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rustc_target: add known safe s390x target features This pull request adds known safe target features for s390x (aka IBM Z systems). Currently, these features are unstable since stabilizing the target features requires submitting proposals. The `vector` feature was added in IBM Z13 (`arch11`), and this is a SIMD feature for the newer IBM Z systems. The `backchain` attribute is the IBM Z way of adding frame pointers like unwinding capabilities (the "frame-pointer" switch on IBM Z and IBM POWER platforms will add _emulated_ frame pointers to the binary, which profilers can't use for unwinding the stack). Both attributes can be applied at the LLVM module or function levels. However, the `backchain` attribute has to be enabled for all the functions in the call stack to get a successful unwind process. |
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| .. | ||
| analyze_source_file | ||
| edit_distance | ||
| source_map | ||
| symbol | ||
| analyze_source_file.rs | ||
| caching_source_map_view.rs | ||
| def_id.rs | ||
| edit_distance.rs | ||
| edition.rs | ||
| fatal_error.rs | ||
| hygiene.rs | ||
| lib.rs | ||
| profiling.rs | ||
| source_map.rs | ||
| span_encoding.rs | ||
| symbol.rs | ||
| tests.rs | ||