bors cb40c25f6a Auto merge of #156139 - inq:minimize-reshell-perf, r=lcnr ...

Short-circuit `calculate_fallback_to_f32` when no float vars

Sharing a small fix.

When no unresolved variable is a `float_vid`, no f32 fallback can apply,
so we can skip `from_float_for_f32_root_vids` (which walks the proof tree
of every pending obligation under the new solver — O(N × M) on crates
with many large obligations).

On ReShell: stage1 wall-clock 2m35s → 1m46s (-49s, ~31%).

Context + profile breakdown will be linked at
rust-lang/trait-system-refactor-initiative#254 after this PR opens.

r? @lcnr

2026-05-04 14:02:18 +00:00

..

rustc

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rustc_abi

Rip out rustc_layout_scalar_valid_range_* attribute support

2026-05-03 10:59:52 +02:00

rustc_arena

Disallow ZST allocations with TypedArena.

2026-04-15 20:03:07 +10:00

rustc_ast

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_ast_ir

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_ast_lowering

Rollup merge of #156091 - Bryntet:move-tools, r=JonathanBrouwer

2026-05-03 00:25:34 -04:00

rustc_ast_passes

Rollup merge of #155980 - nnethercote:mv-feature-methods, r=TaKO8Ki

2026-04-30 22:28:33 -04:00

rustc_ast_pretty

Update AST pretty printing

2026-04-19 15:58:02 +09:00

rustc_attr_parsing

Rollup merge of #155433 - oli-obk:bye-bye-long-attribute, r=RalfJung,ShoyuVanilla

2026-05-03 16:33:22 +02:00

rustc_baked_icu_data

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rustc_borrowck

Rollup merge of #152216 - GTimothy:map-diagnostics-fix, r=JonathanBrouwer

2026-05-03 16:33:21 +02:00

rustc_builtin_macros

Invert dependency between rustc_error_messages and rustc_ast*.

2026-05-01 10:58:14 +10:00

rustc_codegen_cranelift

miri: remove retag statements, make typed copies retag implicitly instead

2026-05-02 17:40:33 +02:00

rustc_codegen_gcc

Rollup merge of #156003 - bjorn3:lto_refactors17, r=lqd

2026-04-30 22:28:29 -04:00

rustc_codegen_llvm

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_codegen_ssa

Rollup merge of #156065 - mejrs:spanculler, r=JonathanBrouwer

2026-05-03 00:25:33 -04:00

rustc_const_eval

Rip out rustc_layout_scalar_valid_range_* attribute support

2026-05-03 10:59:52 +02:00

rustc_data_structures

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_driver

…

rustc_driver_impl

Move four fields from ParseSess to Session.

2026-04-29 09:27:04 +10:00

rustc_error_codes

Support trailing self in import paths

2026-04-27 10:58:30 +08:00

rustc_error_messages

Rollup merge of #156021 - nnethercote:clean-up-some-traits, r=jackh726

2026-05-02 10:18:28 +02:00

rustc_errors

Remove unnecessary trait bound on Subdiagnostic.

2026-05-01 13:32:54 +10:00

rustc_expand

Rollup merge of #156091 - Bryntet:move-tools, r=JonathanBrouwer

2026-05-03 00:25:34 -04:00

rustc_feature

Auto merge of #156113 - JonathanBrouwer:rollup-yXpNY1L, r=JonathanBrouwer

2026-05-03 17:54:12 +00:00

rustc_fs_util

…

rustc_graphviz

…

rustc_hashes

…

rustc_hir

Rollup merge of #155433 - oli-obk:bye-bye-long-attribute, r=RalfJung,ShoyuVanilla

2026-05-03 16:33:22 +02:00

rustc_hir_analysis

Auto merge of #156113 - JonathanBrouwer:rollup-yXpNY1L, r=JonathanBrouwer

2026-05-03 17:54:12 +00:00

rustc_hir_id

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_hir_pretty

Change ItemKind::Trait to have named fields.

