Chris Denton e082bf341f Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau ... Implement the internal feature `cfg_target_has_reliable_f16_f128` Support for `f16` and `f128` is varied across targets, backends, and backend versions. Eventually we would like to reach a point where all backends support these approximately equally, but until then we have to work around some of these nuances of support being observable. Introduce the `cfg_target_has_reliable_f16_f128` internal feature, which provides the following new configuration gates: * `cfg(target_has_reliable_f16)` * `cfg(target_has_reliable_f16_math)` * `cfg(target_has_reliable_f128)` * `cfg(target_has_reliable_f128_math)` `reliable_f16` and `reliable_f128` indicate that basic arithmetic for the type works correctly. The `_math` versions indicate that anything relying on `libm` works correctly, since sometimes this hits a separate class of codegen bugs. These options match configuration set by the build script at [1]. The logic for LLVM support is duplicated as-is from the same script. There are a few possible updates that will come as a follow up. The config introduced here is not planned to ever become stable, it is only intended to replace the build scripts for `std` tests and `compiler-builtins` that don't have any way to configure based on the codegen backend. MCP: https://github.com/rust-lang/compiler-team/issues/866 Closes: https://github.com/rust-lang/compiler-team/issues/866 [1]: 555e1d0386/library/std/build.rs (L84-L186) --- The second commit makes use of this config to replace `cfg_{f16,f128}{,_math}` in `library/`. I omitted providing a `cfg(bootstrap)` configuration to keep things simpler since the next beta branch is in two weeks. try-job: aarch64-gnu try-job: i686-msvc-1 try-job: test-various try-job: x86_64-gnu try-job: x86_64-msvc-ext2		2025-04-28 23:29:17 +00:00
..
rustc	Revert "Use workspace lints for crates in compiler/ #138084"	2025-03-10 18:12:47 +08:00
rustc_abi	Initial UnsafePinned/UnsafeUnpin impl [Part 1: Libs]	2025-04-13 01:11:04 -04:00
rustc_arena	Remove #![warn(unreachable_pub)] from all compiler/ crates.	2025-03-11 13:14:21 +11:00
rustc_ast	Auto merge of #140282 - matthiaskrgr:rollup-g6ze4jj, r=matthiaskrgr	2025-04-25 12:27:16 +00:00
rustc_ast_ir	Use -Wunused_crate_dependencies for compiler crates.	2025-03-20 08:59:43 +11:00
rustc_ast_lowering	Auto merge of #140282 - matthiaskrgr:rollup-g6ze4jj, r=matthiaskrgr	2025-04-25 12:27:16 +00:00
rustc_ast_passes	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_ast_pretty	Inline and remove three pretty-printer methods.	2025-04-28 15:51:27 +10:00
rustc_attr_data_structures	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_attr_parsing	Auto merge of #140282 - matthiaskrgr:rollup-g6ze4jj, r=matthiaskrgr	2025-04-25 12:27:16 +00:00
rustc_baked_icu_data	Add unreachable_pub to RUSTC_LINT_FLAGS for compiler/ crates.	2025-03-11 13:14:21 +11:00
rustc_borrowck	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_builtin_macros	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_codegen_cranelift	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_codegen_gcc	Implement the internal feature cfg_target_has_reliable_f16_f128	2025-04-27 19:58:44 +00:00
rustc_codegen_llvm	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_codegen_ssa	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_const_eval	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_data_structures	Update !DynSend and !DynSync platform impls	2025-04-21 21:23:32 -07:00
rustc_driver	Remove recursion_limit increases.	2025-04-02 16:25:27 +11:00
rustc_driver_impl	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_error_codes	stabilize naked_functions	2025-04-20 11:18:38 +02:00
rustc_error_messages	update cfgs	2025-04-09 12:29:59 +01:00
rustc_errors	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_expand	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_feature	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_fluent_macro	Replace proc_macro::SourceFile by Span::{file, local_file}.	2025-04-11 15:07:08 +02:00
rustc_fs_util	Retry if creating temp fails with access denied	2025-04-25 11:28:36 +00:00
