BinOp) -> bool {
/// Classify whether an operator is "right-homogeneous", i.e., the RHS has the
/// same type as the LHS.
#[inline]
pub(crate) fn binop_right_homogeneous(op: mir::BinOp) -> bool {
pub fn binop_right_homogeneous(op: mir::BinOp) -> bool {
use rustc_middle::mir::BinOp::*;
match op {
Add | AddUnchecked | Sub | SubUnchecked | Mul | MulUnchecked | Div | Rem | BitXor