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bors dfa88b328f Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 
Implement intrinsics with fallback bodies

fixes #93145 (though we can port many more intrinsics)
cc #63585

The way this works is that the backend logic for generating custom code for intrinsics has been made fallible. The only failure path is "this intrinsic is unknown". The `Instance` (that was `InstanceDef::Intrinsic`) then gets converted to `InstanceDef::Item`, which represents the fallback body. A regular function call to that body is then codegenned. This is currently implemented for

* codegen_ssa (so llvm and gcc)
* codegen_cranelift

other backends will need to adjust, but they can just keep doing what they were doing if they prefer (though adding new intrinsics to the compiler will then require them to implement them, instead of getting the fallback body).

cc `@scottmcm` `@WaffleLapkin`

### todo

* [ ] miri support
* [x] default intrinsic name to name of function instead of requiring it to be specified in attribute
* [x] make sure that the bodies are always available (must be collected for metadata)
2024-02-16 09:53:01 +00:00
..
rustc Clean up rustc_*/Cargo.toml. 2023-10-30 08:46:02 +11:00
rustc_abi Fix rustc_abi build on stable 2024-01-16 21:15:31 +01:00
rustc_arena Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_ast Rollup merge of #121109 - nnethercote:TyKind-Err-guar-2, r=oli-obk 2024-02-16 00:27:32 +01:00
rustc_ast_lowering Rollup merge of #121109 - nnethercote:TyKind-Err-guar-2, r=oli-obk 2024-02-16 00:27:32 +01:00
rustc_ast_passes Add an ErrorGuaranteed to ast::TyKind::Err. 2024-02-15 09:35:11 +11:00
rustc_ast_pretty Rollup merge of #121109 - nnethercote:TyKind-Err-guar-2, r=oli-obk 2024-02-16 00:27:32 +01:00
rustc_attr Use generic NonZero internally. 2024-02-15 08:09:42 +01:00
rustc_baked_icu_data Bump cfg(bootstrap)s 2023-11-15 19:41:28 -05:00
rustc_borrowck Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_builtin_macros Add ErrorGuaranteed to ast::LitKind::Err, token::LitKind::Err. 2024-02-15 14:46:08 +11:00
rustc_codegen_cranelift Give const_deallocate a default body 2024-02-12 17:52:05 +00:00
rustc_codegen_gcc Teach llvm backend how to fall back to default bodies 2024-02-12 17:50:39 +00:00
rustc_codegen_llvm Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_codegen_ssa Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_const_eval Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_data_structures Auto merge of #120486 - reitermarkus:use-generic-nonzero, r=dtolnay 2024-02-16 07:46:31 +00:00
rustc_driver Bump cfg(bootstrap)s 2023-11-15 19:41:28 -05:00
rustc_driver_impl Rollup merge of #120693 - nnethercote:invert-diagnostic-lints, r=davidtwco 2024-02-09 14:41:50 +01:00
rustc_error_codes Dejargnonize subst 2024-02-12 15:46:35 +09:00
rustc_error_messages Remove good_path_delayed_bug. 2024-02-13 09:33:35 +11:00
rustc_errors Auto merge of #120486 - reitermarkus:use-generic-nonzero, r=dtolnay 2024-02-16 07:46:31 +00:00
rustc_expand Rollup merge of #121109 - nnethercote:TyKind-Err-guar-2, r=oli-obk 2024-02-16 00:27:32 +01:00
rustc_feature Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_fluent_macro Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_fs_util Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_graphviz Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_hir Rollup merge of #120958 - ShoyuVanilla:remove-subst, r=oli-obk 2024-02-12 23:18:54 +01:00
rustc_hir_analysis Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_hir_pretty Lower anonymous structs or unions to HIR 2024-02-12 12:47:23 +08:00
rustc_hir_typeck Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_incremental Make impl_trait_ref into a query also returning more information about the impl 2024-02-12 09:42:41 +00:00
rustc_index Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_index_macros Step all bootstrap cfgs forward 2024-02-08 07:44:34 -05:00
rustc_infer Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_interface Auto merge of #120486 - reitermarkus:use-generic-nonzero, r=dtolnay 2024-02-16 07:46:31 +00:00
rustc_lexer Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_lint Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_lint_defs Bump indexmap 2024-02-13 21:03:34 +00:00
rustc_llvm Pin cc version 2024-02-13 21:13:06 +00:00
rustc_log Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_macros Rollup merge of #120693 - nnethercote:invert-diagnostic-lints, r=davidtwco 2024-02-09 14:41:50 +01:00
rustc_metadata Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_middle Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_mir_build Add ErrorGuaranteed to ast::LitKind::Err, token::LitKind::Err. 2024-02-15 14:46:08 +11:00
rustc_mir_dataflow Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_mir_transform Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_monomorphize Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_next_trait_solver Move visitable bounds up into interner 2024-02-13 15:53:15 +00:00
rustc_parse Rollup merge of #121109 - nnethercote:TyKind-Err-guar-2, r=oli-obk 2024-02-16 00:27:32 +01:00
rustc_parse_format Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_passes Auto merge of #120486 - reitermarkus:use-generic-nonzero, r=dtolnay 2024-02-16 07:46:31 +00:00
rustc_pattern_analysis Auto merge of #120991 - matthiaskrgr:rollup-f8kw2st, r=matthiaskrgr 2024-02-13 00:31:53 +00:00
rustc_privacy Dejargnonize subst 2024-02-12 15:46:35 +09:00
rustc_query_impl Replace NonZero::<_>::new with NonZero::new. 2024-02-15 08:09:42 +01:00
rustc_query_system Use generic NonZero internally. 2024-02-15 08:09:42 +01:00
rustc_resolve Rollup merge of #121084 - oli-obk:create_def_forever_red2, r=WaffleLapkin 2024-02-15 09:20:20 +01:00
rustc_serialize Replace NonZero::<_>::new with NonZero::new. 2024-02-15 08:09:42 +01:00
rustc_session Auto merge of #120486 - reitermarkus:use-generic-nonzero, r=dtolnay 2024-02-16 07:46:31 +00:00
rustc_smir Rollup merge of #120982 - momvart:smir-61-foreign_kind, r=oli-obk 2024-02-15 09:20:18 +01:00
rustc_span Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_symbol_mangling Rollup merge of #120958 - ShoyuVanilla:remove-subst, r=oli-obk 2024-02-12 23:18:54 +01:00
rustc_target Update aarch64 target feature docs to match LLVM 2024-02-15 14:36:29 +00:00
rustc_trait_selection Rollup merge of #121119 - compiler-errors:async-fn-kind-errs, r=oli-obk 2024-02-16 00:27:33 +01:00
rustc_traits Dejargnonize subst 2024-02-12 15:46:35 +09:00
rustc_transmute Invert diagnostic lints. 2024-02-06 13:12:33 +11:00
rustc_ty_utils Auto merge of #120500 - oli-obk:intrinsics2.0, r=WaffleLapkin 2024-02-16 09:53:01 +00:00
rustc_type_ir Move visitable bounds up into interner 2024-02-13 15:53:15 +00:00
stable_mir Rollup merge of #120982 - momvart:smir-61-foreign_kind, r=oli-obk 2024-02-15 09:20:18 +01:00