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introduce PrettyPrintMirOptions for cosmetic MIR dump options

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initially starting with `-Z mir-include-spans` because we want them in
the NLL mir dump pass
This commit is contained in:
Rémy Rakic 2024-08-28 13:54:32 +00:00
parent 0d634185df
commit c646b46b52
2 changed files with 92 additions and 29 deletions
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5
compiler/rustc_codegen_cranelift/src/base.rs
View File

@ -44,8 +44,9 @@ pub(crate) fn codegen_fn<'tcx>(
let _mir_guard = crate::PrintOnPanic(|| {
let mut buf = Vec::new();
with_no_trimmed_paths!({
rustc_middle::mir::pretty::write_mir_fn(tcx, mir, &mut |_, _| Ok(()), &mut buf)
.unwrap();
use rustc_middle::mir::pretty;
let options = pretty::PrettyPrintMirOptions::from_cli(tcx);
pretty::write_mir_fn(tcx, mir, &mut |_, _| Ok(()), &mut buf, options).unwrap();
});
String::from_utf8_lossy(&buf).into_owned()
});

116
compiler/rustc_middle/src/mir/pretty.rs
View File

@ -43,8 +43,23 @@ pub enum PassWhere {
AfterTerminator(BasicBlock),
}
/// If the session is properly configured, dumps a human-readable
/// representation of the mir into:
/// Cosmetic options for pretty-printing the MIR contents, gathered from the CLI. Each pass can
/// override these when dumping its own specific MIR information with [`dump_mir_with_options`].
#[derive(Copy, Clone)]
pub struct PrettyPrintMirOptions {
/// Whether to include extra comments, like span info. From `-Z mir-include-spans`.
pub include_extra_comments: bool,
}
impl PrettyPrintMirOptions {
/// Create the default set of MIR pretty-printing options from the CLI flags.
pub fn from_cli(tcx: TyCtxt<'_>) -> Self {
Self { include_extra_comments: tcx.sess.opts.unstable_opts.mir_include_spans }
}
}
/// If the session is properly configured, dumps a human-readable representation of the MIR (with
/// default pretty-printing options) into:
///
/// ```text
/// rustc.node<node_id>.<pass_num>.<pass_name>.<disambiguator>
@ -77,12 +92,40 @@ pub fn dump_mir<'tcx, F>(
extra_data: F,
) where
F: FnMut(PassWhere, &mut dyn io::Write) -> io::Result<()>,
{
dump_mir_with_options(
tcx,
pass_num,
pass_name,
disambiguator,
body,
extra_data,
PrettyPrintMirOptions::from_cli(tcx),
);
}
/// If the session is properly configured, dumps a human-readable representation of the MIR, with
/// the given [pretty-printing options][PrettyPrintMirOptions].
///
/// See [`dump_mir`] for more details.
///
#[inline]
pub fn dump_mir_with_options<'tcx, F>(
tcx: TyCtxt<'tcx>,
pass_num: bool,
pass_name: &str,
disambiguator: &dyn Display,
body: &Body<'tcx>,
extra_data: F,
options: PrettyPrintMirOptions,
) where
F: FnMut(PassWhere, &mut dyn io::Write) -> io::Result<()>,
{
if !dump_enabled(tcx, pass_name, body.source.def_id()) {
return;
}
dump_matched_mir_node(tcx, pass_num, pass_name, disambiguator, body, extra_data);
dump_matched_mir_node(tcx, pass_num, pass_name, disambiguator, body, extra_data, options);
}
pub fn dump_enabled(tcx: TyCtxt<'_>, pass_name: &str, def_id: DefId) -> bool {
@ -112,6 +155,7 @@ fn dump_matched_mir_node<'tcx, F>(
disambiguator: &dyn Display,
body: &Body<'tcx>,
mut extra_data: F,
options: PrettyPrintMirOptions,
) where
F: FnMut(PassWhere, &mut dyn io::Write) -> io::Result<()>,
{
@ -133,7 +177,7 @@ fn dump_matched_mir_node<'tcx, F>(
writeln!(file)?;
extra_data(PassWhere::BeforeCFG, &mut file)?;
write_user_type_annotations(tcx, body, &mut file)?;
write_mir_fn(tcx, body, &mut extra_data, &mut file)?;
write_mir_fn(tcx, body, &mut extra_data, &mut file, options)?;
extra_data(PassWhere::AfterCFG, &mut file)?;
};
@ -243,12 +287,15 @@ pub fn create_dump_file<'tcx>(
///////////////////////////////////////////////////////////////////////////
// Whole MIR bodies
/// Write out a human-readable textual representation for the given MIR.
