bjoernager/rust
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rust/compiler/rustc_mir_transform/src
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Matthias Krüger 9949bbc19c
Rollup merge of #121261 - Zalathar:pending-dups, r=oli-obk 
coverage: Remove `pending_dups` from the span refiner

When extracting coverage spans from a function's MIR, we need to decide how to handle spans that are associated with more than one node (BCB) in the coverage control flow graph.

The existing code for managing those duplicate spans is very subtle and difficult to modify. But by eagerly deduplicating those extracted spans in a much simpler way, we can remove a massive chunk of complexity from the span refiner.

There is a tradeoff here, in that we no longer try to retain *all* nondominating BCBs that have the same span, only the last one in the (semi-arbitrary) dominance ordering. But in practice, this produces very little difference in our coverage tests, and the simplification is so significant that I think it's worthwhile.

``@rustbot`` label +A-code-coverage
2024-02-21 22:48:56 +01:00
..
coroutine Don't ICE in ByMoveBody when coroutine is tainted 2024-02-09 00:36:30 +00:00
coverage coverage: Simplify (non-closure) covspans truncating each other 2024-02-21 21:25:36 +11:00
inline Dejargnonize subst 2024-02-12 15:46:35 +09:00
abort_unwinding_calls.rs Fix mir pass ICE in the presence of other errors 2024-02-08 14:49:27 +00:00
add_call_guards.rs remove redundant imports 2023-12-10 10:56:22 +08:00
add_moves_for_packed_drops.rs remove redundant imports 2023-12-10 10:56:22 +08:00
add_retag.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
add_subtyping_projections.rs remove redundant imports 2023-12-10 10:56:22 +08:00
check_alignment.rs remove redundant imports 2023-12-10 10:56:22 +08:00
check_const_item_mutation.rs Rename TyCtxt::emit_spanned_lint as TyCtxt::emit_node_span_lint. 2024-01-23 08:09:05 +11:00
check_packed_ref.rs Remove Session methods that duplicate DiagCtxt methods. 2023-12-24 08:05:28 +11:00
check_unsafety.rs Use fewer delayed bugs. 2024-02-14 20:30:37 +11:00
cleanup_post_borrowck.rs rename BorrowKind::Shallow to Fake 2023-11-08 22:55:28 +01:00
const_debuginfo.rs Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
copy_prop.rs remove redundant imports 2023-12-10 10:56:22 +08:00
coroutine.rs Convert delayed_bugs to bugs. 2024-02-21 10:20:05 +11:00
cost_checker.rs Make is_intrinsic query return the intrinsic name 2024-02-12 09:33:52 +00:00
cross_crate_inline.rs Fix cases where std accidentally relied on inline(never) 2023-12-14 08:30:36 -05:00
ctfe_limit.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
dataflow_const_prop.rs Remove const_prop.rs 2024-02-18 15:31:44 +05:30
dead_store_elimination.rs Auto merge of #116520 - Enselic:large-copy-into-fn, r=oli-obk 2024-01-16 19:33:14 +00:00
deduce_param_attrs.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
deduplicate_blocks.rs Merge dead bb pruning and unreachable bb deduplication. 2024-01-07 15:12:10 +00:00
deref_separator.rs remove redundant imports 2023-12-10 10:56:22 +08:00
dest_prop.rs Bump indexmap 2024-02-13 21:03:34 +00:00
dump_mir.rs Write to stdout if - is given as output file 2023-06-06 17:53:29 -04:00
early_otherwise_branch.rs Merge dead bb pruning and unreachable bb deduplication. 2024-01-07 15:12:10 +00:00
elaborate_box_derefs.rs remove redundant imports 2023-12-10 10:56:22 +08:00
elaborate_drops.rs Convert delayed_bugs to bugs. 2024-02-21 10:20:05 +11:00
errors.rs Reduce capabilities of Diagnostic. 2024-02-20 13:22:17 +11:00
ffi_unwind_calls.rs Continue to borrowck even if there were previous errors 2024-02-08 08:10:43 +00:00
function_item_references.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
gvn.rs Split a bool argument into two named functions 2024-02-15 10:25:18 +00:00
inline.rs Check that the ABI of the instance we are inlining is correct 2024-02-11 19:17:42 +00:00
instsimplify.rs Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
jump_threading.rs Skip coroutines in jump threading to avoid query cycles 2024-02-15 00:00:00 +00:00
known_panics_lint.rs Rename ConstPropLint to KnownPanicsLint 2024-02-20 07:41:48 +05:30
large_enums.rs Fix some comments 2023-12-28 12:23:14 +08:00
lib.rs Rename ConstPropLint to KnownPanicsLint 2024-02-20 07:41:48 +05:30
lint.rs compiler: Lower fn call arg spans down to MIR 2024-01-15 19:07:11 +01:00
lower_intrinsics.rs Make is_intrinsic query return the intrinsic name 2024-02-12 09:33:52 +00:00
lower_slice_len.rs compiler: Lower fn call arg spans down to MIR 2024-01-15 19:07:11 +01:00
match_branches.rs Merge dead bb pruning and unreachable bb deduplication. 2024-01-07 15:12:10 +00:00
multiple_return_terminators.rs remove redundant imports 2023-12-10 10:56:22 +08:00
normalize_array_len.rs remove redundant imports 2023-12-10 10:56:22 +08:00
nrvo.rs Remove uses of HybridBitSet. 2024-01-22 22:53:20 +00:00
pass_manager.rs Rollup merge of #120733 - klensy:trait-const-fn, r=oli-obk 2024-02-07 18:24:45 +01:00
prettify.rs remove redundant imports 2023-12-10 10:56:22 +08:00
promote_consts.rs Add a new debug_assertions instrinsic (compiler) 2024-02-08 11:49:08 -05:00
ref_prop.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
remove_noop_landing_pads.rs Avoid debug logging entire MIR body 2024-02-15 15:54:28 +01:00
remove_place_mention.rs remove redundant imports 2023-12-10 10:56:22 +08:00
remove_storage_markers.rs Move condition enabling the pass to is_enabled 2024-01-23 20:58:44 +01:00
remove_uninit_drops.rs remove redundant imports 2023-12-10 10:56:22 +08:00
remove_unneeded_drops.rs Merge dead bb pruning and unreachable bb deduplication. 2024-01-07 15:12:10 +00:00
remove_zsts.rs Add CoroutineClosure to TyKind, AggregateKind, UpvarArgs 2024-02-06 02:22:58 +00:00
required_consts.rs rename mir::Constant -> mir::ConstOperand, mir::ConstKind -> mir::Const 2023-09-21 08:12:30 +02:00
reveal_all.rs remove redundant imports 2023-12-10 10:56:22 +08:00
shim.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
simplify.rs Merge dead bb pruning and unreachable bb deduplication. 2024-01-07 15:12:10 +00:00
simplify_branches.rs remove redundant imports 2023-12-10 10:56:22 +08:00
simplify_comparison_integral.rs rename mir::Constant -> mir::ConstOperand, mir::ConstKind -> mir::Const 2023-09-21 08:12:30 +02:00
sroa.rs remove redundant imports 2023-12-10 10:56:22 +08:00
ssa.rs Dejargnonize subst 2024-02-12 15:46:35 +09:00
uninhabited_enum_branching.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
unreachable_prop.rs rustc_mir_transform: Enforce rustc::potential_query_instability lint 2024-01-06 19:09:04 +01:00