bjoernager/rust
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Add pass to identify undefined or erroneous behaviour

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This commit is contained in:
Tomasz Miąsko 2023-12-12 00:00:00 +00:00
parent 920e0051cf
commit 7a246ddd8e
7 changed files with 95 additions and 49 deletions
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12
compiler/rustc_mir_transform/src/pass_manager.rs
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@ -2,7 +2,7 @@ use rustc_middle::mir::{self, Body, MirPhase, RuntimePhase};
use rustc_middle::ty::TyCtxt;
use rustc_session::Session;
use crate::{validate, MirPass};
use crate::{lint::lint_body, validate, MirPass};
/// Just like `MirPass`, except it cannot mutate `Body`.
pub trait MirLint<'tcx> {
@ -109,6 +109,7 @@ fn run_passes_inner<'tcx>(
phase_change: Option<MirPhase>,
validate_each: bool,
) {
let lint = tcx.sess.opts.unstable_opts.lint_mir & !body.should_skip();
let validate = validate_each & tcx.sess.opts.unstable_opts.validate_mir & !body.should_skip();
let overridden_passes = &tcx.sess.opts.unstable_opts.mir_enable_passes;
trace!(?overridden_passes);
@ -131,6 +132,9 @@ fn run_passes_inner<'tcx>(
if validate {
validate_body(tcx, body, format!("before pass {name}"));
}
if lint {
lint_body(tcx, body, format!("before pass {name}"));
}
if let Some(prof_arg) = &prof_arg {
tcx.sess
@ -147,6 +151,9 @@ fn run_passes_inner<'tcx>(
if validate {
validate_body(tcx, body, format!("after pass {name}"));
}
if lint {
lint_body(tcx, body, format!("after pass {name}"));
}
body.pass_count += 1;
}
@ -164,6 +171,9 @@ fn run_passes_inner<'tcx>(
if validate || new_phase == MirPhase::Runtime(RuntimePhase::Optimized) {
validate_body(tcx, body, format!("after phase change to {}", new_phase.name()));
}
if lint {
lint_body(tcx, body, format!("after phase change to {}", new_phase.name()));
}
body.pass_count = 1;
}