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Rollup merge of #79090 - hermitcore:builtins, r=Mark-Simulacrum

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libary: Forward compiler-builtins "asm"  and "mangled-names" feature

In principle this is a followup of rust-lang/rust#78472. In the previous PR was the support of the test crate missing.

Now users will be able to do:
```
cargo build -Zbuild-std=core -Zbuild-std-features=compiler-builtins-asm
```
and correctly get the assembly implemenations for `memcpy` and friends.
This commit is contained in:
Dylan DPC 2020-11-19 16:26:23 +01:00 • committed by GitHub
commit 29c8e50a10
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library/test/Cargo.toml
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@ -26,6 +26,8 @@ default = ["std_detect_file_io", "std_detect_dlsym_getauxval", "panic-unwind"]
backtrace = ["std/backtrace"]
compiler-builtins-c = ["std/compiler-builtins-c"]
compiler-builtins-mem = ["std/compiler-builtins-mem"]
compiler-builtins-asm = ["std/compiler-builtins-asm"]
compiler-builtins-mangled-names = ["std/compiler-builtins-mangled-names"]
llvm-libunwind = ["std/llvm-libunwind"]
system-llvm-libunwind = ["std/system-llvm-libunwind"]
panic-unwind = ["std/panic_unwind"]