Stuart Cook 4529dd9192 Rollup merge of #143028 - dianne:let-else-storage, r=oli-obk,traviscross ... emit `StorageLive` and schedule `StorageDead` for `let`-`else`'s bindings after matching This PR removes special handling of `let`-`else`, so that `StorageLive`s are emitted and `StorageDead`s are scheduled only after pattern-matching has succeeded. This means `StorageDead`s will no longer appear for all of its bindings on the `else` branch (because they're not live yet) and its drops&`StorageDead`s will happen together like they do elsewhere, rather than having all drops first, then all `StorageDead`s. This fixes rust-lang/rust#142056, and is therefore a breaking change. I believe it'll need a crater run and a T-lang nomination/fcp thereafter. Specifically, this makes drop-checking slightly more restrictive for `let`-`else` to match the behavior of other variable binding forms. An alternative approach could be to change the relative order of drops and `StorageDead`s for other binding forms to make drop-checking more permissive, but making that consistent would be a significantly more involved change. r? mir cc `````@dingxiangfei2009````` `````@rustbot````` label +T-lang +needs-crater		2025-08-07 20:49:38 +10:00
..
custom	Dont print arg span in MIR dump for tail call	2025-08-04 18:35:43 +00:00
match	Do not optimize out SwitchInt before borrowck, or if Zmir-preserve-ub	2025-04-08 21:05:20 +00:00
async_await.a-{closure#0}.coroutine_resume.0.mir	In pretty_print_type(), print async fn futures' paths instead of spans.	2024-03-25 08:01:15 -07:00
async_await.b-{closure#0}.coroutine_resume.0.mir	Remove the witness type from coroutine args	2025-07-31 17:38:28 +00:00
async_await.rs	[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives	2024-02-22 16:04:04 +00:00
dump_mir_cycle.rs	Fix cycle error only occurring with -Zdump-mir	2025-01-10 08:57:54 +00:00
enum_cast.bar.built.after.mir	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.boo.built.after.mir	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.far.built.after.mir	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.foo.built.after.mir	Remove comments from mir-opt MIR dumps	2023-06-15 15:19:11 -04:00
enum_cast.offsetty.built.after.mir	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.rs	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.signy.built.after.mir	MIR-build: No longer emit assumes in enum-as casting	2025-07-24 10:18:37 -07:00
enum_cast.unsigny.built.after.mir	Remove comments from mir-opt MIR dumps	2023-06-15 15:19:11 -04:00
eq_never_type._f.built.after.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
eq_never_type.rs	Add a test for a == b where a: !, b: !	2024-04-19 11:05:02 +00:00
index_array_and_slice.index_array.built.after.mir	Reapply "Auto merge of #133734 - scottmcm:lower-indexing-to-ptrmetadata, r=davidtwco,RalfJung"	2025-01-27 23:42:47 +00:00
index_array_and_slice.index_const_generic_array.built.after.mir	Reapply "Auto merge of #133734 - scottmcm:lower-indexing-to-ptrmetadata, r=davidtwco,RalfJung"	2025-01-27 23:42:47 +00:00
index_array_and_slice.index_custom.built.after.mir	Represent the raw pointer for a array length check as a new kind of fake borrow	2025-01-28 00:00:33 +00:00
index_array_and_slice.index_mut_slice.built.after.mir	Represent the raw pointer for a array length check as a new kind of fake borrow	2025-01-28 00:00:33 +00:00
index_array_and_slice.index_slice.built.after.mir	Reapply "Auto merge of #133734 - scottmcm:lower-indexing-to-ptrmetadata, r=davidtwco,RalfJung"	2025-01-27 23:42:47 +00:00