/// Write out a human-readable textual representation for the given MIR, with the default
/// [PrettyPrintMirOptions].
pub fn write_mir_pretty<'tcx>(
tcx: TyCtxt<'tcx>,
single: Option<DefId>,
w: &mut dyn io::Write,
) -> io::Result<()> {
let options = PrettyPrintMirOptions::from_cli(tcx);
writeln!(w, "// WARNING: This output format is intended for human consumers only")?;
writeln!(w, "// and is subject to change without notice. Knock yourself out.")?;
@ -262,11 +309,11 @@ pub fn write_mir_pretty<'tcx>(
}
let render_body = |w: &mut dyn io::Write, body| -> io::Result<()> {
write_mir_fn(tcx, body, &mut |_, _| Ok(()), w)?;
write_mir_fn(tcx, body, &mut |_, _| Ok(()), w, options)?;
for body in tcx.promoted_mir(def_id) {
writeln!(w)?;
write_mir_fn(tcx, body, &mut |_, _| Ok(()), w)?;
write_mir_fn(tcx, body, &mut |_, _| Ok(()), w, options)?;
}
Ok(())
};
@ -278,7 +325,7 @@ pub fn write_mir_pretty<'tcx>(
writeln!(w, "// MIR FOR CTFE")?;
// Do not use `render_body`, as that would render the promoteds again, but these
// are shared between mir_for_ctfe and optimized_mir
write_mir_fn(tcx, tcx.mir_for_ctfe(def_id), &mut |_, _| Ok(()), w)?;
write_mir_fn(tcx, tcx.mir_for_ctfe(def_id), &mut |_, _| Ok(()), w, options)?;
} else {
let instance_mir = tcx.instance_mir(ty::InstanceKind::Item(def_id));
render_body(w, instance_mir)?;
@ -293,14 +340,15 @@ pub fn write_mir_fn<'tcx, F>(
body: &Body<'tcx>,
extra_data: &mut F,
w: &mut dyn io::Write,
options: PrettyPrintMirOptions,
) -> io::Result<()>
where
F: FnMut(PassWhere, &mut dyn io::Write) -> io::Result<()>,
{
write_mir_intro(tcx, body, w)?;
write_mir_intro(tcx, body, w, options)?;
for block in body.basic_blocks.indices() {
extra_data(PassWhere::BeforeBlock(block), w)?;
write_basic_block(tcx, block, body, extra_data, w)?;
write_basic_block(tcx, block, body, extra_data, w, options)?;
if block.index() + 1 != body.basic_blocks.len() {
writeln!(w)?;
}
@ -321,6 +369,7 @@ fn write_scope_tree(
w: &mut dyn io::Write,
parent: SourceScope,
depth: usize,
options: PrettyPrintMirOptions,
) -> io::Result<()> {
let indent = depth * INDENT.len();
@ -333,7 +382,7 @@ fn write_scope_tree(
let indented_debug_info = format!("{0:1$}debug {2:?};", INDENT, indent, var_debug_info);
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
writeln!(
w,
"{0:1$} // in {2}",
@ -373,7 +422,7 @@ fn write_scope_tree(
let local_name = if local == RETURN_PLACE { " return place" } else { "" };
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
writeln!(
w,
"{0:1$} //{2} in {3}",
@ -410,7 +459,7 @@ fn write_scope_tree(
let indented_header = format!("{0:1$}scope {2}{3} {{", "", indent, child.index(), special);
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
if let Some(span) = span {
writeln!(
w,
@ -426,7 +475,7 @@ fn write_scope_tree(
writeln!(w, "{indented_header}")?;
}
write_scope_tree(tcx, body, scope_tree, w, child, depth + 1)?;
write_scope_tree(tcx, body, scope_tree, w, child, depth + 1, options)?;
writeln!(w, "{0:1$}}}", "", depth * INDENT.len())?;
}
@ -449,10 +498,11 @@ impl Debug for VarDebugInfo<'_> {
/// Write out a human-readable textual representation of the MIR's `fn` type and the types of its
/// local variables (both user-defined bindings and compiler temporaries).
