Matthias Krüger 57cbd078f2 Rollup merge of #134497 - Zalathar:spans, r=jieyouxu ... coverage: Store coverage source regions as `Span` until codegen (take 2) This is an attempt to re-land #133418: > Historically, coverage spans were converted into line/column coordinates during the MIR instrumentation pass. > This PR moves that conversion step into codegen, so that coverage spans spend most of their time stored as Span instead. > In addition to being conceptually nicer, this also reduces the size of coverage mappings in MIR, because Span is smaller than 4x u32. That PR was reverted by #133608, because in some circumstances not covered by our test suite we were emitting coverage metadata that was causing `llvm-cov` to exit with an error (#133606). --- The implementation here is *mostly* the same, but adapted for subsequent changes in the relevant code (e.g. #134163). I believe that the changes in #134163 should be sufficient to prevent the problem that required the original PR to be reverted. But I haven't been able to reproduce the original breakage in a regression test, and the `llvm-cov` error message is extremely unhelpful, so I can't completely rule out the possibility of this breaking again. r? jieyouxu (reviewer of the original PR)		2024-12-19 15:26:16 +01:00
..
coroutine	Re-export more rustc_span::symbol things from rustc_span.	2024-12-18 13:38:53 +11:00
coverage	coverage: Store coverage source regions as Span until codegen	2024-12-19 18:09:09 +11:00
inline	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
shim	mir: require is_cleanup when creating BasicBlockData	2024-12-18 20:43:54 +08:00
abort_unwinding_calls.rs	compiler: Directly use rustc_abi in mir_transform	2024-11-03 13:38:47 -08:00
add_call_guards.rs	Inline and remove some functions.	2024-09-10 08:54:17 +10:00
add_moves_for_packed_drops.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
add_retag.rs	Reformat using the new identifier sorting from rustfmt	2024-09-22 19:11:29 -04:00
add_subtyping_projections.rs	Inline and remove some functions.	2024-09-10 08:54:17 +10:00
check_alignment.rs	move fn is_item_raw to TypingEnv	2024-11-19 18:06:20 +01:00
check_const_item_mutation.rs	Reformat using the new identifier sorting from rustfmt	2024-09-22 19:11:29 -04:00
check_packed_ref.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
check_undefined_transmutes.rs	Add a Lint for Pointer to Integer Transmutes in Consts	2024-10-05 12:48:02 +00:00
cleanup_post_borrowck.rs	be even more precise about "cast" vs "coercion"	2024-09-24 23:12:02 +02:00
copy_prop.rs	move fn is_item_raw to TypingEnv	2024-11-19 18:06:20 +01:00
coroutine.rs	Re-export more rustc_span::symbol things from rustc_span.	2024-12-18 13:38:53 +11:00
cost_checker.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
cross_crate_inline.rs	rename rustc_attr to rustc_attr_parsing and create rustc_attr_data_structures	2024-12-16 19:08:19 +01:00
ctfe_limit.rs	Reduce visibilities, and add warn(unreachable_pub).	2024-09-09 08:48:09 +10:00
dataflow_const_prop.rs	Rollup merge of #133938 - nnethercote:rustc_mir_dataflow-renamings, r=oli-obk	2024-12-13 17:25:29 +01:00
dead_store_elimination.rs	reduce false positives of tail-expr-drop-order from consumed values	2024-11-20 20:53:11 +08:00
deduce_param_attrs.rs	move fn is_item_raw to TypingEnv	2024-11-19 18:06:20 +01:00
deduplicate_blocks.rs	Rename and reorder lots of lifetimes.	2024-09-13 15:46:20 +10:00
deref_separator.rs	Use LocalDecls in a couple of places.	2024-09-09 15:15:44 +10:00
dest_prop.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
dump_mir.rs	Dogfood feature(file_buffered)	2024-09-24 14:25:16 -07:00
early_otherwise_branch.rs	mir-opt: Do not handle the cleanup BB in the EarlyOtherwiseBranch	2024-12-18 20:43:55 +08:00
elaborate_box_derefs.rs	compiler: Directly use rustc_abi in mir_transform	2024-11-03 13:38:47 -08:00
