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Auto merge of #126396 - fmease:rollup-3j7f6wk, r=fmease

Browse Source 
Rollup of 6 pull requests

Successful merges:

 - #126347 (Simplify `try_*`'s signature on `Iterator`)
 - #126348 (Improve error message if dependency installation in tidy fails)
 - #126366 (Add a new trait to retrieve StableMir definition Ty)
 - #126370 (compiletest: Stricter parsing of `//@ normalize-*` headers)
 - #126379 (interpret: update doc comment for find_closest_untracked_caller_location)
 - #126384 (add tracking issue for is_none_or)

Failed merges:

 - #126388 (const-eval: make lint scope computation consistent)

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2024-06-13 11:55:16 +00:00
commit 9fdbfe1441
13 changed files with 274 additions and 84 deletions
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10
compiler/rustc_const_eval/src/interpret/eval_context.rs
View File

@ -250,7 +250,7 @@ impl<'tcx, Prov: Provenance> Frame<'tcx, Prov> {
impl<'tcx, Prov: Provenance, Extra> Frame<'tcx, Prov, Extra> {
/// Get the current location within the Frame.
///
/// If this is `Left`, we are not currently executing any particular statement in
/// If this is `Right`, we are not currently executing any particular statement in
/// this frame (can happen e.g. during frame initialization, and during unwinding on
/// frames without cleanup code).
///
@ -500,6 +500,8 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
}
}
/// Returns the span of the currently executed statement/terminator.
/// This is the span typically used for error reporting.
#[inline(always)]
pub fn cur_span(&self) -> Span {
// This deliberately does *not* honor `requires_caller_location` since it is used for much
@ -507,8 +509,9 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
self.stack().last().map_or(self.tcx.span, |f| f.current_span())
}
/// Find the first stack frame that is within the current crate, if any;
/// otherwise return the crate's HirId.
#[inline(always)]
/// Find the first stack frame that is within the current crate, if any, otherwise return the crate's HirId
pub fn best_lint_scope(&self) -> hir::HirId {
self.stack()
.iter()
@ -632,7 +635,8 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
}
/// Walks up the callstack from the intrinsic's callsite, searching for the first callsite in a
/// frame which is not `#[track_caller]`. This is the fancy version of `cur_span`.
/// frame which is not `#[track_caller]`. This matches the `caller_location` intrinsic,
/// and is primarily intended for the panic machinery.
pub(crate) fn find_closest_untracked_caller_location(&self) -> Span {
for frame in self.stack().iter().rev() {
debug!("find_closest_untracked_caller_location: checking frame {:?}", frame.instance);

37
compiler/stable_mir/src/crate_def.rs
View File

@ -1,7 +1,7 @@
//! Module that define a common trait for things that represent a crate definition,
//! such as, a function, a trait, an enum, and any other definitions.
use crate::ty::Span;
use crate::ty::{GenericArgs, Span, Ty};
use crate::{with, Crate, Symbol};
/// A unique identification number for each item accessible for the current compilation unit.
@ -52,6 +52,23 @@ pub trait CrateDef {
}
}
/// A trait that can be used to retrieve a definition's type.
///
/// Note that not every CrateDef has a type `Ty`. They should not implement this trait.
pub trait CrateDefType: CrateDef {
/// Returns the type of this crate item.
fn ty(&self) -> Ty {
with(|cx| cx.def_ty(self.def_id()))
}
/// Retrieve the type of this definition by instantiating and normalizing it with `args`.
///
/// This will panic if instantiation fails.
fn ty_with_args(&self, args: &GenericArgs) -> Ty {
with(|cx| cx.def_ty_with_args(self.def_id(), args))
}
}
macro_rules! crate_def {
( $(#[$attr:meta])*
$vis:vis $name:ident $(;)?
@ -67,3 +84,21 @@ macro_rules! crate_def {
}
};
}
macro_rules! crate_def_with_ty {
( $(#[$attr:meta])*
$vis:vis $name:ident $(;)?
) => {
$(#[$attr])*
#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
$vis struct $name(pub DefId);
impl CrateDef for $name {
fn def_id(&self) -> DefId {
self.0
}
}
impl CrateDefType for $name {}
};
}