2026-04-24 19:03:16 +02:00

rustc_hir_typeck

Auto merge of #156139 - inq:minimize-reshell-perf, r=lcnr

2026-05-04 14:02:18 +00:00

rustc_incremental

Remove more spans from AttributeKind

2026-05-02 17:41:30 +02:00

rustc_index

Rollup merge of #155381 - nnethercote:fix-ChunkedBitSet-subtract, r=Zalathar

2026-04-28 05:37:21 -04:00

rustc_index_macros

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_infer

Rollup merge of #156021 - nnethercote:clean-up-some-traits, r=jackh726

2026-05-02 10:18:28 +02:00

rustc_interface

Rollup merge of #156065 - mejrs:spanculler, r=JonathanBrouwer

2026-05-03 00:25:33 -04:00

rustc_lexer

…

rustc_lint

Remove more spans from AttributeKind

2026-05-02 17:41:30 +02:00

rustc_lint_defs

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_llvm

Rollup merge of #155692 - fneddy:fix_naked-dead-code-elimination, r=folkertdev

2026-04-28 20:24:33 +02:00

rustc_log

…

rustc_macros

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_metadata

Remove more spans from AttributeKind

2026-05-02 17:41:30 +02:00

rustc_middle

Shift lift calls outward.

2026-05-04 14:05:16 +10:00

rustc_mir_build

Rollup merge of #155433 - oli-obk:bye-bye-long-attribute, r=RalfJung,ShoyuVanilla

2026-05-03 16:33:22 +02:00

rustc_mir_dataflow

miri: remove retag statements, make typed copies retag implicitly instead

2026-05-02 17:40:33 +02:00

rustc_mir_transform

Rollup merge of #156065 - mejrs:spanculler, r=JonathanBrouwer

2026-05-03 00:25:33 -04:00

rustc_monomorphize

Auto merge of #155491 - ohadravid:faster-storage-in-copyprop-and-gvn, r=saethlin

2026-04-21 05:35:16 +00:00

rustc_next_trait_solver

Auto merge of #155767 - adwinwhite:eager-norm-outside, r=lcnr

2026-05-02 20:56:41 +00:00

rustc_parse

Rollup merge of #156031 - nnethercote:lex_token_trees, r=chenyukang

2026-05-01 13:10:38 +02:00

rustc_parse_format

Auto merge of #152277 - gurry:114865-ice-format-args, r=chenyukang

2026-05-03 03:24:52 +00:00

rustc_passes

Rollup merge of #155433 - oli-obk:bye-bye-long-attribute, r=RalfJung,ShoyuVanilla

2026-05-03 16:33:22 +02:00

rustc_pattern_analysis

Remove unused Captures trait.

2026-05-01 13:32:54 +10:00

rustc_privacy

privacy: Assert that compared visibilities are (usually) ordered

2026-04-23 18:22:48 +03:00

rustc_proc_macro

…

rustc_public

miri: remove retag statements, make typed copies retag implicitly instead

2026-05-02 17:40:33 +02:00

rustc_public_bridge

Make lifting infallible.

2026-04-30 16:53:10 +10:00

rustc_query_impl

Refactor FnDecl and FnSig flags into packed structs

2026-04-16 07:08:08 +10:00

rustc_resolve

Rollup merge of #156091 - Bryntet:move-tools, r=JonathanBrouwer

2026-05-03 00:25:34 -04:00

rustc_sanitizers

AliasTermTy refactor: fixup compiler

2026-04-21 12:28:22 +02:00

rustc_serialize

update thin-vec

2026-04-08 21:09:07 +02:00

rustc_session

miri: remove retag statements, make typed copies retag implicitly instead

2026-05-02 17:40:33 +02:00

rustc_span

Auto merge of #156113 - JonathanBrouwer:rollup-yXpNY1L, r=JonathanBrouwer

2026-05-03 17:54:12 +00:00

rustc_symbol_mangling

Remove unused 'tcx lifetime from trait Print.

2026-05-04 14:04:55 +10:00

rustc_target

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_thread_pool

Const initialize LOCK_LATCH thread local

2026-04-23 16:06:24 +03:00

rustc_trait_selection

Remove silly FmtPrinter<'tcx, 'tcx> instance.

2026-05-04 15:50:46 +10:00

rustc_traits

-Znext-solver Ignore region constraints from the nested goals in leakcheck

2026-05-02 00:11:43 +09:00

rustc_transmute

Rip out rustc_layout_scalar_valid_range_* attribute support

2026-05-03 10:59:52 +02:00

rustc_ty_utils

Rip out rustc_layout_scalar_valid_range_* attribute support

2026-05-03 10:59:52 +02:00

rustc_type_ir

Rename the HashStable* trait/derives as StableHash*.

2026-05-02 10:16:40 +02:00

rustc_type_ir_macros

Make lifting infallible.

2026-04-30 16:53:10 +10:00

rustc_windows_rc

…