1ae4a0cc34
Migrate the standard library from using the external `cfg_if` crate to
using the now-built-in `cfg_select` macro.
This does not yet eliminate the dependency from
`library/std/Cargo.toml`, because while the standard library itself no
longer uses `cfg_if`, it also incorporates the `backtrace` crate, which
does.
Migration assisted by the following vim command (after selecting the
full `cfg_if!` invocation):
```
'<,'>s/\(cfg_if::\)\?cfg_if/cfg_select/ | '<,'>s/^\( *\)} else {/\1}\r\1_ => {/c | '<,'>s/^\( *\)} else if #\[cfg(\(.*\))\] /\1}\r\1\2 => /e | '<,'>s/if #\[cfg(\(.*\))\] {/\1 => {/e
```
This is imperfect, but substantially accelerated the process. This
prompts for confirmation on the `} else {` since that can also appear
inside one of the arms. This also requires manual intervention to handle
any multi-line conditions.
84 lines
2.3 KiB
Rust
84 lines
2.3 KiB
Rust
#![allow(dead_code)]
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// Export the macros for all supported architectures.
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#[macro_use]
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mod x86;
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#[macro_use]
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mod arm;
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#[macro_use]
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mod aarch64;
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#[macro_use]
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mod riscv;
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#[macro_use]
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mod powerpc;
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#[macro_use]
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mod powerpc64;
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#[macro_use]
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mod mips;
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#[macro_use]
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mod mips64;
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#[macro_use]
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mod loongarch;
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#[macro_use]
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mod s390x;
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cfg_select! {
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any(target_arch = "x86", target_arch = "x86_64") => {
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#[stable(feature = "simd_x86", since = "1.27.0")]
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pub use x86::*;
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}
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target_arch = "arm" => {
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#[unstable(feature = "stdarch_arm_feature_detection", issue = "111190")]
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pub use arm::*;
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}
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any(target_arch = "aarch64", target_arch = "arm64ec") => {
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#[stable(feature = "simd_aarch64", since = "1.60.0")]
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pub use aarch64::*;
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}
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any(target_arch = "riscv32", target_arch = "riscv64") => {
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#[unstable(feature = "stdarch_riscv_feature_detection", issue = "111192")]
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pub use riscv::*;
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}
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target_arch = "powerpc" => {
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#[unstable(feature = "stdarch_powerpc_feature_detection", issue = "111191")]
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pub use powerpc::*;
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}
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target_arch = "powerpc64" => {
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#[unstable(feature = "stdarch_powerpc_feature_detection", issue = "111191")]
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pub use powerpc64::*;
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}
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target_arch = "mips" => {
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#[unstable(feature = "stdarch_mips_feature_detection", issue = "111188")]
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pub use mips::*;
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}
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target_arch = "mips64" => {
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#[unstable(feature = "stdarch_mips_feature_detection", issue = "111188")]
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pub use mips64::*;
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}
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any(target_arch = "loongarch32", target_arch = "loongarch64") => {
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#[stable(feature = "stdarch_loongarch_feature", since = "1.89.0")]
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pub use loongarch::*;
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}
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target_arch = "s390x" => {
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#[unstable(feature = "stdarch_s390x_feature_detection", issue = "135413")]
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pub use s390x::*;
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}
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_ => {
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// Unimplemented architecture:
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#[doc(hidden)]
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pub(crate) enum Feature {
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Null
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}
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#[doc(hidden)]
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#[unstable(feature = "stdarch_internal", issue = "none")]
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pub mod __is_feature_detected {}
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impl Feature {
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#[doc(hidden)]
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pub(crate) fn from_str(_s: &str) -> Result<Feature, ()> { Err(()) }
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#[doc(hidden)]
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pub(crate) fn to_str(self) -> &'static str { "" }
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}
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}
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}
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