elaborate_drops.rs	Improve terminology in elaborate_drops.rs.	2024-12-10 12:06:03 +11:00
errors.rs	Validate and test -Zmir-enable-passes	2024-11-12 13:28:05 +00:00
ffi_unwind_calls.rs	compiler: Directly use rustc_abi in mir_transform	2024-11-03 13:38:47 -08:00
function_item_references.rs	Re-export more rustc_span::symbol things from rustc_span.	2024-12-18 13:38:53 +11:00
gvn.rs	Do not unify dereferences in GVN.	2024-11-25 20:19:08 +01:00
inline.rs	mir: require is_cleanup when creating BasicBlockData	2024-12-18 20:43:54 +08:00
instsimplify.rs	Re-export more rustc_span::symbol things from rustc_span.	2024-12-18 13:38:53 +11:00
jump_threading.rs	Variants::Single: do not use invalid VariantIdx for uninhabited enums	2024-12-18 11:00:21 +01:00
known_panics_lint.rs	remove remaining references to Reveal	2024-11-23 13:52:56 +01:00
large_enums.rs	make no-variant types a dedicated Variants variant	2024-12-18 11:01:54 +01:00
lib.rs	We don't need NonNull::as_ptr debuginfo	2024-12-10 01:29:43 -08:00
lint.rs	Move always_storage_live_locals.	2024-11-26 12:05:57 +11:00
lint_tail_expr_drop_order.rs	Change ChunkedBitSet<MovePathIndex>s to MixedBitSet.	2024-12-05 20:07:26 +11:00
lower_intrinsics.rs	Re-export more rustc_span::symbol things from rustc_span.	2024-12-18 13:38:53 +11:00
lower_slice_len.rs	Inline and remove some functions.	2024-09-10 08:54:17 +10:00
match_branches.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
mentioned_items.rs	be even more precise about "cast" vs "coercion"	2024-09-24 23:12:02 +02:00
multiple_return_terminators.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
nrvo.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
pass_manager.rs	mir validator: don't store mir phase	2024-12-02 13:38:18 +01:00
post_analysis_normalize.rs	rebase	2024-11-23 13:52:57 +01:00
post_drop_elaboration.rs	Make check_live_drops into a MirLint.	2024-09-10 09:11:17 +10:00
prettify.rs	Improve comment formatting.	2024-09-10 08:42:30 +10:00
promote_consts.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
ref_prop.rs	Move always_storage_live_locals.	2024-11-26 12:05:57 +11:00
remove_noop_landing_pads.rs	reduce false positives of tail-expr-drop-order from consumed values	2024-11-20 20:53:11 +08:00
remove_place_mention.rs	Reduce visibilities, and add warn(unreachable_pub).	2024-09-09 08:48:09 +10:00
remove_storage_markers.rs	Reduce visibilities, and add warn(unreachable_pub).	2024-09-09 08:48:09 +10:00
remove_uninit_drops.rs	Change ChunkedBitSet<MovePathIndex>s to MixedBitSet.	2024-12-05 20:07:26 +11:00
remove_unneeded_drops.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
remove_zsts.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
required_consts.rs	Reformat using the new identifier sorting from rustfmt	2024-09-22 19:11:29 -04:00
sanity_check.rs	Move MirPass to rustc_mir_transform.	2024-09-03 16:03:46 +10:00
shim.rs	Implement projection and shim for AFIDT	2024-12-10 16:52:20 +00:00
simplify.rs	reduce false positives of tail-expr-drop-order from consumed values	2024-11-20 20:53:11 +08:00
simplify_branches.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
simplify_comparison_integral.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
single_use_consts.rs	cleanup: don't clone types that are Copy	2024-09-29 13:31:30 +02:00
sroa.rs	use TypingEnv when no infcx is available	2024-11-18 10:38:56 +01:00
ssa.rs	move fn is_item_raw to TypingEnv	2024-11-19 18:06:20 +01:00
strip_debuginfo.rs	We don't need NonNull::as_ptr debuginfo	2024-12-10 01:29:43 -08:00
unreachable_enum_branching.rs	make no-variant types a dedicated Variants variant	2024-12-18 11:01:54 +01:00
unreachable_prop.rs	Remove -Zfuel.	2024-11-26 10:45:21 +00:00
validate.rs	Bounds-check with PtrMetadata instead of Len in MIR	2024-12-03 11:05:45 -08:00