mirror of https://github.com/rust-lang/rust.git
Revert "Use CachingSourceMapView::byte_pos_to_line_and_col instead of SourceMap::lookup_char_pos"
This reverts commit eb4fc45310
.
It caused a panic while compiling simple-raytracer
This commit is contained in:
parent
eb4fc45310
commit
fbe36ad68a
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@ -3,7 +3,7 @@ use std::path::{Component, Path};
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use crate::prelude::*;
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use rustc_span::{CachingSourceMapView, FileName};
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use rustc_span::FileName;
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use cranelift_codegen::binemit::CodeOffset;
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@ -74,12 +74,12 @@ fn line_program_add_file(
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impl<'tcx> DebugContext<'tcx> {
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pub(super) fn emit_location(&mut self, entry_id: UnitEntryId, span: Span) {
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let (file, line, col) = self.source_map.byte_pos_to_line_and_col(span.lo()).unwrap();
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let loc = self.tcx.sess.source_map().lookup_char_pos(span.lo());
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let file_id = line_program_add_file(
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&mut self.dwarf.unit.line_program,
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&mut self.dwarf.line_strings,
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&file.name,
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&loc.file.name,
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);
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let entry = self.dwarf.unit.get_mut(entry_id);
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@ -90,12 +90,12 @@ impl<'tcx> DebugContext<'tcx> {
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);
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entry.set(
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gimli::DW_AT_decl_line,
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AttributeValue::Udata(line as u64),
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AttributeValue::Udata(loc.line as u64),
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);
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// FIXME: probably omit this
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entry.set(
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gimli::DW_AT_decl_column,
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AttributeValue::Udata(col.to_usize() as u64),
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AttributeValue::Udata(loc.col.to_usize() as u64),
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);
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}
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}
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@ -108,7 +108,6 @@ impl<'a, 'tcx> FunctionDebugContext<'a, 'tcx> {
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source_info_set: &indexmap::IndexSet<SourceInfo>,
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) -> CodeOffset {
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let tcx = self.debug_context.tcx;
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let mut source_map = CachingSourceMapView::new(tcx.sess.source_map());
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let line_program = &mut self.debug_context.dwarf.unit.line_program;
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@ -125,25 +124,25 @@ impl<'a, 'tcx> FunctionDebugContext<'a, 'tcx> {
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let line_strings = &mut self.debug_context.dwarf.line_strings;
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let mut last_file = None;
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let mut create_row_for_span = |line_program: &mut LineProgram, span: Span| {
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let (file, line, col) = source_map.byte_pos_to_line_and_col(span.lo()).unwrap();
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let loc = tcx.sess.source_map().lookup_char_pos(span.lo());
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// line_program_add_file is very slow.
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// Optimize for the common case of the current file not being changed.
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let current_file_changed = if let Some(last_file) = &mut last_file {
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// If the allocations are not equal, then the files may still be equal, but that
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// is not a problem, as this is just an optimization.
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!Lrc::ptr_eq(last_file, &file)
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!Lrc::ptr_eq(last_file, &loc.file)
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} else {
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true
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};
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if current_file_changed {
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let file_id = line_program_add_file(line_program, line_strings, &file.name);
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let file_id = line_program_add_file(line_program, line_strings, &loc.file.name);
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line_program.row().file = file_id;
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last_file = Some(file.clone());
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last_file = Some(loc.file.clone());
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}
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line_program.row().line = line as u64;
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line_program.row().column = col.to_u32() as u64 + 1;
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line_program.row().line = loc.line as u64;
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line_program.row().column = loc.col.to_u32() as u64 + 1;
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line_program.generate_row();
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};
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@ -3,8 +3,6 @@ mod line_info;
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use crate::prelude::*;
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use rustc_span::CachingSourceMapView;
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use cranelift_codegen::ir::{StackSlots, ValueLabel, ValueLoc};
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use cranelift_codegen::isa::RegUnit;
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use cranelift_codegen::ValueLocRange;
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@ -36,8 +34,6 @@ pub struct DebugContext<'tcx> {
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unit_range_list: RangeList,
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types: HashMap<Ty<'tcx>, UnitEntryId>,
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source_map: CachingSourceMapView<'tcx>,
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}
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impl<'tcx> DebugContext<'tcx> {
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@ -102,8 +98,6 @@ impl<'tcx> DebugContext<'tcx> {
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unit_range_list: RangeList(Vec::new()),
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types: HashMap::new(),
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source_map: CachingSourceMapView::new(tcx.sess.source_map()),
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}
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}
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