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![]() add more `s390x` target features
Closes #88937
tracking issue: https://github.com/rust-lang/rust/issues/130869
The target feature names are, right now, just the llvm target feature names. These mostly line up well with the names of [Facility Indications](https://publibfp.dhe.ibm.com/epubs/pdf/a227832d.pdf#page=301) names. The linux kernel (and `/proc/cpuinfo`) uses shorter, more cryptic names. (e.g. "vector" is `vx`). We can deviate from the llvm names, but the CPU vendor (IBM) does not appear to use e.g. `vx` for what they call `vector`.
There are a number of implied target features between the vector facilities (based on the [Facility Indications](https://publibfp.dhe.ibm.com/epubs/pdf/a227832d.pdf#page=301) table):
- 129 The vector facility for z/Architecture is installed in the z/Architecture architectural mode.
- 134 The vector packed decimal facility is installed in the z/Architecture architectural mode. When bit 134 is one, bit 129 is also one.
- 135 The vector enhancements facility 1 is installed in the z/Architecture architectural mode. When bit 135 is one, bit 129 is also one.
- 148 The vector-enhancements facility 2 is installed in the z/Architecture architectural mode. When bit 148 is one, bits 129 and 135 are also one.
- 152 The vector-packed-decimal-enhancement facility 1 is installed in the z/Architecture architectural mode. When bit 152 is one, bits 129 and 134 are also one.
- 165 The neural-network-processing-assist facility is installed in the z/Architecture architectural mode. When bit 165 is one, bit 129 is also one.
- 192 The vector-packed-decimal-enhancement facility 2 is installed in the z/Architecture architectural mode. When bit 192 is one, bits 129, 134, and 152 are also one.
The remaining facilities do not have any implied target features (that we provide):
- 45 The distinct-operands, fast-BCR-serialization, high-word, and population-count facilities, the interlocked-access facility 1, and the load/store-oncondition facility 1 are installed in the z/Architecture architectural mode.
- 73 The transactional-execution facility is installed in the z/Architecture architectural mode. Bit 49 is one when bit 73 is one.
- 133 The guarded-storage facility is installed in the z/Architecture architectural mode.
- 150 The enhanced-sort facility is installed in the z/Architecture architectural mode.
- 151 The DEFLATE-conversion facility is installed in the z/Architecture architectural mode.
The added target features are those that have ISA implications, can be queried at runtime, and have LLVM support. LLVM [defines more target features](
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rustc | ||
rustc_abi | ||
rustc_arena | ||
rustc_ast | ||
rustc_ast_ir | ||
rustc_ast_lowering | ||
rustc_ast_passes | ||
rustc_ast_pretty | ||
rustc_attr_data_structures | ||
rustc_attr_parsing | ||
rustc_baked_icu_data | ||
rustc_borrowck | ||
rustc_builtin_macros | ||
rustc_codegen_cranelift | ||
rustc_codegen_gcc | ||
rustc_codegen_llvm | ||
rustc_codegen_ssa | ||
rustc_const_eval | ||
rustc_data_structures | ||
rustc_driver | ||
rustc_driver_impl | ||
rustc_error_codes | ||
rustc_error_messages | ||
rustc_errors | ||
rustc_expand | ||
rustc_feature | ||
rustc_fluent_macro | ||
rustc_fs_util | ||
rustc_graphviz | ||
rustc_hashes | ||
rustc_hir | ||
rustc_hir_analysis | ||
rustc_hir_pretty | ||
rustc_hir_typeck | ||
rustc_incremental | ||
rustc_index | ||
rustc_index_macros | ||
rustc_infer | ||
rustc_interface | ||
rustc_lexer | ||
rustc_lint | ||
rustc_lint_defs | ||
rustc_llvm | ||
rustc_log | ||
rustc_macros | ||
rustc_metadata | ||
rustc_middle | ||
rustc_mir_build | ||
rustc_mir_dataflow | ||
rustc_mir_transform | ||
rustc_monomorphize | ||
rustc_next_trait_solver | ||
rustc_parse | ||
rustc_parse_format | ||
rustc_passes | ||
rustc_pattern_analysis | ||
rustc_privacy | ||
rustc_query_impl | ||
rustc_query_system | ||
rustc_resolve | ||
rustc_sanitizers | ||
rustc_serialize | ||
rustc_session | ||
rustc_smir | ||
rustc_span | ||
rustc_symbol_mangling | ||
rustc_target | ||
rustc_trait_selection | ||
rustc_traits | ||
rustc_transmute | ||
rustc_ty_utils | ||
rustc_type_ir | ||
rustc_type_ir_macros | ||
stable_mir |