index_array_and_slice.rs	Represent the raw pointer for a array length check as a new kind of fake borrow	2025-01-28 00:00:33 +00:00
issue_49232.main.built.after.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
issue_49232.rs	Allow to run filecheck in mir-opt tests.	2023-10-19 15:51:52 +00:00
issue_101867.main.built.after.mir	Rollup merge of #143028 - dianne:let-else-storage, r=oli-obk,traviscross	2025-08-07 20:49:38 +10:00
issue_101867.rs	Allow to run filecheck in mir-opt tests.	2023-10-19 15:51:52 +00:00
issue_110508.rs	Allow to run filecheck in mir-opt tests.	2023-10-19 15:51:52 +00:00
issue_110508.{impl#0}-BAR.built.after.mir	Allow to run filecheck in mir-opt tests.	2023-10-19 15:51:52 +00:00
issue_110508.{impl#0}-SELF_BAR.built.after.mir	Allow to run filecheck in mir-opt tests.	2023-10-19 15:51:52 +00:00
logical_or_in_conditional.rs	Remove let_chains feature gate from even more tests	2025-04-18 15:57:29 +02:00
logical_or_in_conditional.test_complex.built.after.mir	Remove let_chains feature gate from even more tests	2025-04-18 15:57:29 +02:00
logical_or_in_conditional.test_or.built.after.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
receiver_ptr_mutability.main.built.after.mir	yeet CanonicalVarInfo	2025-05-23 12:10:53 +00:00
receiver_ptr_mutability.rs	Arbitrary self types v2: pointers feature gate.	2024-08-27 17:32:35 +00:00
shifts.rs	rustfmt tests/mir-opt.	2024-06-03 14:17:16 +10:00
shifts.shift_signed.built.after.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
shifts.shift_unsigned.built.after.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
storage_live_dead_in_statics.rs	rustfmt tests/mir-opt.	2024-06-03 14:17:16 +10:00
storage_live_dead_in_statics.XXX.built.after.mir	Give an AllocId to ConstValue::Slice.	2025-07-23 23:54:37 +00:00
uniform_array_move_out.move_out_by_subslice.built.after.mir	Return the otherwise_block instead of passing it as argument	2024-07-09 22:47:35 +02:00
uniform_array_move_out.move_out_from_end.built.after.mir	Return the otherwise_block instead of passing it as argument	2024-07-09 22:47:35 +02:00
uniform_array_move_out.rs	turn rustc_box into an intrinsic	2025-01-03 12:01:31 +01:00
user_type_annotations.let_else.built.after.mir	Rollup merge of #143028 - dianne:let-else-storage, r=oli-obk,traviscross	2025-08-07 20:49:38 +10:00
user_type_annotations.let_else_bindless.built.after.mir	Give an AllocId to ConstValue::Slice.	2025-07-23 23:54:37 +00:00
user_type_annotations.let_init.built.after.mir	Add a mir-opt test that demonstrates user type annotations	2025-03-16 12:10:35 +11:00
user_type_annotations.let_init_bindless.built.after.mir	Add a mir-opt test that demonstrates user type annotations	2025-03-16 12:10:35 +11:00
user_type_annotations.let_uninit.built.after.mir	Split visit_primary_bindings into two variants	2025-03-16 12:10:35 +11:00
user_type_annotations.let_uninit_bindless.built.after.mir	Split visit_primary_bindings into two variants	2025-03-16 12:10:35 +11:00
user_type_annotations.match_assoc_const.built.after.mir	Add a mir-opt test that demonstrates user type annotations	2025-03-16 12:10:35 +11:00
user_type_annotations.match_assoc_const_range.built.after.mir	Add a mir-opt test that demonstrates user type annotations	2025-03-16 12:10:35 +11:00
user_type_annotations.rs	Add a mir-opt test that demonstrates user type annotations	2025-03-16 12:10:35 +11:00
while_storage.rs	Update mir-opt filechecks	2024-08-18 15:52:23 -07:00
while_storage.while_loop.PreCodegen.after.panic-abort.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00
while_storage.while_loop.PreCodegen.after.panic-unwind.mir	Bless *all* the mir-opt tests	2024-08-18 16:07:33 -07:00