8
compiler/stable_mir/src/lib.rs
View File

@ -22,8 +22,7 @@ use std::fmt::Debug;
use std::io;
use crate::compiler_interface::with;
pub use crate::crate_def::CrateDef;
pub use crate::crate_def::DefId;
pub use crate::crate_def::{CrateDef, CrateDefType, DefId};
pub use crate::error::*;
use crate::mir::Body;
use crate::mir::Mutability;
@ -115,12 +114,15 @@ pub enum CtorKind {
pub type Filename = String;
crate_def! {
crate_def_with_ty! {
/// Holds information about an item in a crate.
pub CrateItem;
}
impl CrateItem {
/// This will return the body of an item.
///
/// This will panic if no body is available.
pub fn body(&self) -> mir::Body {
with(|cx| cx.mir_body(self.0))
}

28
compiler/stable_mir/src/ty.rs
View File

@ -3,9 +3,10 @@ use super::{
with, DefId, Error, Symbol,
};
use crate::abi::Layout;
use crate::crate_def::{CrateDef, CrateDefType};
use crate::mir::alloc::{read_target_int, read_target_uint, AllocId};
use crate::mir::mono::StaticDef;
use crate::target::MachineInfo;
use crate::{crate_def::CrateDef, mir::mono::StaticDef};
use crate::{Filename, Opaque};
use std::fmt::{self, Debug, Display, Formatter};
use std::ops::Range;
@ -504,6 +505,15 @@ impl TyKind {
pub fn discriminant_ty(&self) -> Option<Ty> {
self.rigid().map(|ty| with(|cx| cx.rigid_ty_discriminant_ty(ty)))
}
/// Deconstruct a function type if this is one.
pub fn fn_def(&self) -> Option<(FnDef, &GenericArgs)> {
if let TyKind::RigidTy(RigidTy::FnDef(def, args)) = self {
Some((*def, args))
} else {
None
}
}
}
pub struct TypeAndMut {
@ -629,7 +639,7 @@ impl ForeignModule {
}
}
crate_def! {
crate_def_with_ty! {
/// Hold information about a ForeignItem in a crate.
pub ForeignDef;
}
@ -647,7 +657,7 @@ pub enum ForeignItemKind {
Type(Ty),
}
crate_def! {
crate_def_with_ty! {
/// Hold information about a function definition in a crate.
pub FnDef;
}
@ -668,9 +678,15 @@ impl FnDef {
pub fn is_intrinsic(&self) -> bool {
self.as_intrinsic().is_some()
}
/// Get the function signature for this function definition.
pub fn fn_sig(&self) -> PolyFnSig {
let kind = self.ty().kind();
kind.fn_sig().unwrap()
}
}
crate_def! {
crate_def_with_ty! {
pub IntrinsicDef;
}
@ -710,7 +726,7 @@ crate_def! {
pub BrNamedDef;
}
crate_def! {
crate_def_with_ty! {
pub AdtDef;
}
@ -866,7 +882,7 @@ crate_def! {
pub GenericDef;
}
crate_def! {
crate_def_with_ty! {
pub ConstDef;
}

21
library/core/src/iter/traits/iterator.rs
View File

@ -2080,8 +2080,7 @@ pub trait Iterator {
fn try_collect<B>(&mut self) -> ChangeOutputType<Self::Item, B>
where
Self: Sized,
<Self as Iterator>::Item: Try,
<<Self as Iterator>::Item as Try>::Residual: Residual<B>,
Self::Item: Try<Residual: Residual<B>>,
B: FromIterator<<Self::Item as Try>::Output>,
{
try_process(ByRefSized(self), |i| i.collect())
@ -2689,12 +2688,13 @@ pub trait Iterator {
#[inline]
#[unstable(feature = "iterator_try_reduce", reason = "new API", issue = "87053")]
#[rustc_do_not_const_check]
fn try_reduce<F, R>(&mut self, f: F) -> ChangeOutputType<R, Option<R::Output>>
fn try_reduce<R>(
&mut self,
f: impl FnMut(Self::Item, Self::Item) -> R,
) -> ChangeOutputType<R, Option<R::Output>>
where
Self: Sized,
F: FnMut(Self::Item, Self::Item) -> R,
R: Try<Output = Self::Item>,
R::Residual: Residual<Option<Self::Item>>,
R: Try<Output = Self::Item, Residual: Residual<Option<Self::Item>>>,
{
let first = match self.next() {
Some(i) => i,
@ -2956,12 +2956,13 @@ pub trait Iterator {
#[inline]
#[unstable(feature = "try_find", reason = "new API", issue = "63178")]
#[rustc_do_not_const_check]
fn try_find<F, R>(&mut self, f: F) -> ChangeOutputType<R, Option<Self::Item>>
fn try_find<R>(
&mut self,
f: impl FnMut(&Self::Item) -> R,
) -> ChangeOutputType<R, Option<Self::Item>>
where
Self: Sized,
F: FnMut(&Self::Item) -> R,
R: Try<Output = bool>,
R::Residual: Residual<Option<Self::Item>>,
R: Try<Output = bool, Residual: Residual<Option<Self::Item>>>,
{
#[inline]
fn check<I, V, R>(

