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Treat StatementKind::Coverage as completely opaque for SMIR purposes

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Coverage statements in MIR are heavily tied to internal details of the coverage
implementation that are likely to change, and are unlikely to be useful to
third-party tools for the foreseeable future.
This commit is contained in:
Zalathar 2023-08-22 20:30:19 +10:00
parent b4d09f3b81
commit 1fac8a0eab
2 changed files with 5 additions and 94 deletions
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56
compiler/rustc_smir/src/rustc_smir/mod.rs
View File

@ -14,7 +14,6 @@ use crate::stable_mir::ty::{
};
use crate::stable_mir::{self, Context};
use rustc_hir as hir;
use rustc_middle::mir::coverage::CodeRegion;
use rustc_middle::mir::interpret::alloc_range;
use rustc_middle::mir::{self, ConstantKind};
use rustc_middle::ty::{self, Ty, TyCtxt, Variance};
@ -168,10 +167,7 @@ impl<'tcx> Stable<'tcx> for mir::Statement<'tcx> {
variance: variance.stable(tables),
}
}
Coverage(coverage) => stable_mir::mir::Statement::Coverage(stable_mir::mir::Coverage {
kind: coverage.kind.stable(tables),
code_region: coverage.code_region.as_ref().map(|reg| reg.stable(tables)),
}),
Coverage(coverage) => stable_mir::mir::Statement::Coverage(opaque(coverage)),
Intrinsic(intrinstic) => {
stable_mir::mir::Statement::Intrinsic(intrinstic.stable(tables))
}
@ -472,30 +468,6 @@ impl<'tcx> Stable<'tcx> for mir::Place<'tcx> {
}
}
impl<'tcx> Stable<'tcx> for mir::coverage::CoverageKind {
type T = stable_mir::mir::CoverageKind;
fn stable(&self, tables: &mut Tables<'tcx>) -> Self::T {
use rustc_middle::mir::coverage::CoverageKind;
match self {
CoverageKind::Counter { function_source_hash, id } => {
stable_mir::mir::CoverageKind::Counter {
function_source_hash: *function_source_hash as usize,
id: opaque(id),
}
}
CoverageKind::Expression { id, lhs, op, rhs } => {
stable_mir::mir::CoverageKind::Expression {
id: opaque(id),
lhs: opaque(lhs),
op: op.stable(tables),
rhs: opaque(rhs),
}
}
CoverageKind::Unreachable => stable_mir::mir::CoverageKind::Unreachable,
}
}
}
impl<'tcx> Stable<'tcx> for mir::UserTypeProjection {
type T = stable_mir::mir::UserTypeProjection;
@ -504,18 +476,6 @@ impl<'tcx> Stable<'tcx> for mir::UserTypeProjection {
}
}
impl<'tcx> Stable<'tcx> for mir::coverage::Op {
type T = stable_mir::mir::Op;
fn stable(&self, _: &mut Tables<'tcx>) -> Self::T {
use rustc_middle::mir::coverage::Op::*;
match self {
Subtract => stable_mir::mir::Op::Subtract,
Add => stable_mir::mir::Op::Add,
}
}
}
impl<'tcx> Stable<'tcx> for mir::Local {
type T = stable_mir::mir::Local;
fn stable(&self, _: &mut Tables<'tcx>) -> Self::T {
@ -562,20 +522,6 @@ impl<'tcx> Stable<'tcx> for ty::UserTypeAnnotationIndex {
}
}
impl<'tcx> Stable<'tcx> for CodeRegion {
type T = stable_mir::mir::CodeRegion;
fn stable(&self, _: &mut Tables<'tcx>) -> Self::T {
stable_mir::mir::CodeRegion {
file_name: self.file_name.as_str().to_string(),
start_line: self.start_line as usize,
start_col: self.start_col as usize,
end_line: self.end_line as usize,
end_col: self.end_col as usize,
}
}
}
impl<'tcx> Stable<'tcx> for mir::UnwindAction {
type T = stable_mir::mir::UnwindAction;
fn stable(&self, _: &mut Tables<'tcx>) -> Self::T {

43
compiler/rustc_smir/src/stable_mir/mir/body.rs
View File

@ -135,9 +135,10 @@ pub enum AsyncGeneratorKind {
}
pub(crate) type LocalDefId = Opaque;
pub(crate) type CounterValueReference = Opaque;
pub(crate) type InjectedExpressionId = Opaque;
pub(crate) type ExpressionOperandId = Opaque;
/// [`rustc_middle::mir::Coverage`] is heavily tied to internal details of the
/// coverage implementation that are likely to change, and are unlikely to be
/// useful to third-party tools for the foreseeable future.
pub(crate) type Coverage = Opaque;
/// The FakeReadCause describes the type of pattern why a FakeRead statement exists.
#[derive(Clone, Debug)]
@ -166,42 +167,6 @@ pub enum Variance {
Bivariant,
}
#[derive(Clone, Debug)]
pub enum Op {
Subtract,
Add,
}
#[derive(Clone, Debug)]
pub enum CoverageKind {
Counter {
function_source_hash: usize,
id: CounterValueReference,
},
Expression {
id: InjectedExpressionId,
lhs: ExpressionOperandId,
op: Op,
rhs: ExpressionOperandId,
},
Unreachable,
}
#[derive(Clone, Debug)]
pub struct CodeRegion {
pub file_name: String,
pub start_line: usize,
pub start_col: usize,
pub end_line: usize,
pub end_col: usize,
}
#[derive(Clone, Debug)]
pub struct Coverage {
pub kind: CoverageKind,
pub code_region: Option<CodeRegion>,
}
#[derive(Clone, Debug)]
pub struct CopyNonOverlapping {
pub src: Operand,