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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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| .. | ||
| back | ||
| coverageinfo | ||
| debuginfo | ||
| llvm | ||
| abi.rs | ||
| allocator.rs | ||
| asm.rs | ||
| attributes.rs | ||
| base.rs | ||
| builder.rs | ||
| callee.rs | ||
| common.rs | ||
| consts.rs | ||
| context.rs | ||
| declare.rs | ||
| errors.rs | ||
| intrinsic.rs | ||
| lib.rs | ||
| llvm_util.rs | ||
| mono_item.rs | ||
| type_.rs | ||
| type_of.rs | ||
| va_arg.rs | ||
| value.rs | ||