2
library/core/src/option.rs
View File

@ -672,7 +672,7 @@ impl<T> Option<T> {
/// ```
#[must_use]
#[inline]
#[unstable(feature = "is_none_or", issue = "none")]
#[unstable(feature = "is_none_or", issue = "126383")]
pub fn is_none_or(self, f: impl FnOnce(T) -> bool) -> bool {
match self {
None => true,

48
src/tools/compiletest/src/header.rs
View File

@ -14,6 +14,7 @@ use crate::common::{Config, Debugger, FailMode, Mode, PassMode};
use crate::header::cfg::parse_cfg_name_directive;
use crate::header::cfg::MatchOutcome;
use crate::header::needs::CachedNeedsConditions;
use crate::util::static_regex;
use crate::{extract_cdb_version, extract_gdb_version};
mod cfg;
@ -1186,11 +1187,11 @@ impl Config {
}
}
fn parse_custom_normalization(&self, mut line: &str, prefix: &str) -> Option<(String, String)> {
fn parse_custom_normalization(&self, line: &str, prefix: &str) -> Option<(String, String)> {
if parse_cfg_name_directive(self, line, prefix).outcome == MatchOutcome::Match {
let from = parse_normalization_string(&mut line)?;
let to = parse_normalization_string(&mut line)?;
Some((from, to))
let (regex, replacement) = parse_normalize_rule(line)
.unwrap_or_else(|| panic!("couldn't parse custom normalization rule: `{line}`"));
Some((regex, replacement))
} else {
None
}
@ -1311,24 +1312,29 @@ fn expand_variables(mut value: String, config: &Config) -> String {
value
}
/// Finds the next quoted string `"..."` in `line`, and extract the content from it. Move the `line`
/// variable after the end of the quoted string.
///
/// # Examples
///
/// Parses the regex and replacement values of a `//@ normalize-*` header,
/// in the format:
/// ```text
/// normalize-*: "REGEX" -> "REPLACEMENT"
/// ```
/// let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
/// let first = parse_normalization_string(&mut s);
/// assert_eq!(first, Some("something (32 bits)".to_owned()));
/// assert_eq!(s, " -> \"something ($WORD bits)\".");
/// ```
fn parse_normalization_string(line: &mut &str) -> Option<String> {
// FIXME support escapes in strings.
let begin = line.find('"')? + 1;
let end = line[begin..].find('"')? + begin;
let result = line[begin..end].to_owned();
*line = &line[end + 1..];
Some(result)
fn parse_normalize_rule(header: &str) -> Option<(String, String)> {
// FIXME(#126370): A colon after the header name should be mandatory, but
// currently is not, and there are many tests that lack the colon.
// FIXME: Support escaped double-quotes in strings.
let captures = static_regex!(
r#"(?x) # (verbose mode regex)
^
[^:\s]+:?\s* # (header name followed by optional colon)
"(?<regex>[^"]*)" # "REGEX"
\s+->\s+ # ->
"(?<replacement>[^"]*)" # "REPLACEMENT"
$
"#
)
.captures(header)?;
let regex = captures["regex"].to_owned();
let replacement = captures["replacement"].to_owned();
Some((regex, replacement))
}
pub fn extract_llvm_version(version: &str) -> Option<u32> {