rustc_graphviz	Remove #![warn(unreachable_pub)] from all compiler/ crates.	2025-03-11 13:14:21 +11:00
rustc_hashes	Revert "Use workspace lints for crates in compiler/ #138084"	2025-03-10 18:12:47 +08:00
rustc_hir	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_hir_analysis	Rollup merge of #140302 - compiler-errors:inline_asm-bug, r=lcnr	2025-04-28 23:29:16 +00:00
rustc_hir_pretty	Inline and remove three pretty-printer methods.	2025-04-28 15:51:27 +10:00
rustc_hir_typeck	Rollup merge of #140302 - compiler-errors:inline_asm-bug, r=lcnr	2025-04-28 23:29:16 +00:00
rustc_incremental	Replace infallible name_or_empty methods with fallible name methods.	2025-04-17 09:50:52 +10:00
rustc_index	Add copy_within to IndexSlice	2025-04-15 10:44:28 -04:00
rustc_index_macros	In rustc_mir_tranform, iterate over index newtypes instead of ints	2025-04-12 11:53:07 +00:00
rustc_infer	Rollup merge of #140249 - BoxyUwU:remove_weak_alias_terminology, r=oli-obk	2025-04-28 13:30:45 +02:00
rustc_interface	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_lexer	Replace rustc_lexer/unescape with rustc-literal-escaper crate	2025-04-04 14:44:45 +02:00
rustc_lint	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_lint_defs	Update lint-docs to default to Rust 2024	2025-04-26 14:08:58 -07:00
rustc_llvm	Rollup merge of #139308 - Shourya742:2025-03-29-add-autodiff-inline, r=ZuseZ4	2025-04-28 23:29:14 +00:00
rustc_log	Use -Wunused_crate_dependencies for compiler crates.	2025-03-20 08:59:43 +11:00
rustc_macros	Rollup merge of #140202 - est31:let_chains_feature_compiler, r=lcnr	2025-04-25 07:50:25 +02:00
rustc_metadata	Rollup merge of #140086 - ChrisDenton:backoff, r=petrochenkov	2025-04-26 07:13:07 +02:00
rustc_middle	Rollup merge of #140022 - dianne:box-deref-pats, r=Nadrieril	2025-04-28 23:29:15 +00:00
rustc_mir_build	Rollup merge of #140022 - dianne:box-deref-pats, r=Nadrieril	2025-04-28 23:29:15 +00:00
rustc_mir_dataflow	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_mir_transform	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_monomorphize	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_next_trait_solver	Rollup merge of #140276 - compiler-errors:typeof-less-eagerly, r=lcnr	2025-04-28 23:29:16 +00:00
rustc_parse	Rollup merge of #140272 - Kivooeo:new-fix-four, r=est31	2025-04-26 07:13:08 +02:00
rustc_parse_format	Update rustc-literal-escaper version to 0.0.2	2025-04-04 22:26:10 +02:00
rustc_passes	Auto merge of #123948 - azhogin:azhogin/async-drop, r=oli-obk	2025-04-28 14:14:26 +00:00
rustc_pattern_analysis	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_privacy	Rollup merge of #140249 - BoxyUwU:remove_weak_alias_terminology, r=oli-obk	2025-04-28 13:30:45 +02:00
rustc_query_impl	Auto merge of #124141 - nnethercote:rm-Nonterminal-and-TokenKind-Interpolated, r=petrochenkov	2025-04-14 03:56:55 +00:00
rustc_query_system	Auto merge of #139756 - Zoxc:out-of-order-dep-graph, r=oli-obk	2025-04-25 15:38:58 +00:00
rustc_resolve	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_sanitizers	Make #![feature(let_chains)] bootstrap conditional in compiler/	2025-04-23 16:40:30 +02:00
rustc_serialize	Zero the buffer passed from write_with	2025-04-25 07:14:27 +02:00
rustc_session	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_smir	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_span	Rollup merge of #140323 - tgross35:cfg-unstable-float, r=Urgau	2025-04-28 23:29:17 +00:00
rustc_symbol_mangling	AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.	2025-04-28 16:23:13 +07:00
rustc_target	Rollup merge of #140202 - est31:let_chains_feature_compiler, r=lcnr	2025-04-25 07:50:25 +02:00
rustc_trait_selection	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_traits	Remove weak alias terminology	2025-04-24 11:59:20 +01:00
rustc_transmute	transmutability: Support char, NonZeroXxx	2025-04-25 12:55:50 -07:00
rustc_ty_utils	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_type_ir	Auto merge of #140388 - GuillaumeGomez:rollup-aj9o3ch, r=GuillaumeGomez	2025-04-28 17:22:11 +00:00
rustc_type_ir_macros	Split TypeFolder and FallibleTypeFolder	2025-04-15 18:30:35 +00:00
stable_mir	let rustc_smir host stable_mir for refactoring	2025-04-05 18:23:07 +08:00