pub fn write_mir_intro<'tcx>(
fn write_mir_intro<'tcx>(
tcx: TyCtxt<'tcx>,
body: &Body<'_>,
w: &mut dyn io::Write,
options: PrettyPrintMirOptions,
) -> io::Result<()> {
write_mir_sig(tcx, body, w)?;
writeln!(w, "{{")?;
@ -468,7 +518,7 @@ pub fn write_mir_intro<'tcx>(
}
}
write_scope_tree(tcx, body, &scope_tree, w, OUTERMOST_SOURCE_SCOPE, 1)?;
write_scope_tree(tcx, body, &scope_tree, w, OUTERMOST_SOURCE_SCOPE, 1, options)?;
// Add an empty line before the first block is printed.
writeln!(w)?;
@ -651,12 +701,13 @@ pub fn dump_mir_def_ids(tcx: TyCtxt<'_>, single: Option<DefId>) -> Vec<DefId> {
// Basic blocks and their parts (statements, terminators, ...)
/// Write out a human-readable textual representation for the given basic block.
pub fn write_basic_block<'tcx, F>(
fn write_basic_block<'tcx, F>(
tcx: TyCtxt<'tcx>,
block: BasicBlock,
body: &Body<'tcx>,
extra_data: &mut F,
w: &mut dyn io::Write,
options: PrettyPrintMirOptions,
) -> io::Result<()>
where
F: FnMut(PassWhere, &mut dyn io::Write) -> io::Result<()>,
@ -672,7 +723,7 @@ where
for statement in &data.statements {
extra_data(PassWhere::BeforeLocation(current_location), w)?;
let indented_body = format!("{INDENT}{INDENT}{statement:?};");
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
writeln!(
w,
"{:A$} // {}{}",
@ -689,9 +740,14 @@ where
writeln!(w, "{indented_body}")?;
}
write_extra(tcx, w, |visitor| {
visitor.visit_statement(statement, current_location);
})?;
write_extra(
tcx,
w,
|visitor| {
visitor.visit_statement(statement, current_location);
},
options,
)?;
extra_data(PassWhere::AfterLocation(current_location), w)?;
@ -701,7 +757,7 @@ where
// Terminator at the bottom.
extra_data(PassWhere::BeforeLocation(current_location), w)?;
let indented_terminator = format!("{0}{0}{1:?};", INDENT, data.terminator().kind);
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
writeln!(
w,
"{:A$} // {}{}",
@ -718,9 +774,14 @@ where
writeln!(w, "{indented_terminator}")?;
}
write_extra(tcx, w, |visitor| {
visitor.visit_terminator(data.terminator(), current_location);
})?;
write_extra(
tcx,
w,
|visitor| {
visitor.visit_terminator(data.terminator(), current_location);
},
options,
)?;
extra_data(PassWhere::AfterLocation(current_location), w)?;
extra_data(PassWhere::AfterTerminator(block), w)?;
@ -1271,11 +1332,12 @@ fn write_extra<'tcx, F>(
tcx: TyCtxt<'tcx>,
write: &mut dyn io::Write,
mut visit_op: F,
options: PrettyPrintMirOptions,
) -> io::Result<()>
where
F: FnMut(&mut ExtraComments<'tcx>),
{
if tcx.sess.opts.unstable_opts.mir_include_spans {
if options.include_extra_comments {
let mut extra_comments = ExtraComments { tcx, comments: vec![] };
visit_op(&mut extra_comments);
for comment in extra_comments.comments {
@ -1890,7 +1952,7 @@ pub(crate) fn pretty_print_const_value<'tcx>(
///////////////////////////////////////////////////////////////////////////
// Miscellaneous
/// Calc converted u64 decimal into hex and return it's length in chars
/// Calc converted u64 decimal into hex and return its length in chars.
///
/// ```ignore (cannot-test-private-function)
/// assert_eq!(1, hex_number_length(0));