60
src/tools/compiletest/src/header/tests.rs
View File

@ -3,7 +3,7 @@ use std::path::Path;
use std::str::FromStr;
use crate::common::{Config, Debugger, Mode};
use crate::header::{parse_normalization_string, EarlyProps, HeadersCache};
use crate::header::{parse_normalize_rule, EarlyProps, HeadersCache};
use super::iter_header;
@ -32,35 +32,41 @@ fn make_test_description<R: Read>(
}
#[test]
fn test_parse_normalization_string() {
let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
let first = parse_normalization_string(&mut s);
assert_eq!(first, Some("something (32 bits)".to_owned()));
assert_eq!(s, " -> \"something ($WORD bits)\".");
fn test_parse_normalize_rule() {
let good_data = &[
(
r#"normalize-stderr-32bit: "something (32 bits)" -> "something ($WORD bits)""#,
"something (32 bits)",
"something ($WORD bits)",
),
// FIXME(#126370): A colon after the header name should be mandatory,
// but currently is not, and there are many tests that lack the colon.
(
r#"normalize-stderr-32bit "something (32 bits)" -> "something ($WORD bits)""#,
"something (32 bits)",
"something ($WORD bits)",
),
];
// Nothing to normalize (No quotes)
let mut s = "normalize-stderr-32bit: something (32 bits) -> something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, None);
assert_eq!(s, r#"normalize-stderr-32bit: something (32 bits) -> something ($WORD bits)."#);
for &(input, expected_regex, expected_replacement) in good_data {
let parsed = parse_normalize_rule(input);
let parsed =
parsed.as_ref().map(|(regex, replacement)| (regex.as_str(), replacement.as_str()));
assert_eq!(parsed, Some((expected_regex, expected_replacement)));
}
// Nothing to normalize (Only a single quote)
let mut s = "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, None);
assert_eq!(s, "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).");
let bad_data = &[
r#"normalize-stderr-16bit: something (16 bits) -> something ($WORD bits)"#,
r#"normalize-stderr-32bit: something (32 bits) -> something ($WORD bits)"#,
r#"normalize-stderr-32bit: "something (32 bits) -> something ($WORD bits)"#,
r#"normalize-stderr-32bit: "something (32 bits)" -> "something ($WORD bits)"#,
r#"normalize-stderr-32bit: "something (32 bits)" -> "something ($WORD bits)"."#,
];
// Nothing to normalize (Three quotes)
let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, Some("something (32 bits)".to_owned()));
assert_eq!(s, " -> \"something ($WORD bits).");
// Nothing to normalize (No quotes, 16-bit)
let mut s = "normalize-stderr-16bit: something (16 bits) -> something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, None);
assert_eq!(s, r#"normalize-stderr-16bit: something (16 bits) -> something ($WORD bits)."#);
for &input in bad_data {
let parsed = parse_normalize_rule(input);
assert_eq!(parsed, None);
}
}
#[derive(Default)]

10
src/tools/compiletest/src/runtest.rs
View File

@ -15,7 +15,7 @@ use crate::errors::{self, Error, ErrorKind};
use crate::header::TestProps;
use crate::json;
use crate::read2::{read2_abbreviated, Truncated};
use crate::util::{add_dylib_path, copy_dir_all, dylib_env_var, logv, PathBufExt};
use crate::util::{add_dylib_path, copy_dir_all, dylib_env_var, logv, static_regex, PathBufExt};
use crate::ColorConfig;
use colored::Colorize;
use miropt_test_tools::{files_for_miropt_test, MiroptTest, MiroptTestFile};
@ -48,14 +48,6 @@ use debugger::DebuggerCommands;
#[cfg(test)]
mod tests;
macro_rules! static_regex {
($re:literal) => {{
static RE: ::std::sync::OnceLock<::regex::Regex> = ::std::sync::OnceLock::new();
RE.get_or_init(|| ::regex::Regex::new($re).unwrap())
}};
}
use static_regex;
const FAKE_SRC_BASE: &str = "fake-test-src-base";
#[cfg(windows)]

3
src/tools/compiletest/src/runtest/coverage.rs
View File

@ -7,7 +7,8 @@ use std::process::Command;
use glob::glob;
use crate::common::{UI_COVERAGE, UI_COVERAGE_MAP};
use crate::runtest::{static_regex, Emit, ProcRes, TestCx, WillExecute};
use crate::runtest::{Emit, ProcRes, TestCx, WillExecute};
use crate::util::static_regex;
impl<'test> TestCx<'test> {
fn coverage_dump_path(&self) -> &Path {

8
src/tools/compiletest/src/util.rs
View File

@ -90,3 +90,11 @@ pub fn copy_dir_all(src: impl AsRef<Path>, dst: impl AsRef<Path>) -> std::io::Re
}
Ok(())
}
macro_rules! static_regex {
($re:literal) => {{
static RE: ::std::sync::OnceLock<::regex::Regex> = ::std::sync::OnceLock::new();
RE.get_or_init(|| ::regex::Regex::new($re).unwrap())
}};
}
pub(crate) use static_regex;

