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Guillaume Gomez 095ca33bb6
Rollup merge of #128149 - RalfJung:nontemporal_store, r=jieyouxu,Amanieu,Jubilee 
nontemporal_store: make sure that the intrinsic is truly just a hint

The `!nontemporal` flag for stores in LLVM *sounds* like it is just a hint, but actually, it is not -- at least on x86, non-temporal stores need very special treatment by the programmer or else the Rust memory model breaks down. LLVM still treats these stores as-if they were normal stores for optimizations, which is [highly dubious](https://github.com/llvm/llvm-project/issues/64521). Let's avoid all that dubiousness by making our own non-temporal stores be truly just a hint, which is possible on some targets (e.g. ARM). On all other targets, non-temporal stores become regular stores.

~~Blocked on https://github.com/rust-lang/stdarch/pull/1541 propagating to the rustc repo, to make sure the `_mm_stream` intrinsics are unaffected by this change.~~

Fixes https://github.com/rust-lang/rust/issues/114582
Cc `@Amanieu` `@workingjubilee`
2024-08-12 17:09:14 +02:00
..
rustc Link std statically in rustc_driver 2024-08-11 04:16:53 +02:00
rustc_abi interpret: simplify pointer arithmetic logic 2024-08-01 14:25:19 +02:00
rustc_arena Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_ast Use more slice patterns inside the compiler 2024-08-07 13:37:52 +02:00
rustc_ast_ir Use dep: for crate dependencies 2024-07-15 12:40:10 -04:00
rustc_ast_lowering Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_ast_passes Rollup merge of #127921 - spastorino:stabilize-unsafe-extern-blocks, r=compiler-errors 2024-08-03 20:51:51 +02:00
rustc_ast_pretty Use more slice patterns inside the compiler 2024-08-07 13:37:52 +02:00
rustc_attr Use more slice patterns inside the compiler 2024-08-07 13:37:52 +02:00
rustc_baked_icu_data
rustc_borrowck Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_builtin_macros Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_codegen_cranelift Rollup merge of #128149 - RalfJung:nontemporal_store, r=jieyouxu,Amanieu,Jubilee 2024-08-12 17:09:14 +02:00
rustc_codegen_gcc Rollup merge of #128149 - RalfJung:nontemporal_store, r=jieyouxu,Amanieu,Jubilee 2024-08-12 17:09:14 +02:00
rustc_codegen_llvm Rollup merge of #128149 - RalfJung:nontemporal_store, r=jieyouxu,Amanieu,Jubilee 2024-08-12 17:09:14 +02:00
rustc_codegen_ssa Auto merge of #128400 - petrochenkov:nowhole3, r=bjorn3 2024-08-10 18:57:58 +00:00
rustc_const_eval Rename struct_tail_erasing_lifetimes to struct_tail_for_codegen 2024-08-08 12:15:16 -04:00
rustc_data_structures Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_driver
rustc_driver_impl Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_error_codes Update E0517 message to reflect RFC 2195. 2024-08-07 23:11:30 -05:00
rustc_error_messages Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_errors Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_expand Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_feature Stabilize min_exhaustive_patterns 2024-08-10 12:07:17 +02:00
rustc_fluent_macro Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_fs_util Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_graphviz Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_hir Rollup merge of #128377 - veera-sivarajan:fix-128249, r=davidtwco 2024-08-06 20:23:39 +02:00
rustc_hir_analysis Rollup merge of #128910 - estebank:assoc-fn, r=compiler-errors 2024-08-10 16:23:55 +02:00
rustc_hir_pretty Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_hir_typeck Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_incremental Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_index Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_index_macros
rustc_infer Use Vec in instantiate_binder_with_fresh_vars 2024-07-29 14:38:33 +03:00
rustc_interface Rollup merge of #128851 - compiler-errors:validate-mir-opt-mir, r=matthiaskrgr 2024-08-09 00:03:39 +02:00
rustc_lexer Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_lint Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_lint_defs Disallow setting built-in cfgs via set the command-line 2024-08-07 14:08:34 +02:00
rustc_llvm Auto merge of #128371 - andjo403:rangeAttribute, r=nikic 2024-08-12 10:20:00 +00:00
rustc_log Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_macros Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_metadata Ask the user to use feature(rustc_private) when linking to rustc_driver 2024-08-11 04:16:53 +02:00
rustc_middle Auto merge of #128927 - GuillaumeGomez:rollup-ei2lr0f, r=GuillaumeGomez 2024-08-10 15:13:38 +00:00
rustc_mir_build Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_mir_dataflow Stop using MoveDataParamEnv for places that don't need a param-env 2024-07-29 11:59:47 -04:00
rustc_mir_transform Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_monomorphize Rename struct_tail_erasing_lifetimes to struct_tail_for_codegen 2024-08-08 12:15:16 -04:00
rustc_next_trait_solver Don't implement AsyncFn for FnDef/FnPtr that wouldnt implement Fn 2024-08-08 14:07:31 -04:00
rustc_parse Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_parse_format Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_passes Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_pattern_analysis Rollup merge of #128536 - Zalathar:print-cleanup, r=Nadrieril 2024-08-11 07:51:50 +02:00
rustc_privacy Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_query_impl Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_query_system Use more slice patterns inside the compiler 2024-08-07 13:37:52 +02:00
rustc_resolve Rollup merge of #128875 - bvanjoi:cleanup-import-used, r=petrochenkov 2024-08-11 07:51:52 +02:00
rustc_sanitizers Use ParamEnv::reveal_all in CFI 2024-08-02 23:24:50 -04:00
rustc_serialize Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_session Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_smir Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_span Ask the user to use feature(rustc_private) when linking to rustc_driver 2024-08-11 04:16:53 +02:00
rustc_symbol_mangling Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_target Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_trait_selection Rollup merge of #128762 - fmease:use-more-slice-pats, r=compiler-errors 2024-08-11 07:51:51 +02:00
rustc_traits Reformat use declarations. 2024-07-29 08:26:52 +10:00
rustc_transmute Update std and compiler 2024-08-10 12:07:17 +02:00
rustc_ty_utils Rename struct_tail_erasing_lifetimes to struct_tail_for_codegen 2024-08-08 12:15:16 -04:00
rustc_type_ir Update std and compiler 2024-08-10 12:07:17 +02:00
rustc_type_ir_macros Reformat use declarations. 2024-07-29 08:26:52 +10:00
stable_mir Reformat use declarations. 2024-07-29 08:26:52 +10:00