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Michael Benfield a17193dbb9 Enable AutoFDO. 
This largely involves implementing the options debug-info-for-profiling
and profile-sample-use and forwarding them on to LLVM.

AutoFDO can be used on x86-64 Linux like this:
rustc -O -Cdebug-info-for-profiling main.rs -o main
perf record -b ./main
create_llvm_prof --binary=main --out=code.prof
rustc -O -Cprofile-sample-use=code.prof main.rs -o main2

Now `main2` will have feedback directed optimization applied to it.

The create_llvm_prof tool can be obtained from this github repository:
https://github.com/google/autofdo

Fixes #64892.
2021-10-06 19:36:52 +00:00
..
rustc Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_apfloat Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_arena Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_ast Rollup merge of #89487 - FabianWolff:issue-89396, r=petrochenkov 2021-10-04 21:12:42 -07:00
rustc_ast_lowering Add desugaring mark to while loop 2021-10-02 17:41:14 -05:00
rustc_ast_passes Rollup merge of #89494 - FabianWolff:issue-84075, r=davidtwco 2021-10-04 21:12:43 -07:00
rustc_ast_pretty Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_attr Move some HashStable impls. 2021-10-03 16:08:50 +02:00
rustc_borrowck Rollup merge of #89504 - Aaron1011:rpit-nll-static, r=nikomatsakis 2021-10-04 23:56:24 -07:00
rustc_builtin_macros Practice diagnostic message convention 2021-10-03 16:16:28 +09:00
rustc_codegen_cranelift Move rustc_middle::middle::cstore to rustc_session. 2021-10-03 16:08:51 +02:00
rustc_codegen_gcc Move rustc_middle::middle::cstore to rustc_session. 2021-10-03 16:08:51 +02:00
rustc_codegen_llvm Enable AutoFDO. 2021-10-06 19:36:52 +00:00
rustc_codegen_ssa Enable AutoFDO. 2021-10-06 19:36:52 +00:00
rustc_const_eval Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_data_structures Rollup merge of #87993 - kornelski:try_reserve_stable, r=joshtriplett 2021-10-04 21:12:33 -07:00
rustc_driver Auto merge of #89363 - oli-obk:in_tracing_we_trust, r=Mark-Simulacrum 2021-10-05 12:52:43 +00:00
rustc_error_codes Consistently use 'supertrait'. 2021-10-02 08:05:44 +07:00
rustc_errors Rollup merge of #89046 - oli-obk:fix_oflo, r=estebank 2021-09-22 19:03:22 +02:00
rustc_expand Improve help for recursion limit errors 2021-09-28 22:17:13 +02:00
rustc_feature Stabilize const_panic 2021-10-04 02:33:33 -04:00
rustc_fs_util Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_graphviz Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_hir Move some HashStable impls. 2021-10-03 16:08:50 +02:00
rustc_hir_pretty Avoid more invocations of hir_crate query. 2021-09-29 23:16:47 +02:00
rustc_incremental Avoid more invocations of hir_crate query. 2021-09-29 23:16:47 +02:00
rustc_index Rollup merge of #89508 - jhpratt:stabilize-const_panic, r=joshtriplett 2021-10-04 13:58:17 -07:00
rustc_infer Make diangostic item names consistent 2021-10-02 19:38:19 -05:00
rustc_interface Enable AutoFDO. 2021-10-06 19:36:52 +00:00
rustc_lexer Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_lint Rollup merge of #89473 - FabianWolff:issue-89469, r=joshtriplett 2021-10-04 21:12:38 -07:00
rustc_lint_defs Make proc_macro_derive_resolution_fallback a future-breakage lint 2021-10-04 11:05:48 -05:00
rustc_llvm Enable AutoFDO. 2021-10-06 19:36:52 +00:00
rustc_macros Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_metadata Rollup merge of #89546 - joshtriplett:grow-metadata-faster, r=petrochenkov 2021-10-05 12:52:49 -07:00
rustc_middle Auto merge of #89323 - estebank:derive-binop, r=petrochenkov 2021-10-06 06:20:25 +00:00
rustc_mir_build Rollup merge of #89441 - Nadrieril:fix-89393, r=tmandry 2021-10-01 14:46:52 -07:00
rustc_mir_dataflow Rollup merge of #89532 - ecstatic-morse:maybe-live-locals-enum, r=oli-obk,tmiasko 2021-10-05 12:52:48 -07:00
rustc_mir_transform Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_monomorphize Avoid more invocations of hir_crate query. 2021-09-29 23:16:47 +02:00
rustc_parse Use TokenKind::similar_tokens() 2021-10-04 22:13:00 +02:00
rustc_parse_format Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_passes Rollup merge of #89442 - GuillaumeGomez:duplicated-doc-alias, r=estebank 2021-10-05 12:52:45 -07:00
rustc_plugin_impl Move rustc_middle::middle::cstore to rustc_session. 2021-10-03 16:08:51 +02:00
rustc_privacy Auto merge of #89405 - GuillaumeGomez:fix-clippy-lints, r=cjgillot 2021-10-02 10:52:09 +00:00
rustc_query_impl Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_query_system Add some inlining. 2021-10-03 16:08:57 +02:00
rustc_resolve Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_save_analysis Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister 2021-10-05 09:45:11 +00:00
rustc_serialize Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_session Enable AutoFDO. 2021-10-06 19:36:52 +00:00
rustc_span Auto merge of #88175 - camsteffen:let-desugar-span, r=Manishearth 2021-10-03 21:44:10 +00:00
rustc_symbol_mangling Remove re-export. 2021-10-03 16:08:54 +02:00
rustc_target Remove various unused feature gates 2021-10-02 19:09:18 +02:00
rustc_trait_selection Auto merge of #89323 - estebank:derive-binop, r=petrochenkov 2021-10-06 06:20:25 +00:00
rustc_traits Improve cause information for NLL higher-ranked errors 2021-09-27 10:23:45 -05:00
rustc_ty_utils Remove various unused feature gates 2021-10-02 19:09:18 +02:00
rustc_type_ir Migrate to 2021 2021-09-20 22:21:42 -04:00
rustc_typeck Auto merge of #89323 - estebank:derive-binop, r=petrochenkov 2021-10-06 06:20:25 +00:00