9
src/tools/tidy/src/ext_tool_checks.rs
View File

@ -274,13 +274,18 @@ fn create_venv_at_path(path: &Path) -> Result<(), Error> {
if out.status.success() {
return Ok(());
}
let err = if String::from_utf8_lossy(&out.stderr).contains("No module named virtualenv") {
let stderr = String::from_utf8_lossy(&out.stderr);
let err = if stderr.contains("No module named virtualenv") {
Error::Generic(format!(
"virtualenv not found: you may need to install it \
(`python3 -m pip install venv`)"
))
} else {
Error::Generic(format!("failed to create venv at '{}' using {sys_py}", path.display()))
Error::Generic(format!(
"failed to create venv at '{}' using {sys_py}: {stderr}",
path.display()
))
};
Err(err)
}

114
tests/ui-fulldeps/stable-mir/check_def_ty.rs Normal file
View File

@ -0,0 +1,114 @@
//@ run-pass
//! Test that users are able to use stable mir APIs to retrieve type information from a crate item
//! definition.
//@ ignore-stage1
//@ ignore-cross-compile
//@ ignore-remote
//@ ignore-windows-gnu mingw has troubles with linking https://github.com/rust-lang/rust/pull/116837
//@ edition: 2021
#![feature(rustc_private)]
#![feature(assert_matches)]
#![feature(control_flow_enum)]
#[macro_use]
extern crate rustc_smir;
extern crate rustc_driver;
extern crate rustc_interface;
extern crate stable_mir;
use rustc_smir::rustc_internal;
use stable_mir::ty::{Ty, ForeignItemKind};
use stable_mir::*;
use std::io::Write;
use std::ops::ControlFlow;
const CRATE_NAME: &str = "crate_def_ty";
/// Test if we can retrieve type information from different definitions.
fn test_def_tys() -> ControlFlow<()> {
let items = stable_mir::all_local_items();
for item in &items {
// Type from crate items.
let ty = item.ty();
match item.name().as_str() {
"STATIC_STR" => assert!(ty.kind().is_ref()),
"CONST_U32" => assert!(ty.kind().is_integral()),
"main" => { check_fn_def(ty) }
_ => unreachable!("Unexpected item: `{item:?}`")
}
}
let foreign_items = stable_mir::local_crate().foreign_modules();
for item in foreign_items[0].module().items() {
// Type from foreign items.
let ty = item.ty();
let item_kind = item.kind();
let name = item.name();
match item_kind {
ForeignItemKind::Fn(fn_def) => {
assert_eq!(&name, "extern_fn");
assert_eq!(ty, fn_def.ty());
check_fn_def(ty)
}
ForeignItemKind::Static(def) => {
assert_eq!(&name, "EXT_STATIC");
assert_eq!(ty, def.ty());
assert!(ty.kind().is_integral())
}
_ => unreachable!("Unexpected kind: {item_kind:?}")
};
}
ControlFlow::Continue(())
}
fn check_fn_def(ty: Ty) {
let kind = ty.kind();
let (def, args) = kind.fn_def().expect(&format!("Expected function type, but found: {ty}"));
assert!(def.ty().kind().is_fn());
assert_eq!(def.ty_with_args(args), ty);
}
/// This test will generate and analyze a dummy crate using the stable mir.
/// For that, it will first write the dummy crate into a file.
/// Then it will create a `StableMir` using custom arguments and then
/// it will run the compiler.
fn main() {
let path = "defs_ty_input.rs";
generate_input(&path).unwrap();
let args = vec![
"rustc".to_string(),
"-Cpanic=abort".to_string(),
"--crate-name".to_string(),
CRATE_NAME.to_string(),
path.to_string(),
];
run!(args, test_def_tys).unwrap();
}
fn generate_input(path: &str) -> std::io::Result<()> {
let mut file = std::fs::File::create(path)?;
write!(
file,
r#"
// We would like to check intrinsic definition.
#![feature(core_intrinsics)]
static STATIC_STR: &str = "foo";
const CONST_U32: u32 = 0u32;
fn main() {{
let _c = core::char::from_u32(99);
let _v = Vec::<u8>::new();
let _i = std::intrinsics::size_of::<u8>();
}}
extern "C" {{
fn extern_fn(x: i32) -> i32;
static EXT_STATIC: i32;
}}
"#
)?;
Ok(())
}